SOAL-SOAL LATIHAN : 1. Jelaskan apa yang akan terjadi pada beton segar maupun beton kaku apabila ukuran butiran agregatnya (gradasi) seragam. 2. Dari hasil pengujian di laboratorium dipero…Full description
SOAL-SOAL LATIHAN : 1. Jelaskan apa yang akan terjadi pada beton segar maupun beton kaku apabila ukuran butiran agregatnya (gradasi) seragam. 2. Dari hasil pengujian di laboratorium dipero…Full description
+et the base le7el by means () the spirit le7el and the three le7eling scre=s (n the base*)rame. aise the head s( that the pendulum arm s=ings clear () the sur)ace. (7ement () the head () the tester, carrying the s=inging arm, graduated scale, p(inter and release mechanism, is c(ntr(lled by a rack and pini(n (n the rear () the 7ertical c(lumn. A)ter unclamping the l(cking kn(b A at the rear () the c(lumn, the head may be raise (r l(=ered by turning either () the kn(bs -D -L. ?hen the reMuired height is (btained the head unit must be l(cked in p(siti(n again by clamping kn(b A. @heck the "er( setting. his is d(ne by )irst raising the s=inging arm t( h(ri"(ntal release p(siti(n, (n the right*hand side () the apparatus. n this p(siti(n it is aut(matically l(cked in the released catch. he p(inter is then br(ught t( its st(p in line =ith the pendulum arm. he pendulum arm is released by pressing butt(n @. he p(inter is carried =ith the pendulum arm (n the )(r=ard s=ing (nly. @atch the pendulum arm (n its return s=ing, and n(te the p(inter reading. eturn the arm t( the release p(siti(n. @(rrect the "er( setting as necessary by adjustment () the )ricti(n rings N. ) the p(inter has s=ung past the "er( p(siti(n, rings N are scre=ed up a little m(re tightly. ) it has n(t reached "er( the ring sh(uld be unscre=ed a little. ?ith the pendulum arm )ree, and hanging 7ertically, place the spacer =hich =ill be )(und attached t( achain (n the base () the 7ertical c(lumn, under the li)ting*handle setting*scre= t( raise the slider. ;(=er the head () the tester using kn(bs A nad - s( that the slider just t(uches the r(ad sur)ace, and clamp in p(siti(n =ith kn(b A. rem(7e the spacer.
EAA304 – HIGHWAY AND TRAFIC LABRATORY
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@heck the sliding length () the rubber slider (7er the sur)ace under test, by gently l(=ering the pendulum arm until the slider just t(uches the sur)ace )irst (n (ne side and then (n the (ther side () the 7ertical the sliding legth is the distance bet=een the t=( p(ints =here the sliding edge () the rubber t(uches the test sur)ace. ) necessary, adjust t( the c(rrect length by raising (r l(=ering the head slightly. ?hen the apparatus is set c(rrectly the sliding length sh(uld be bet=een 3$! and 3$&mm (n the scale pr(7ided, the (uter marks are 3$&mm apart and the inner (nes each indicate the $mm t(lerance all(=ed. 6lace pendulum arm in its release p(siti(n. he apparatus is n(= set ready )(r (perati(n. ?et the r(ad sur)ace and slider, ensuring that the r(ad sur)ace is )ree )r(m l((se grit. -ring the p(inter r(und t( its st(p. elease the pendulum arm by pressing butt(n @ and catch it (n the return s=ing, be)(re the slider strikes the r(ad sur)ace. G(te the reading indicated by the p(inter. eturn the arm and p(inter t( the release p(siti(n, keeping the slider clear () the r(ad sur)ace in this (perati(n by means () the li)ting handle. epeat s=ings, spreading the =ater (7er the c(ntact area =ith the hand (r a brush bet=een each s=ing. ec(rd the mean () )i7e successi7e readings, pr(7ided they d( n(t di))er by m(re than three units. ) the range is greater than this, repeat s=ings until three successi7e readings are c(nstant rec(rd this 7alue. aise the head () the tester s( that it s=ings clear () the sur)ace again and check the )ree s=ing )(r "er( err(r.
EAA304 – HIGHWAY AND TRAFIC LABRATORY
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