Experimental study on physical and mechanical properties of lightweight concrete with waste clay brick aggregate
Crushing waste clay bricks into aggregates for preparing lightweight concrete can simultaneously achieve the goals of resource reuse,reducing environmental pollution and saving natural aggregates.In order to reveal the performance of lightweight concrete with waste clay brick aggregate,laboratory tests were carried out to study the dry density,water absorption and compressive strength of lightweight concrete affected by such factors as the gradation of waste brick aggregate,volume ratio of waste brick aggregate,water cement ratio,and foam content.The results show that the foam content has a significant impact on the dry density and compressive strength.When the foam content increases from 2％to 5％,the dry density decreases from 1 407 kg/m3 to 1 128 kg/m3.The compressive strength decreases from 13.39 MPa to 4.66 MPa,and the water cement ratio has a significant impact on the water absorption.When the aggregate is graded from group A to group C,the water absorption decreases from 11.3％to 5.7％.
万方数据
维普
