摘要
再生混凝土是发展绿色混凝土的一项重要途径,其主要特点是利用废弃混凝土所生产的再生骨料部分或全部取代天然骨料。再生骨料的性能是保证再生混凝土质量的关键。按照JGJ 52—2006《普通混凝土用砂石质量及检验方法标准》对再生骨料的基本性能进行了测试,并与天然骨料的性能进行了对比。和天然骨料相比,再生骨料有表观密度较小、吸水率与含水率高、压碎指标值较高、针片状含量小、棱角较多等特点。此外对试验结果进行了分析,并提出了一些改善意见。
The recycled concrete is an important way in the development of green concrete, its main feature is that some or all of the recycled aggregate replace natural aggregate.The performance of recycled aggregate is the key to guarantee the quality of the recycled concrete.in accordance with the＂Ordinary concrete sand standards for the quality and examination methods＂ （JGJ 52-2006） ,the basic properties of the recycled concrete are tested.Compared to natural aggregate,the features of recycled aggregate show smaller apparent density,higher water absorption, moisture content and crushed index value, smaller needles content, more edges and comers .In addition, the test results are analyzed, proposing the views of some improvement.
出处
《混凝土》
CAS
CSCD
北大核心
2009年第9期85-86,106,共3页
Concrete
基金
国家自然科学基金青年基金项目(50808173)
中国矿业大学科学基金项目(2007B004)
关键词
废弃混凝土
再生骨料
基本性能
waste concrete
recycled aggregate
basic properties
