再生细集料的不同取代率对砂浆性能的影响

摘要

再生细集料是硬化的水泥砂浆颗粒和水泥颗粒组成。用废旧混凝土破碎产生的再生细集料部分或全部代替天然细集料来配制砂浆，通过采用固定配合比和调整减水剂、用水量两种方法，研究了再生细集料取代率对砂浆性能的影响。%　　Recycled fine aggregates are composed of hardened cement mortar particles and cement particles. The mortar was prepared with recycled fine aggregates from crushed waste concrete instead of natural fine aggregate partly or fully. Two methods of fixed proportion and adjustment of plasticizer and water amount were used to study influence of replace rate of recycled fine a ggregate on performance of mortar.