Page - 938 - in Book of Full Papers - Symposium Hydro Engineering

Table 6. Water-cement ratio Results 𝑾 𝑪 VB time Lab. Temp. Concrete Temp. Slump Specific gravity of fresh concrete S ° C ° C mm gr/Cm3 0.35 120> 19.6 15.1 None 2.097 0.45 120> 19.8 18.0 None 2.154 0.55 120> 19.8 18.4 None 2.171 0.80 45 19.8 18.8 0 2.320 0.80 15 19.5 17.7 0 2.395 0.7 34 20.4 18.0 0 2.372 0.75 18 20.8 18.4 0 2.349 0.80 18 21.9 23.2 0 2.365 0.75 22 19.6 20.5 0 2.375 0.80 19 19.9 21.7 0 2.268 3.2. SPECIMENS In total, nine different concrete mixtures given in Table 7 prepared. Cylindrical samples used with height of 30 cm (12 in.) and diameter of 15.2 cm (6 in.). Samples made in three layers by vibrating method with Vebe table following the USBR 4906 [12]. Totally 72 specimens were made with 140 kg cement materials per cubic meter. Amount of 3% and 6% of total coarse and fine-aggregate materials were replaced by fillers in different mix design to investigate the effects of different amount of fillers. The results are shown on table 7. Table 7. Mixing ratio (kg/m3) Specimens No. Weight of Cement Weight of filler Type of filler Weight of coarse-aggr. Weight of coarse-aggr. Weight of fine-aggr. Weight of water 𝑾 𝑪 RCC-1 140 130 6% mineral powder 690 460 945 112+34 0.8 RCC-2 140 130 6% iron concentrate 690 460 945 112+34 0.8 RCC-3 140 130 6% coke 690 460 945 112+34 0.8 RCC-4 140 65 + 65 3% mineral powder+3% iron concentrate 690 460 945 112+34 0.8 RCC-5 140 65 + 65 3% mineral powder+3% iron powder 690 460 945 112+34 0.8 RCC-6 140 130 6% iron powder 690 460 945 112+34 0.8 RCC-7 140 130 6% coal powder 690 460 945 112+34 0.8 RCC-8 140 65 + 65 3% mineral powder+3% coal 690 460 945 112+34 0.8 RCC-9 140 65 + 65 3% mineral powder+3% coke 690 460 945 112+34 0.8 938