| abstract |
The present invention is to provide an on-site remixed ultra-crude concrete composition and a maintenance construction method using the same, and as a ready-mixed concrete material, 4.5 to 5.10% by weight of water, 11.00 to 13.50% by weight of ordinary Portland cement, 40.00 to 42.50% by weight of fine aggregates, Consisting of coarse aggregate 29.50 ~ 31.00% by weight, water reducing agent 0.17 ~ 0.20% by weight, AE agent 0.01 ~ 0.03% by weight, as an additional admixture material, latex 3.40 ~ 3.85% by weight, quick-setting admixture, silica fume 0.90 ~ 2.10 by weight %, crude steel rapid material 5.20 ~ 6.00% by weight, antifoaming agent 0.08 ~ 0.12% by weight, retardant 0.05 ~ 0.07% by weight. By using pozzolanic materials such as fume, the amount of unit cement can be reduced, and through the advantages of pozzolan, the existing latex usage can be significantly reduced while maintaining concrete performance, thereby reducing the ever-increasing road maintenance cost. |