Test Study on Cube Compressive Strength of Recycled Lightweight Aggregate Concrete

摘要

In order to study cube compressive strength of recycled lightweight aggregate concrete, with the change parameters of replacement rate of recycled lightweight coarse aggregate, 15 standard cube test blocks were designed and produced to carry out compressive strength test. The failure process and failure mode of test blocks were recorded; cube compressive strength of test blocks were measured, based on the principle of least square method, the relation curves between cube compressive strength and replacement rate were all analyzed and fitted, the influence change parameters made on cube compressive strength was discussed. It is shown that splitting failure occurs in the test blocks of recycled lightweight aggregate concrete at last; the relations between cube compressive strength and replacement rate are all linear functions; cube compressive strength of recycled lightweight aggregate concrete increases as replacement rate of recycled lightweight coarse aggregate decreases.