Ready Mixed Concrete Quality control management
SUNGSHIN CEMENT CO, LTD.
Index
I.
Overview of Sungshin Cement
II. II.
Facil acilit itie iess of Hano Hanoii fac factor tory
III. III. Facto actorry Lab Lab.. Facil acilit ity y IV. IV. Qu Qual alit ity y Cont Contrrol Syst System em (Mat (Mater eria ial) l) V.
Quali ality Control Sys System (Proce ocess)
VI. VI. Atta Attach ched ed info inform rmat atio ion n
Index
I.
Overview of Sungshin Cement
II. II.
Facil acilit itie iess of Hano Hanoii fac factor tory
III. III. Facto actorry Lab Lab.. Facil acilit ity y IV. IV. Qu Qual alit ity y Cont Contrrol Syst System em (Mat (Mater eria ial) l) V.
Quali ality Control Sys System (Proce ocess)
VI. VI. Atta Attach ched ed info inform rmat atio ion n
. OVERVIEW OF SUNGSHIN CEMENT CO, LTD
• Company Out Line • Strength of Sungshin • Sungshin Korea • SungShin Vietnam - Facil Facilit ity y - Organi Organizat zation ion - Factor Factory y Outlook Outlook
-1. COMPANY OUTLINE The Main Facts 1) Focusing Business
Ready-mixed Concrete Facilities Locations
: Cement, Ready-mixed Concrete, Dry Mortar 2) Establishment : 1967 3) The main Facilities (factories) - Cement : 10 (manufacture 2, distribution 8) - Ready-mixed Concrete : 12 - Dry Mortar : 2 - R&D Institute : 1
Bu-cheon
Pa-ju
A-san Yong-in
4) Assets : 1 bil USD
5) Sales(‘07) : 400 mil USD 6) Sales of Ready- mixed Concrete (‘07) : 100 mil USD 7) Personnel : 864 (Dec, ’07)
Gu-ri
Cheong-ju
Gong-ju Ang-sung Jochiwon
9) Intent inventment : 5 Mil USD (For First Factory)
Dae-jeon
Cheong-ju
Ju-deok
-2. Company’s Force in Ready-mixed Concrete
Concrete Production Know-How in Hanoi, Vietnam
Integrated technology from Cement to Specific purpose Concrete
Integrated construction material businesses included Cement, Dry mortar, Concrete Support by Technology research center from raw material to quality control Various tech-knowledge of construction material
Wide and Long time period experience in concrete business
Advanced into Vietnam since 2007 for supply reliable high-strength concrete to Keangnam Hanoi landmark Tower which will be the highest building in Vietnam The Only 70Mpa High-strength Concrete producing capable supplier Provide with various resource from human resource to technical resources Reduce risk and uncertainty with wide experiences Introduced the most-modernized and efficient type of Batching plant in Vietnam The most environment friendly concrete business model
Accumulated experiences since 1978 Good reputation with 13 concrete plants with many competitive professionals
Successful professional experiences in concrete
KOLAS (Korea Laboratory Accreditation Scheme) certified research center (international standard research center certification) Successful Mock-up test with 130MPa Development Super high strength concrete (200 Mpa) Extremely Low temperature concrete development (below 20 C)
-3. Ready-mixed Concrete Factories in KOREA
Ready-Mix Concrete Factories
Ba tc he r
Pl an t
12 20
Total Capacity
4,040㎥/Hr
Sales of Ready-mixed Concrete (‘07)
App. 100 mil USD
-4. Ready-mixed Concrete Facilities in Viet Nam
Project Capacity of
Batcher Plant Mixer Truck
Keangnam-Hanoi Landmark Tower 210
/Hr, 180
/Hr
10 Unit
※ Vietnamese average Batch plant capacity is 120㎥ /hr for factory
Hanoi, Cau Giay, PhamHung street Twin Shaft, Inhouse Type 7㎥
-5. Organization
Song Han Ho - Ms. Trang
Park Joon Seok - Ms. Hai
대표 : Ra jeong Hyun - M/T : 10 unit - W/L : 2 unit - mechanic
Lee Ho Gu Lim Jong Won - Mr. Phu - Mr. Sau - Mr. Hung - Mr. Nam
1
-
1
1
1
1
2
4
2
4
Kim Yong Sung Jeong Yong Sik - Mr. Bac - Mr. Son - Mr. Manh - Mr. Trinh
-6. Factory outlook
Băng tải 1
Trạm 1
Trạm 2
Bang tải 2
. Facilities of Hanoi Factory
-1. Facility List
Cement Silo
2
500 Ton x 1, 200 Ton x 1
Bucket Elevator Type
Admixture Silo
1
200 Ton x 1
Bucket Elevator & blower
Agregate stack field
3
500㎥ x 3
Roof Cover
Admixture Tank
2
10 Ton
Chiller
3
40RT
Mixer
2
210㎥/H, 180 ㎥/H
Concrete Recycle facility
1
20 ㎥/hr
Mixer Truck (agitater)
10
6~7 ㎥
Wheel Loader
2
4.3 ㎥
Water tank
2
200 Ton
Cement Hopper
2
5 Ton
Sand Hopper
3
20 ㎥
Aggregate Hopper
3
20 ㎥
Admixture storage
2
0.2 Ton
Truck/ Heavy vehicle Weigh
1
100 Ton (5kg)
Water
2
1,000 Kg
Cement
2
2,000 Kg
Admixture (Powder)
2
1,000 Kg
aggregate
6
4,000 Kg
Admixture (Liquid)
4
50 Kg
3.5㎥/batch
Daewoo
-2. Factory facilities
-3. Factory facilities
. Factory Lab. Facility
-1. Lab Facility List
Mortar flow tester
1
φ35×H1.27㎝
Mortar Mixer
1
4.7ℓ
Cube Mold
2
5×5×5㎝
Moisture curing Machine
1
60x45x50㎝
Electric weigh
1
60Kg/5g
Electric weigh
1
3100g/0.01
Etc Infrared rays moisture meter
1
Coarse Aggregate sieve analysis
1
Sand sieve analysis
1
Drier
1
300℃
Compression stress tester
1
200ton
Mold Grinder
1
Cylinder Mold
200
Etc
φ10×20
Air tester
3
7ℓ
Concrete test hammer
1
α-650RX
Concrete in house Mixer
1
60ℓ/ ONE SHAFT
Thermo hygrostat
1
700x700x850㎜
Cure thermometer
1
0~100℃
Cure Tank
3
Hybrid Recorder
1
Etc
-200 ~ 400℃
-2. Factory facilities
-3. Factory facilities
. Quality Control System - Material • Suppliers of raw materials • material management/insfection • Cement • Coarse Aggregate (Gravel) • Fine Aggregate (Sand) • Admixture • Silicafume • Water
Ⅳ-1
Suppliers of Raw materials Supplier
NghiSon, Phuc Son Etc.
Thanh hoa
Hacma Etc.
Hong River
Vimeco Etc.
Ha Tay, Phu Tho Etc.
Seah, Silkroad
Korea, Hung Yen
Elkem
China
Supplier requirement
• Most important Priority is on Quality • Reliable Delivery • Resonable Price
-2. 1. Cement • Standard : ASTM C 150:07 • Test Items and Standard
g/ ㎥
-
ASTM C188-95
㎡/kg
≥ 2,800
ASTM C204-07
%
≤ 6.0
ASTM C114-07
%
≤ 3.0
ASTM C3107
Min Hr
≥ 60
N/㎡
≤ 10 ≥ 12.4 ≥ 19.3
• Inspection/Experiment Period : More than 4Times/year • Inspection/Experiment Organization : Competent authority (IBST)
ASTM C191-99 ASTM C109M-99
-2. 2. Coarse Aggregate (Gravel) • Standard : ASTM C33-07 • Test Items and Standard g/ ㎥
≥ 2.4
ASTM C 128-07
%
≤ 0.5
ASTM C 123-07
%
≤ 5.0
ASTM C 142-97
%
≤ 50
ASTM C 131-07
%
-
ASTM C 127-07
%
≤ 1.0
ASTM C 117-04
• Inspection/Experiment Period : More than 4Times/year • Inspection/Experiment Organization : Competent authority (IBST)
-2. 3. Fine Aggregate (Sand) • Standard : ASTM C33-07 • Test Items and Standard
g/ ㎥
≥ 2.4
ASTM C 128-07
%
≤ 0.5
ASTM C 123-07
%
≤ 3.0
ASTM C 117-07
%
-
ASTM C 128-07
%
≤ 3.0
ASTM C 142-97
• Inspection/Experiment Period : More than 4Times/year • Inspection/Experiment Organization : Competent authority (IBST)
-2. 4. Admixture • Standard : ASTM C494-99 • Test Items and Standard
H/min H/min %
≥ 1:00 ≤ 3:30
ASTM C 403
≤ 3:30 ≤
88
ASTM C 138
≥ 125
%
%
≥ 115 ≥ 110 ≥ 125 ≥ 115 ≥ 110
• Inspection/Experiment Period : More than 1Times/year • Inspection/Experiment Organization : Competent authority (IBST)
ASTM C 78
ASTM C 139
-2. 5. Silicafume • Standard : ASTM C1240-05 • Test Items and Standard
Mg/ ㎥
-
㎡/g
≥ 15
%
≥ 105
%
≤ 3.0
%
≤ 6.0
%
≥ 85.0
%
0
• Inspection/Experiment Period : More than 1 Times/year • Inspection/Experiment Organization : Competent authority (IBST)
ASTM C1240-05
ASTM C311-07
ASTM C114-07
-2. 6. water • Standard - ASTM C94-00 - TCXDVN 302 : 2004
• Test Items and Standard
-
≥ 4.0 ≤ 12.5
ASTM D 1293 / TCVN 6492
≤ 500
≤ 350
ASTM D 512 / TCVN 6194
≤ 3,000
≤ 600
ASTM D 516 / TCVN 6200
-
≤ 2000
TCVN 4560
-
≤ 200
TCVN 4560
• Inspection/Experiment Period : More than 2 Times/year • Inspection/Experiment Organization : Competent authority (IBST)
. Quality Control System – Process Management •Process management • Temperature control • Moisture control • Mixing Time/Quantity • Measuring Material • Slump and Flow test
Ⅴ-1
Temperature control
• Target temperature of concrete : lower than 35 • raw material temperature management
60 ~ 80 ℃
-
24 ~ 28 ℃
8 ~ 15 ℃
30 ~ 40 ℃
25 ~ 30 ℃
Water Chiller - Sprinkling water - Covering roof
Ⅴ-2 Aggregate
surface moisture management
• The aggregate roof cover help control surface moisture even in raining and variety weather situation in raw material stacking field and storage bin for weigh
Ⅴ-3
Mixing Time management
• For the appropriate mixing and efficient producing we manage mixing time according to the concrete type • mixing time and producing quantity
Ⅴ-4
Measuring material
• Standard : ASTM C94/C 94M-05 •To reduce material input error, each material is weighed and measured seperately (Cement, Coarse aggregate, Fine aggregate, Admixture and water)
• Weigh/measure unit and allowable error
Mass
± 1%
Mass
± 3%
Mass
± 3%
Mass
± 1%
Ⅴ-5
Making and curing concrete test specimens and test
• Standard : ASTM C94/C 94M-05, TVCN 4453 : 1995 • Make test specimens after the Slump flow test • Concrete compress strength test perform avery 110
(1 Lot.)
• Compress strength test specimen
- If small amount is placed, make 3 piece of specimen (7 days : 1ea, 28days : 2ea)
• Test standard - The everage of any consecutive strength tests shall equal to, or greater than specified strength (f’c) - When the specified strength is greater than 35Mpa, no individual strength test shall be less than 0.9 f’c
• Compress standard test is performed by IBST and we have a official certification from them for the fairness (7days, 28days)
Ⅴ-6
Product test
Slump (Flow) Test
• Standard : KS F 4009 • Test Time : Before placing the concrete
•Test Standard and method
± 75 ± 100 ± 100
• Inspection/Experiment Period : Produce day, each type
KS F 2594
Ⅴ-7
Concrete Produce process
