用珊瑚砂配制混凝土时,混凝土的含气量提升,坍落度损失明显改善,混凝土的7d抗压强度略有提升,28d抗压强度下降,混凝土的开裂条纹数和开裂面积都有明显的改善,珊瑚砂混凝土的电通量要优于天然河砂。 When the concrete is prepared with coral sand, the gas content of the concrete is increased, the slump loss is obviously improved, the compressive strength of concrete is slightly increased at 7d, the compressive strength at 28d is decreased, the number of cracking fringes and the cracking area of ​​the concrete are obviously improved, Electricity flux of coral sand concrete is better than natural river sand.