Experimental study on preparing ecological building mortar by using solid waste

摘要

This paper presents a kind of ecological building mortar with a compressive strength of M5.0, M7.5 and M10, which includes waste residue as cementitious materials, and waste brick powder, waste mortar powder reclaimed sand instead of natural sand as aggregate. The test results shows that (1) mortar water consumption increase when recycled sand volume increases, but its water-retaining capacity goes up; (2) when different types of recycled sand are used instead of natural sand for middle and low strength mortar, there is no significant adverse effect on its strength, and the 28d compressive strength can all meet the designed strength requirements; (3) Little difference exists among the influence of different recycled sand on properties of mortar.