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Questionnaire It is between liquid and plastic states and it is defined as the lowest water content at which the mass has the capacity to flow as a liquid It is between the plastic and semisolid states and is defined as the lowest water content at which the mass can be readily molded without crumbling This is between the semisolid and solid states and is defined as the highest water content at which the mass attains its minimum volume but it continues to lose weight This is the difference between the liquid and Plastic Limit This is the difference between plastic and shrinkage limit Weight of soil sample needed for liquid limit determination Weight of soil sample needed for Plastic limit determination Weight of soil sample needed for Shrinkage Limit determination It is the ratio of the weight of water in the soil to the weight of the dry soil after it has been dried to constant weight at a temperature of 105 to 1100C. It is defined as the ratio of the weight in air of a given volume of a material to the weight in air of an equal volume of a standard material at a stated temperature It is the determination of particle size distribution in soil by sieve, hydrometer, or a combined analysis. Three major groups of soil If the individual particles are visible to the unaided eye, the soil considered to be The two principal soil types that comprise the coarse grained soil. If its individual particles are not visible to the unaided eye The two principal soil types that comprises this group This type contain an appreciable amount of decayed animal and/or plant matter. The limiting diameter of gravel is The limiting diameter of sand is Rock fragments w/c are coarser than the upper limiting size for gravel are Limiting size for silt Limiting size for clay Those smaller than 0.001 are called The drying time of 225 grams sandy materials The drying time of a plastic, fine grained soil of the same weight is It shall have an even number of equal width chutes but not less than a total of eight for coarse aggregate, or twelve for F.A. w/c discharge alternately to each side It is widely used in the classification and identification of soils. It is an important criteria in the classification of highway subgrade materials. It is also related to permeability and capillarity of cohesionless soil. The size of the portion passing 2mm(#10) or 0.425mm(#40) sieve shall be tested for These indicates compressibility and related to permeability High PI means high degree of compressibility of soil The higher PI, the lower permeability It is performed if the soil is granular, if considerable portion is retained on the No. 200 sieve (0.074mm) If the soil is fine-grained or nearly, all its particles are finer than the No.200 sieve. For efficient compaction, the embankment materials should at the time of rolling be at For a road base coarse, the most preferable materials is one with CBR value of Peat and Muck are
Correct answer liquid limit
plastic limit
shrinkage limit plasticity index shrinkage index 100 grams 15 grams 30 grams moisture content
specific gravity mechanical analysis coarse grained, fined grained, organic coarse grained gravel and sand fine grained soil clay and silt organic soil 3" to 10" or 75mm to 2mm 2mm to 0.074mm boulders 0.074mm to 0.005 0.005mm to 0.001mm colloids 2 hours 4 hours sample splitter
plasticity index 1 1 sieve analysis hydrometer analysis optimum moisture content 0.8 unsuitable soils
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62
63 64 65 66 67 68 69 70 71 72 73 74 75
The plasticity index of aggregate base coarses (item 201) should be not greater than The natural water content of highly organic soil is The most commonly used method of soil exporation The lowest moisture content at which the soil will flow upon the application of a very small shearing force. The minimum moisture content at which the soil remains in a plastic state This is very important to achieve maximum contact between particles and maximum water tightness of base materials. In general, soils with high value of this and PI are poor as engineering materials Gives indication of clay content in soil Use to evaluate the potential strength of soil/aggregate. The purpose of this trial is to check the suitability of the materials and the eficiency of the equipment and construction method which is proposed to be used. The behavior of soil is markedly influence by the amount of It is defined as the weight/mass per unit volume. This is widely used as a control test in embankment construction to ensure adequate compaction It involves the application of energy and addition of water as lubricant It is express as the moisture content corresponding to 25 blows It increases shearing strength of aggregate of any size, shape/gradation. This is the amount of moisture that allow the compacting force to overcome the frictional resistance and the maximum density of soil mass is attained Height of fall of 25kg rammer Height of fall of 4.54 kg rammer Moisture content of air dried soil Moisture content of undisturbed soil The value of this is use in the design and control of concrete moisture This determines the fineness of cement w/c affects the strength of cement This determines the amount of water required to prepare hydraulic cement paste for testing The purpose of this test is to established whether a cement complies w/ a specification limit on setting time This test provides an index of potential delayed expansion caused by the hydration of Calcium oxide (CaO) or Magnesium Oxide (MgO) or both This test determines whether or not the hydrauic cement under test meets the air entraining or non-air entraining requirement of the specs This is used to determine the compressive strength of hydraulic cement that wil be used This determines the freshness of cement and the amount of moisture present in the cement This determines the inert materials (acid insoluble material) present in the cement This determines the amount of gypsum added to the cement to regulate its setting This determines the soundness of cement Natural Pozzolan Cement Artificial pozzolan cement Diameter of sphere used in abrasion test Weight of cast iron spheres Weight of Steel Spheres Defined as the product obtained by burning to incipient fusion a properly proportioned mixture of argilaceous and calcareous materials. This is burnt product w/c is used w/ Gypsum and pulverized to form Portland cement
6 more than 100% core boring liquid limit plastic limit
This react or combined w/ water, one that will harden underwater. This is the heat produced by the chemical reaction between 77 cement and water This is the process in which the cement reacts or combined 78 chemically w/ water Those materials w/c contributes silica (SIO2) 76
79 Alumina (Al203) and Iron Oxide (Fe2O3) to clinker, it
80 81 82 83 84 85
86 87 88 89 90 91 92 93 94
includes clay, shale or sand, etc. Those materilas w/c contributes lime (CaO) and Magnesia (MgO) to the clinker, it includes limestone chalk, marls, marine oyster shells, ec. These type of cement is used for General Construction These is used where sulfate concentration in ground waters are higher than normal but not severe, generate heat at a slower rate than normal. This type develops approximately 190% of the strength of Type 1 at 3 days & 90 to 130% at 28 days This is a special cement for use where the amount and rate of heat generated must be minimized A special cement intended to be used in structure to prevent damage from severe sulfate action of soils or high alkali content of H2O In sub-base & base coarse, this material shall be free from hard lump and shall not contain more than 15% of material retained on the No. 4 sieve. Concrete deposited in water. The consistency of the concrete mixture should be checked frequently by this test Slump of Concrete deposited in water The minimum cement content of concrete deposited in water (kg/m3 of concrete) The maximum distance of the discharge line from the point of deposit by pneumatic means The maximum time needed for consolidation/compaction of structure/concrete. Using internal vibrator The space interval of inserting vibrator that should be withdrawn vertically to penetrate underlying lift for homogeneity between lifts. Minimum time needed for the removal of forms for beams, girders, frames, or arches.
95 Minimum bar lapping for tension
96 Minimum bar lapping distance for compression 97 Minimum separation of splices when staggered Consist of furnishing, placing and finishing concrete in all 98 structures except pavement conforming to the lines, grade and dimensions. 99 Minimum grouting pressure for bonding tensions. The mixing time when concrete were mixed in a central 100 mixing plant. Occurs on PCCP when the cutting of weakened plane is 101 delayed When concrete pile cast in place formed by first removing 102 the soil by drilling and filling the void by concrete. 103 Maximum length of tremie pipe and its diameter. 104 Length of tremie pipe that must be submerge into concrete. 105 What is the density of Bentonite to 1 cu.m. of water Reinforcement that consist of spiral bars coiled outside the 106 main longitudinal reinforcements. 107 The usual size of stiffening rings The minimum spacing of steel bars on bored piles to ensure 108
108 that concrete would still flow outwards to the walls of the bored piles. 109 Must be w/ in the limit of "water cement ratio" for concrete 110 Required revolution of concrete mixer 111 The minimum number of revolutions for each concrete mix. 112 The minimum interval of concrete pouring to avoid cold joint Consists of all work elements carried out by the manager or 113 by those in his organization w/c contribute to the quality of the output of some other organization. Refers to the process of making tests to determine the 114 degree of compliance of delivered or constructed materials w/ the specification The main objective of this design is to determine the proportion of the ingredients that will produce concrete of 115 the proper workability when fresh and the desired durability and strength after it has hardened. These are prescribed in each project based on the estimated 116 quantities, it specify the kind and number of tests for each work items. This is prepared by the DPWH for the contractor to comply 117 to facilitate quality control. This should be done during the first seven days in order that the expected development of strength will be obtained 118 and the occurrence of plastic cracks will be prevented or minimized This is preferable than a good PCCP road due to its lower 119 initial cost and more uniform riding surface. The proportioning of aggregate and asphalt should be based 120 on this This formula should be set and strictly followed in all batches of the asphalt mixes, it should include provisions 121 on grading of aggregates percentage of asphalt and temp. of mixture at time of compaction. Use in measuring the thickness or height determination of 122 compacted bituminous paving mixture to the nearest 0.10 cm Used to determine the grading of aggregates extracted from 123 bituminous mixtures. 124 A test to determine the moisture content of soil. The amount of lime to be added in item 203 (lime Stabilized 125 Road Mix Base Coarse) The amount of cement to be added in item 204 (Portland 126 cement Stabilized Road Mix Base Coarse) For Item 505 (Stone Masonry) No. of bags of cement & 127 Fine aggregate / cu.m. It is a colloidal dispersion of asphalt in water whose color is 128 chocolate-brown before use and turns black when the emulsion is broken. What process determines the asphalt content in asphalt 129 mixes Minimum temperature of Bituminous Concrete when place, 130 measured in the truck prior to dumping. Minimum temperature of tar when it is used in Bituminous 131 Concrete 132 The bituminous material commonly used in 310 This item consist of preparing and treating an aggregate 133 base coarse preparatory to the const. of the Bituminous Surface Coarse. This item consists of preparing and treating an existing 134 bituminous or cement concrete pavement with bituminous materials Consist of an application of bituminous materials w/ or w/o 135 an application of aggregate on an existing bituminous surface coarse. Consist of either a single application of bituminous material followed by a single spreading of aggregate or two application of bituminous materials each followed by a single 136 spreading of aggregate or two application of bituminous
136
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177
materials each followed by spreading of aggregates (Double Surface Treatment). What determines the index of retained strength of the asphalt mix. It is the ratio of wet to dry stability of the mix (compressive strength). This measures the resistance to flow of asphalt. Measures the distance that standard needle will penetrate a sample at a given temperature in a specified time. Measures the ability of asphalt to stretch w/o breaking It determines the rate of loss of volatile oil of asphalt when heated and the change in penetration caused by excessive heating Indicates the uniformity of product Indicates the safe heating temperature of asphalt Determines if asphalt is overheated during production Determines the bitumen content in asphalt that is soluble in petroleum solvent. Determines the asphalt content of liquid asphalt. Determines the presence of larger globules of asphalt in the emulsion. Determines the resistance of the emulsion to breakdown on the job. Detects the tendency of the asphalt globules in the emulsion to settle during storage It is the basic cementing material, the main constituent of all oher asphalt types also known as hot asphalt Mixture of asphalt cement, water & emulsifier usually 60% asphalt & 40% water. Blends of asphalt cement and petroleum solution Asphalt cement with non volatile or slow volatile oils or road oil. Asphalt cement w/ kerosene Asphalt cement w/ gasoline Used as joint and crackfiller and for water proofing Gives color and hardness Composed of resin w/c provides stickness (adhesiveness) and oil w/c influence viscosity of asphalt and in part softness Portland-Pozzolan cement for use in general/concrete construction. Portland-Pozzolan Cement for use in concrete const. where high strength at early ages are not required. Is the solid portion of paint, the finely divided solid particles used in paint. Are inert materials w/c are added to the paint to increase the volume w/o increasing in the cost. Intended for use on concrete or other masonry surface A paint made from emulsions of polymer in water as binder with suitable pigment w/c is substantially free from gloss Intended for used on wood surface, a special type of paint made w/ varnish as the vehicle. For interior use, a paint made from alkyd resin as binder with suitable pigment . For exterior use, made from alkyd resin as a binder w/ suitable pigment w/c has sheen, shine or luster. A bright orange-red tetroxide, used as primary constituents of anti-corrosive primers for iron or steel. A pigment mainly of ferric oxide. This kind of paint is primarily intended for use on steel structure. For zone marking, traffic lanes, should possess improve visibility at night. This is the liquid portion of the paint. Placing of rip-rap must be Placing of stone masonry must be Minimum spacing of weep-holes and their diameter A core specimen for thickness determination shall have a
177 178 179 180 181 182 183 184 185 186 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
diameter of Minimum required temp. for asphalt compaction Minimum thickness for asphalt overlay Minimum dry stability compressive strength for item 310 Minimum asphalt content for item 310 Different test conducted in the field are Thickness tolerance is Surface tolerance for compaction of item 310 In casting reinforced concrete railings, the concrete used is The required maximum dry density obtained by Lab test, and degree of compaction required for aggregate sub-base should at least. The specified Flexural strength for paving concrete using midpoint loading is Per our present specs for hghways & bridges including ammendments, it is mandatory to open PCCP to traffic not later than The slump test on concrete is a measure of The fineness modulus is highest for If concrete is continously moist cured, it will gain strength beyond 180 days. The quality of paving concrete is usually measured by its Generally speaking, batching of concrete aggregate by vol. is preferable than weight If angular coarse aggregate is used in a concrete mix, it will require more The most favorable period for curing concrete is Lower water cement ratio in concrete mixes improves When concrete must be placed in a sloping surface, placing should start at the The maximum % abrasion loss allowed for concrete coarse aggregate is In casting of reinforced concrete piles, the concrete used is What is the dead load equivalent of loose sand, earth & gravel fill What is the rate of application for curing compound During coring of completed pavemen, how many cores/km/ lane are required as per specs? What is the right proportion for stone masonry (mortar) The most commonly used method of soil exporation is The flow curved obtained when liquid limit test results are plotted on a semi-log scale is in the form of What is the effect of increasing th compaction effort in compacting soil The allowable smooth riding quality for PCCp is
209 Test requirement for on-going asphalt pavement. 210 211 212 213 214 215
216 217 218 219
Minimum test requirement for completed Bituminous Pavement Required thickness for compaction is Mass % of air void of item 310 Mineral filler passing no. 200 sieve used in item 310 should have a plasticity index of Rolling of item 310 must begin from An excavation and utilization of approved material sources required for the construction of embankment, or for other portion of the work as shown on the plans or on the special provision On item 102, rock shall be excavated below sub-grade w/in the limit of the road bed to a depth of Test requirement for selected borrow (topping) What is the rolling distance extended outside the base coarse and surface coarse on pavement A concrete where compression is induced before application of working loads so that tension under these working load is reduced
220
The system of pre-stressing wherein the steel tendons are tensioned before pacing concrete Do you want to show the rating, Y/N? y Do you want to show the correct answer, Y/N? y score Percentage
pre-tensioning
38 17.27%
Correct answer Liquid Limit
Plastic Limit
Shrinkage Limit Plasticity Index Shrinkage Index 100 grams 15 grams 30 grams Moisture Content Water Content Specific Gravity Grain size Mecnaical Analysis Coarse grained, Fine Grained, Organic Coarse grained Gravel and sand Fine grained soil Clay and silt Organic Soil 3" to 10" or 75mm to 2mm 2mm to 0.074mm Boulders 0.074mm to 0.005mm 0.005mm to 0.001mm colloids 2 hours 4 hours Sample Splitter
Plasticity Index 1 1 Sieve Analysis Hydrometer analysis Optimum moisture content 0.8 Unsuitable soils
6 more than 100% core boring Liquid limit Plastic limit Gradation Liquid Limit of Fines Plasticity Index CBR Trial section Moisture Content Density Field density Test Compaction of soil Liquid Limit Compaction Optimum Moisture Content 12 inches or 305mm 18 inches or 457 mm Hygroscopic Moisture content Natural Moisture content Specific Gravity of cement Fineness of cement test Normal consistency test of cement Time of setting by Gilmore Needle Soundness test by Patoclave expansion
Air Content Test Mortar Strength Loss on Ignition Insoluble Residue test Sulfur Trioxide Test Magnesium oxide test Volcanic Ash Fly ash 46.8 mm 390 grams 455 grams Portland Cement Clinker
Hydraulic cement Heat of Hydration Hydration
Argillaceous Raw Materials
Calcareous raw Materials Normal Cement or Type 1 Moderate Sulfate resistant or type II High Early Strength or Type III Low Heat of Hydration or Type 4 Sulfate resistant or Type V
Filler material Seal Concrete Slump test 10-20cm 400 3 meters 15 seconds 50 - 60cm 14days or 80% of design strength 24bars for grade 40 (404)
20 bars for grade 40 40 bars structural concrete 0.6894 Mpa or 100psi 50 - 90 seconds shrinkage cracking Bored Pile 2.5 meters and 20 cm diameter 2- 6 m w/ bentonite 30 - 100 kg/cu.m. Transverse reinforcements 2.5 mm 100 mm
100 mm 0.50 - 0.60 4 - 6 rpm 100 revolutions 30 minutes Quality Assurance Work
Materials Testing
Design of the Concrete Mixture
Minimum testing requirements Quality Control Program
Curing of concrete
Asphalt road Laboratory Trial Mixes
Job Mix Formula
Caliper Meachanical Analysis of Extracted Aggregates Calcium Carbide Gas Pressure 3 - 12 mass % of dry soil aggregate 6 - 10 mass % of dry soil aggregate 2 bags/cu.m. 0.17cu.m./cu.m Emulsified Asphalt Extraction 1070 C 66 to 1070 C asphalt cement Bituminous Prime Coat
Bituminous Tack Coat
Bituminous seal Coat
Bituminous Surface Treatment
Bituminous Surface Treatment
Immersion Compression Test Index of retained strength Viscosity Test Penetration Test Ductility test Loss on Heating Test Specific Gravity Flash Point Spot test Solubility Test Distillation Test Sieve Test Cement Mixing Test Storage Stability Test Asphalt cement Emulsified Asphalt Cutback asphalt slow curing medium curing Rapid Curing Blown or oxidized asphalt Asphaltene Maltene Type IP Type P Pigments Extenders Latex Paint Flat Latex Paint Enamel Paint Flat wall enamel Gloss/semi gloss enamel Red lead Red Oxide Aluminum Paint Reflectorized traffic paint Vehicle perpendicular to the slope parallel to the slope 2 meters on center & 2'' dia. 4"
4" 1070 C Tolerance +- 100 C 1 inch or 25 mm 1.4 Mpa or 200 psi 5 to 8% FDT, Slump, T-core, SPT & Test Pit + 5 mm & - 25 mm not to exceed 6 mm Class C-1 1 650 psi or 4.5 Mpa 14 days after pouring consistency Coarse sand 1 Flexural strength 0 water & coarse aggregate during the first few days or week strength bottom 0.4 C2 1.603 tons/cu.m. 0.20 liter/sq.m. 55 1:2 Core boring straight line Higher density 3 mm 1 but not more than 3 samples 1 sample every 100 lin.m./lane 150 mm/layer 5 - 7% not greater than 4% the sides Borrow excavation
150 mm 201 PI > 6% & LL > 25 30 cm Pre-stressed concrete
Pre-tensioning
1.
In soil Engineering, the term soil includes a. sand and gravel c. both a and b b. mud and muck d. neither a nor b
2.
Clay can be distinguished from silt by a. dilatancy test b. plasticity test
c. either a or b d. neither a nor b
3.
The particle size distribution of a sandy gravel is determined by a. hydrometer test c. dilatancy test b. sieve test d. any of the preceding test
4.
The Atterberg Limits Tests are performed on the soil fraction passing sieve no. a. 4 c. b. 16 d.
5.
Disturbed soil samples may be used for a. sieve test b. liquid limit test
c. c.
40 200
compaction test any of the preceding test
6.
Optimum water content of a soil is determined by a. compaction test c. either a or b b. field density test d. neither a nor b
7.
An undisturbed soil sample is needed for a. consolidation test c. both a and b b. direct shear test d. neither a nor b
8.
Liquid limit is numerically a. less than plastic limit b. greater than shrikage limit
c. either a or b d. neither a nor b
9.
Moisture content of soils is generally based on a. total weight of soil c. density b. weight of solids d. degree of saturation
10.
A-7 soils have a higher Group Index than A-1 soils a. true c. it depends on gradation of soil b. 0
11.
Sandy soils have a higher plasticity index than clayey soils a. 1 c. it depends on gradation of soil b. false
12.
The best soils for a road structure would have a Group Index of a. less than 5 c. 11 to 15
b.
5 to 10
d. 16 to 20
13.
The porosity of a soil which has a void ratio of one (1) is a. 50% c. 75% b. 80% d. 25%
14.
Upon what depends the density to which any soil can be compacted a. Moisture content c. Both a and b b. Compactive energy d. Neither a nor b
15.
Which void ratio will you prefer for a soil after compaction in the road? a. 1/4 c. 3/4 b. 1/2 d. 1
16.
The degree of compaction of a rolled subgrade is determined by a. compaction test c. consolidation test b. density test d. compression test
17.
For a given compactive energy, the maximum density of a soil is obtained when its water content is a. at the optimum amount c. higher than the optimum b. lower than the optimum d. almost zero
18.
Which percent silt and clay content would you prefer for base coarse of an asphalt road? a. 5 c. 50 b. 25 d. 75
19.
The porosity of a certain soil will increase if there is an increase in the void ratio a. 1 c. it depends on the moisture content b. 0
20.
If 95% of a soil passes the No. 200 sieve, its particle size distribution is best determined by a. hydrometer test c. either a or b b. sieve test d. neither a nor b
21.
The density of a certain soil will increase if the void ratio decreases a. 1 c. b. 0
it depends on porosity
22.
A soil which is classified A-7 by the Highway Research Board Method will have a subgrade rating of a. excellent c. fair b. good c. poor
23.
Which plasticity index would you prefer for the base coarse
of a Portland Cement Concrete Pavement? a. less than 6 c. 10 to 12 b. 6 to 9 d. more than 1 24.
The standard compaction test on predominantly fine-grain soils is performed on soil fraction passing sieve no a. 200 c. 16 b. 40 d. 4
25.
The flow curve obtained when liquid limit test results are plotted on semi-log scale in the form of a. straight line c. parabola b. arc d. hyperbola
26.
The soil particles remaining in suspension one hour after sedimentation starts in hydrometer test will be predominantly a. clay c. silty sand b. silt d. sand
27.
The opening of a No. 4 sieve is bgger than the opening of a 1/4" sieve. a. 1 c. they are the same b. 0
28.
What is the effect of increasing the compactive effort in compacting a soil? a. higher density c. both a and b b. lower optimum water content d. neither a nor b
29.
Sand has a greater load carrying capacity than clay a. 1 c. it depends on water content b. 0 d. it depends on gradation
30.
The most commonly used method of soil exploration is a. core boring c. electrical resistivity b. plate bearing
31.
A fine-grained soil will decrease in volume if water content decreases while the soil is in the a. plastic state c. both of the preceding b. semi-solid state
32.
The empirical number used in design is a. plasticity index b. group index
c.
both of the preceding
33.
The degree of compaction of soil affects the CBR a. 1 c. it depends on the void ratio b. 0
34.
A soil is fully saturated at optimum moisture content
a. b.
1 0
c.
it depends on the void ratio
35.
Shrinkage limit is the minimum volume of a soil when dried a. 1 c. it depends on the porosity b. 0
36.
High cohesion makes the soil more desirable for a roadbase or subbase a. 1 c. it depends on specific gravity b. 0
37.
Sand has a faster rate of consolidation than clay a. 1 c. it depends on in-place density b. 0
38.
Fine-grained soils are preferable than coarse grained soils for a construction of highway embankments. a. 1 c. it depends on grading b. 0
39.
______________ determines the relative amount of water in the voids. a. water content c. degree of saturation b. void ratio d. porosity
40.
In soil engineering the term "soil" includes a. clay c. b. gravel c.
sand all of the preceding
41.
Water content of soils is generally based on the a. total weight of soil c. weight of solids b. total volume of soil d. unit weight
42.
A soil is fully saturated if the water content is a. at optimum content c. more than 100% b. 100% c. fills all the void spaces
43.
Which property of soil is not to be disturbed in undisturbed samples? a. structure c. moisture content b. density c. all of the preceding
44.
The particle size distribution of a soil is determine by a. liquid limit test c. sieve analysis test b. plastic limit test d. any of the preceding test
45.
_____________ soils are most suitable for the construction of highway embankments
a. b.
Granular Fine-grained
c. Plastic d. Clayey
46.
The density to which the soil can be compacted is related to a. compactive effort c. both a and b b. water content d. neither a nor b
47.
Void ratio is numerically greater than porosity a. 1 c. It depends on water content b. 0
48.
____________ is an asphalt formed by natural process of evaporation. a. Rock asphalt c. Asphalt cement b. Asphalt emulsion d. Cut-back asphalt
49.
Uncrushed aggregates are preferable than crushed aggregates for bituminous mixtures. a. 1 c. it depends on type of b. 0 bituminous materials
50.
The apparatus used in determining the consistency of liquid asphalt is the a. flowmeter c. penetrometer b. viscometer d. pycnometer
51.
___________ is preferable for bituminous prime coat a. Solid asphalt c. Blown Asphalt b. Liquid Asphalt d. Hot Asphalt
52.
___________ is the test used in determining the amount of asphalt cement in a liquid asphalt a. Distillation c. Penetration b. Extraction d. Solubility
53.
____________ emulsion are usually tested for extraction a. Asphalt cement c. Asphalt mixes b. Cut-back cement d. Asphalt emulsion
54.
Extraction test is the procedure used for separating a. the asphalt from water in emulsified asphalt b. asphalt from mineral aggregates c. asphalt from gasoline solvent d. asphalt from kerosene solvent
55.
___________ indicates the safe working temperature of the asphalt a. Distillation c. Flashing point b. Viscosity d. Softening point
56.
The optimum asphalt content obtained in a Marshall Stabiity Test is the average of the asphalt content of the Maximum Stability, Maximum density and a. Maximum Flow c. 4% Air Voids b. Maximum Air Voids d. 4% Flow
57.
___________ are intergranuarvoid spaces between aggregate particles. a. VMA c. Permeable Voids b. Air Voids
58.
The main difference between a bulk measured specific gravity of a bituminous mixtures and its maximum measured specified gravity is the a. weight of the voids b. weight of the asphalt c. volume of the voids d. volume of the aggregates
59.
____________ is the best type of asphalt to be used for hot mixes a. Asphalt cement c. Rapid Curing Cut-back b. Emusified Asphalt d. Medium curing Cut-back
60.
The field density of a bituminous pavement shall not be less than ______ of the specific density of the laboratory compacted specimen. a. 92% c. 98% b. 95%
61.
A bitumionus coating applied in an existing road prior to laying of a bituminous surface overlay is a. prime coat c. seal coat b. tack coat
62.
The distance travelled by a standard penetration needle on a prepared sample of asphalt cement under conditions for normal penetration is 8.6mm. The material penetration is __________ penetration grade. a. 40-50 c. 120-150 b. 85-100 d. 200-300
63.
The maximum specific gravity of an asphalt mix containing 6% asphalt by weight of mix is 2.5. If the specific gravity of the asphalt 1.01, the specific gravity of the aggregate is equal to a. 2.65 c. 2.76 b. 2.56 d. 2.70
64.
A job-mix Formula provides for close control of a. asphalt content c. both of them b. aggregate gradation d. neither of htem
65.
The desired property of fresh concrete is a. strength c. workability b. durability d. water tightened
66.
The sieve used in the separation of aggregate after the abrasion test is a. 0.425mm (No. 40) c. 1.70 mm (No. 12) b. 4.75mm (No. 4) d. 0.075 mm (No. 200)
67.
Normally, concrete mix with _______ water cement ratio will develop the lowest strength. a. 0.75 c. 0.50 b. 0.35 d. 0.45
68.
The most important single factor which affects the quality of concrete is a. cement content c. water-cement ratio b. aggregate gradation d. aggregate quality
69.
Paving concrete will need less _________ than that of structure concrete. a. sand c. coarse aggregate b. water c. both a and b
70.
Concrete specimen molded in a 6" x 6" x 21" beam mold should be rodded _______ times per layer. a. 60 c. 62 b. 61 c. 63
71.
Quality determination of concrete coarse aggregate sample requires. a. abrasion test c. stability b. sieve analysis c. both a and b
72.
Concrete mix should be in place __________ after the cement is added into the aggregate and water. a. 100 min c. 15 min b. 120 min c. 90 min
73.
Concrete beam specimens for paving concrete are molded in a. 2 equal layers c. 4 equal layers b. 3 equal layers d. 4 equla layers
74.
A minimum cement factor of ______ bags per cubic meter of concrete is required for paving concrete. (based on 94 Ib bag of cement) a. 7.5 c. 9.5 b. 8.5 d. 10
75.
The volume of the ______ can be calculted by performing the unit weight test on the fresh concrete. a. concrete c. air b. cement c. all of the preceding
76.
The use of manufactured fine aggregate will generally require more a. mixing water c. coarse aggregate b. fine aggregate d. both a and b
77.
The a. b. c.
78.
The coarser the fine aggregate, the higher the fineness modulus a. yes c. depends on the grading test b. no
79.
The more the concrete is exposed, the greater the range of movement. a. 1 c. it depends on the type b. 0 of cement
80.
The samples of reinforcing steel bar to be submitted for a test should be at least. a. 20 cm c. 100 cm b. 40 cm
81.
For efficient compaction, the embankment material should at the time of rolling be a. dry c. at optimum moisture b. wet content
82.
__________ of 12.5mm diameter steel bar for concrete reinforcement is the maximum quantity that a sample can represent. a. 15000 kg c. 5000 kg b. 10000 kg
83.
Per our present Specifications for Highway and Bridges, including amendments, it is mandatory to open portland
two major components of concrete are paste and mineral aggregates cement and water water and coarse aggregates
cement concrete pavements to traffic not later than a. 7 days after pouring c. 21 days after pouring b. 14 days after pouring d. 28 days after pouring 84.
For 850 cu.m. of concrete paved in one day, _______ sets of concrete beam samples should be taken and tested for strength (thickness of pavement is 0.23m) a. 3 c. 12 b. 2
85.
For 8050 cu.m. concrete coarse aggregate, _______ samples should be submitted for quality test. a. 6 c. 3 b. 5 d. 4
86.
The coarse aggregate of item 201, Aggregate Base Coarse shall have a percentage of wear not more than _______ as determined by Los Angeles Battled Test. a. 40% c. 50% b. 45% d. 60%
87.
The rate of application of Bituminous Material used as Bituminous Prime coat is _______ per square meter. a. 0.5 to 1.0 L c. 1.0 to 2.0 L b. 1.0 to 1.5 L
88.
Steel bars for concrete reinforcement is tested for its _________ properties. a. tensile c. bending b. compression c. both a and c
89.
For 250 gallons of Red Lead Paint ______ samples should be submitted for quality tests. a. 1 c. b. 2
3
90.
The number samples of structural steel (reduce section) required for 30,000 kgs is a. 1 c. 3 b. 2
91.
_________ is the method used in determining the strength of concrete pipes. a. Fold-point loading c. Three Edge Bearing b. Midspan Loading
92.
An aggregate base coarse of 23,750cu.m. require ________ quality test. a. 80 c. 20
b.
50
c.
16
93.
The plasticity index of aggregate base coarse should be not greater than a. 12 c. 10 b. 6 d. 8
94.
Concrete hollow blocks are tested for its a. compression c. b. absorption and dimension c.
tensile both a and b
95.
Item 306 is called a. Bituminous Surface Treatment b. Bituminous Road Mix Surface Coarse c. Bituminous Plant Mix (Stockpile Maintenance Mixtures) d. Bituminous Penetration Macadam Pavement
96.
In the preparation of asphalt design mix intended for item 310, the proportion of Bituminous material (asphalt cement) on the basis of total dry aggregates shall be from a. 4 to 8% c. 5 to 7% b. 3 to 5% c. 5 to 8%
97.
Item ______ includes general requirements that are applicable to all types of Bituminous Plant Mix surface coarses irrespectives of gradation of aggregates of kind and amount of bituminous material. a. 306 c. 308 b. 307 d. 310
98.
________ is the resut of asphalt layer instability of granular base or subgrade weakness. The pavement usually twist out of shape. a. Disintegration c. Distortion b. Upheaval d. Bleeding
99.
__________ the localized upward displacement of a pavement due to swelling of the subgrade or some portion of the pavement structures. a. Upheaval c. Ravelling b. Edge cracking d. Depression
100. Item ______ consists of furnishing and placing one or more coarses of graded aggregates and one or more application of bituminous material followed by a seal coat with cover aggregates constructed in a prepared base is a. 303 c. 305 b. 304 d. 306
101. All asphalt cement submitted in the laboratory for quality test should always have a corresponding a. Job Mix Formula c. Sample Card b. Test Report d. Minimum Testing requirement 102. The compressibility of a fine grained soil is a. High c. b. Low
It depends upon the grain size
103. The highest moisture content in the plastic cconsistency of fine grained soil is the a. Liquid Limit c. Shrinkage Limit b. Plastic Limit 104. Compaction increases the strength of a soil by a. Expelling air from its voids b. Forcing soil particles into more intimate contact c. Both a and b 105. _________ indicates a range of moisture content over which a soil is plastic a. Plastic Limit c. Plasticity Index b. Shrinkage Limit 106. Water content of an undisturbed soil is called a. Optimum Moisture Content c. Natural Water Content b. Hygroscopic Moisture Content 107. In the performance of Moisture Density Relations Test, the equipment used is a. Liquid Limit Device c. Rammer and Mold b. Sand Core Apparatus d. None of the Above 108. Peat and Muck are a. Fair subgrade soils b. Stable soils
c. Unstable soils d. Good subgrade soils
109. To prevent intrusion of soft subgrade material into the aggregate base or subbase ______ maybe used. a. Reinforced Earth c. Gabions b. Rock Buttress d. Geo Textile 110. The CBR value is generally selected at _________ penetration a. 0.10 c. b. 0.0375 d.
0.05 0.20
111. _______ is one of the method in improving the properties of a soil to make it suitable for a particular purpose.
a. b.
Particle rearrangement Sodding or sprigging
c. Paving d. None of the preceding
112. A sample of saturated clay has a mass of 102.8 grams. After oven drying, the same soil weighs 73.4 grams. If the specific gravity is 2.74, its wet density g/ml is. a. 1.829 c. 1.827 b. 1.825 d. 1.830 113. The dry density, g/ml is. a. 1.310 b. 1.306
c. d.
1.300 1.309
114. For item 311 PCC Pavement, Coarse Aggregates shall have a mass percent of wear not exceeding ______ when tested by AASHTO T-96. a. 50% c. 35% b. 40% d. 60% 115. Plasticity index for aggregate surface coarse is a. Not greater than 6 c. b. Not greater than 25 d.
4 to 9 12
116. At least one (1) set of 3 concrete cylinder sample shall be taken from ______ cubic meter a. 60 c. 100 b. 75 d. 150 117. Fine aggregates used in concrete pavement shall contain not more than ______ percent of material passing the 0.075mm sieve by washing. a. 1 c. 3 b. 1.5 d. 4 118. The degree of compaction required for embankment is at least _____ percent of the maximum density as determined by AASHTO 99 Method C. a. 100 c. 95 b. 90 d. 85 119. Requirement of Portland Cement Concrete Pavement Construction a. opening to traffic after 14 days the concrete was placed b. opening to traffic after 28 days the concrete was placed c. a comressive strength of 3500 psivor more d. none of the above
120. Roadway embankment in earth material shall be placed and compacted in horizontal layers not exceeding _____ loose measurement, before the next layer is placed. a. 150 mm c. 100 mm b. 200 mm d. 250 mm 121. Steel bars for concrete reinforced is tested for its a. tensile c. yield b. cmpressive c. both a and c 122. To give Bituminous Concrete Surface Course greater resistance to water _____ hydrated lime should be added. a. 2 - 3% c. 1/2 - 1% b. 1-1/2 - 2% d. 4 - 5% 123. In Aggregate Subbase Coarse, the degree of compaction of each layer shall continue until a field density of at least _____ percent of the maximum dry density determined in according with the AASHTO T-180, Method. a. 100 c. 90 b. 95 124. The maximum percentage wear allowed for Aggregate Subbase Course in a coarse portion retained on a 2mm (No. 10) sieve is _______ percent by Los Angeles Abasion Test determined by AASHTO T-96. a. 45 c. 40 b. 50 d. 55 125. In manufacture culvert pipes, the Class of concrete used is a. Class "C" c. Class "A" b. Class "B" d. Class "P" 126. For Bituminous Concrete Surface Course, if Asphalt Cement is used, the percentage based on the weight of Aggregate should be a. 3 - 5 % c. 6 - 10 % b. 5 - 8 % d. 4.5 - 9% 127. Coarse Aggregate for Crushed stone, Aggregate Surface Course should have a mass percent of not less than _____ of the particles retained on the 4.75mm (No. 4) sieve and shall have at least one (1) fractured face. a. 30% c. 60% b. 45% c. 50%
128. Before placing the asphalt pavement the gravel base coarse should be a. seal coated c. prime coated b. tack coated 129. Prestressed concrete structures used concrete of class a. A c. b. B c. 130. In concrete base course of 22,500 cu.m. will require _____ quality test. a. 15 c. b. 72
C P
40
131. An embankment to be constructed to a height of 500 mm will have a minimum number of _____ layers. a. 4 c. 3 b. 5 d. 6 132. ______ pipes should be taken as sample to represent 225 reinforced concrete pipes. a. 4 c. b. 5 133. Aggregate base coarse with a volume of 83,000 will have a minimum number of ______ tests. a. 75 c. b. 56 d.
6
40 47
134. Soils are natural Aggregates of mineral connected by strong & permanent cohesive forces. a. 1 c. none of the above b. 0 135. The boundary between sand and gravel is _____ sieve. a. 0.425mm (No. 40) c. 2.00mm (No. 10) b. 4.75 mm (No. 4) d. 0.075 mm (No. 200) 136. A ______ is a soil which exhibits the properties of a clay but contains an appreciable amount of sand. a. sandy clay c. sand clay b. clayey sand d. none of the preceding 137. Plasticity test is done on soils passing _______ sieve. a. 0.425 mm (No. 40) c. 0.075 mm (No. 200) b. 2.0 mm (No. 10)
138. ______ is the process whereby soil particles are contained more closely together through a reduction in the air voids, generally by mechanical means. a. Soil compaction c. In place Unit weight b. Mechanical Analysis d. CBR 139. Soils containing more than 35% passing 0.075mm (No.200) sieve are classified under a. silt-clay materials c. it depends on the b. granular materials plasticity index 140. _________ is provided for the purpose of cunteracting moisture movement within the structure either ny seepage or capillary action. a. Surface drainage c. Compaction b. Chemical admixtures c. Subsoil drainage 141. A subgrade soil with a CBR value of _____ will require a thicker layer of subbase and base degree. a. 5% c. 30% b. 15% c. 3% 142. ________ is one of the methods of stabilizing inferior soils. a. Particle arrangement c. Paving b. Sodding or sprigging d. Flattening 143. The physical and engineering properties of soils may be improved by a. compaction c. both a and b b. stabilization d. neither a nor b 144. Water content of soils is generally based on the a. total weight of soil c. weight of solids b. total volume of soil d. none of the preceding 145. The density to which a soil can be compacted is related to a. compactive efforts c. both a and b b. water content d. none of the preceding 146. Disturbed samples may be used for a. sieve test b. liquid limit
c. c.
compaction test any of the preceding
147. A soil with a Group Index of 5 is stronger than another with a Group Index of 10. a. 1 c. it depends on the water
b.
0
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content y
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147
