不同来源再生骨料的基本性能及其对混凝土抗压强度的影响

Basic property of recycled aggregates from various sources and their influence on compression strength of concrete

针对实际工程中废弃混凝土种类和性能复杂多变的特点,系统测试了由4类不同来源(拆除的废旧建筑物、预制构件厂不合格构件、废弃马路路面和试验室废弃试件)废弃混凝土破碎加工而成的共6种再生骨料的基本性能。试验结果表明,不同来源再生骨料的基本性能存在一定差异。研究利用不同再生骨料配制再生混凝土,并测试了不同来源再生骨料对再生混凝土抗压强度的影响。

Regarding to complexity in types and properties of waste concrete in practical engineering, system test was made on basic property of 6 kinds of recycled aggregates which were produced by crashing and processing abandon concrete from 4 different sources i.e., demolished concrete structures, rejected component part from prefabrication factory, waste pavement and laboratory cast concrete. The test result indicated that basic property of recycled aggregates form different sources exist some differences. Study was made on preparation of reclaimed concrete using different recycled aggregates and tested the influence of recycled aggregates from difference sources on compression strength of reclaimed concrete.