机制砂高质量加工与混凝土应用研究
摘要:机制砂具有料源稳定、氯离子含量低等特点,在混凝土中应用广泛。依托某公路工程,开展粉砂岩机制砂高质量加工与应用研究,重点介绍了粉砂岩机制砂高质量加工技术,分析了石粉含量对高性能混凝土工作性能的影响,提出了“六区两室一池”的机制砂场区布局以及人工与机械相结合的三级分拣技术。
关键词:机制砂 石粉含量 高性能混凝土 工作性能
Research on High Quality Processing of Machine-Made Sand and Application of Concrete
FAN Yuanlin1,2
1. Hangzhou City, Zhejiang Province, 310052 China; 2. Zhejiang Communications Construction Group Co., Ltd., Hangzhou City, Zhejiang Province, 310052 China
Abstract: Machine-made sand is widely used in concrete because of its stable material source and low chloride content. Based on a certain highway project, the research on high-quality processing and application of siltstone machine-made sand is carried out. It focuses on the high quality processing technology of siltstone machine-made sand, analyzes the influence of stone powder content on the workability of high-performance concrete, and puts forward the layout of "six zones, two chambers and one pool" of machine-made sand field and the three-level sorting technology combining manual and mechanical methods.
Key Words: Machine-made sand; Stone powder content; High-performance concrete; Working performance
随着国家“节能环保”的深入推进,天然砂资源的限制开采,目前市场的天然砂资源成本高,料源不稳定,天然砂的品质愈来愈差,氯离子含量超标最为典型,而且供货不及时,很难获取,严重影响结构物质量和施工进度。(剩余1975字)