Carbonized or non-carbonized recycled cement concrete powders were selected as supplementary cementi-tious materials,and the effects of different cement substitutes(0,20％,40％,60％)on the workability and mechanical properties of foamed concrete were investigated.The results show that carbonization can improve the workability of fresh foamed concrete paste by 1.08％～5.61％.The mechanical strength is positively correlated with the density of the matrix.Compared with non-carbonized recycled powder foamed concrete,carbonization treatment can significantly increase the density of foamed concrete and reduce the water absorption rate,thus improving the compressive strength of foamed concrete.With the increase of the content of carbonized powder,the influence on the compressive strength of foamed concrete increases first and then decreases,and reaches the maximum value when the content is 20％.
万方数据
维普
