影响再生骨料混凝土材料强度的因素分析

Influencing factors for strength of recycled aggregate concrete

通过6组不同因素影响下5种再生骨料替代率混凝土立方体抗压试验,研究各因素对再生骨料混凝土强度的影响;影响因素包括:混凝土水灰比、砂率、外加剂、配制方式、加载速率和养护时间等。得出再生骨料混凝土强度的变化规律,基于微观机理进行了原因分析,提出了提高再生骨料混凝土强度的相关措施。

The axial compressive tests were carried out on recycled aggregate concrete（RAC） cubes to study the influences of some factors including water cement ratio,sand ratio,additive,casting methods,loading rate and curing time on the strength of RAC.5 groups different ratios of recycled aggregate replacement were used in RAC.The strength of RAC with respect to different influence parameters were presented and analyzed based on the micro-mechanism of mechanics.Some measures for improving strength of RAC were put forward.