The present invention provides a plastic concrete for a cutoff wall, and belongs to the technical field of cutoff concrete
engineering. The plastic concrete comprises a cementitious material, an aggregate, a water-
reducing agent and water, wherein a ratio of the water to the cementitious material in the plastic concrete is 0.92, the cementitious material comprises, by weight, 15-35 parts of
cement, 10 parts of
bentonite, 25 parts of clay, and 30-50 parts of
fly ash, the aggregates comprises sand and stone, the sand ratio of the aggregate is 47%, per stere of the plastic concrete is added with 1485 kg of the aggregate, the particle size of the stone is 5-20 mm (continuous
particle size distribution), and the plastic concrete comprises 0.2 parts by weight of the water-
reducing agent. With the plastic concrete prepared by the method of the present invention, the addition amount of the
fly ash can be significantly improved, and the use amount of the
cement can be reduced, such that the cost of the plastic concrete is significantly reduced; based on the current
raw material market price (the
cement is 490 yuan / t, the type II
fly ash is 160 yuan / t), the cost of per stere of the plastic concrete can be reduced by about 33-56 yuan.