機制砂高質量加工與混凝土應用研究
摘要:機制砂具有料源穩(wěn)定、氯離子含量低等特點,在混凝土中應用廣泛。依托某公路工程,開展粉砂巖機制砂高質量加工與應用研究,重點介紹了粉砂巖機制砂高質量加工技術,分析了石粉含量對高性能混凝土工作性能的影響,提出了“六區(qū)兩室一池”的機制砂場區(qū)布局以及人工與機械相結合的三級分揀技術。
關鍵詞:機制砂 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
隨著國家“節(jié)能環(huán)保”的深入推進,天然砂資源的限制開采,目前市場的天然砂資源成本高,料源不穩(wěn)定,天然砂的品質愈來愈差,氯離子含量超標最為典型,而且供貨不及時,很難獲取,嚴重影響結構物質量和施工進度。(剩余1975字)