关键词: 激发剂;孔隙率;平均孔径;孔径分布;干缩率;强度;抗冻融性

Abstract: Comparison study is made for the application performance indexes of recycled mortar, i.e.porosity, average pore size, distribution of pore size, frost resistance etc.based on the two kind recycled mortar FB and FC, with different usage of activators.The result has disclosed that the recycled mortar has higher strength, lower dry shrinkage, lower porosity and uniform distribution of pore size, lower dry shrinkage rate and better freeze-thaw resistance at the activating of LQ1 and LQ2 activators.

Key words: activator;porosity;average pore size;pore size distribution;dry shrinkage rate;strength;freeze-thaw resistance