原状机制砂高强混凝土试验研究  

Experimental study on high-strength concrete mixed with proto-machine-made sand

作　　者：李凤兰[1] 朱倩[1] 徐阳洋[1] 

机构地区：[1]华北水利水电学院河南省水工结构与材料工程重点学科开放实验室

出　　处：《水利水电技术》2010年第7期76-78,共3页Water Resources and Hydropower Engineering

基　　金：郑州市科技领军人才资助项目(096SYH23105);清华大学水沙科学与水利水电工程国家重点实验基金(sklhse-2008-D-02)

摘　　要：针对按现行建筑用砂标准配制高强度等级混凝土需控制Ⅱ类机制砂石粉含量小于5％的规定，选用石粉含量为3％～16％的原状机制砂，通过试验研究了配制C60混凝土的可行性，分析了石粉含量对混凝土拌和物工作性能和混凝土基本力学性能的影响规律，提出了原状机制砂石粉含量限值的合理控制范围。In view of the current specification in standard of sand for building in China that the content of stone powder in second class machine-made sand must be limited into 5% for mixing high-strength concrete, the proto-machine-made sands with content of stone powder from 3% to 16% arc used to study the feasibility of mixing C60 concrete. Based on the tests concerned, the law of the influences from the stone powder content on the workability of the concrete mixtures and the basic mechanical properties of the concrete are analyzed herein, and then the reasonable range of the stone powder content in the proto-machine-made sand is proposed as well.

关 键 词：高强混凝土 机制砂 石粉含量 拌和物 工作性能 基本力学性能 

分 类 号：TU521.1[建筑科学—建筑技术科学] TU528.1