用特细砂和机制砂配制喷射钢纤维混凝土试验及应用研究

针对福建地区无天然中砂而特细砂资源丰富的现状，讨论和研究了用特细砂和机制砂混合后配制喷射钢纤维混凝土，介绍了原材料选择和配合比设计原则，混合砂砂率对混凝土强度的影响以及用特细砂和机制砂配制的喷射铜纤维混凝土的性能，结果表明与天然中砂相比，用特细砂和机制砂混合配制的喷射钢纤维混凝土其性能并无明显差异。

Experiment analysis and application of steel fiber reinforced sprayed concrete with superfine sand and machine-made sand

In this paper,the steel fiber reinforced sprayed concrete(SFRSC) with superfine sand and machine-made sand is studied in an attempt to use the abundant resources of superfine sand in Chongqing.The principle for selecting raw material and proportion design of SFRSC are discussed,and influences of sand percentage on the strength of concrete,the property of SFRSC using superfine sand and machine-made sand are investigated.The results show that compared with the properties of concrete with natural sand, there i...