▎ 摘　　要

NOVELTY - An ultra-high early strength concrete comprises 105-135 pts. wt. cement, 45-65 pts. wt. silica waste, 270-310 pts. wt. fine aggregate, 330-370 pts. wt. coarse aggregate, 0.9-1.5 pts. wt. nano-silica/graphene composite material, 2-2.8 pts. wt. composite modified polycarboxylate water reducer, 0.6-1 pts. wt. defoamer, 0.5-0.8 pts. wt. air-entraining agent, and 52-58 pts. wt. water. USE - Super early strength concrete is useful for fast repairing the surface defect of highway bridges and road concrete structures, and for cement concrete roads, where the road surface damage is serious, and it is necessary to lock traffic to repair, so the development is very early strength, fast and hard concrete is very necessary. ADVANTAGE - The ultra-early strength concrete has excellent super early strength performance, and realizes high value comprehensive utilization of industrial solid waste. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing the ultra-early strength concrete..