Effect of Admixtures on the Performance of Recycled Fine Aggregate Cement Mortar

The effect of additives on the mechanical properties and water resistance of recycled fine aggregate cement mortar is studied. The result shows that the 28d flexural strength, compressive strength and osmotic pressure of cement mortar samples compared with the blank sample are increased by15.6%, 35.5%, 41.1% when silicone waterproofing agent is 0.2wt%, naphdalin series water reducer is wt1.0%,polycarboxylate super plasticizer is 0.8wt%.