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喷射钢纤维混凝土(SFRS-SteelFiberReinforcesShotcrete)是在普通混凝土中掺入钢纤维 ,依靠压缩空气高速喷射在结构表面的一种性能优良的水泥基复合材料。混凝土中少量添加纤维 ,可以显著改善其抗裂性、延性、韧性及抗冲击性能。昆石高速公路小团山隧道采用湿喷钢纤维混凝土进行初期支护 ,取得较好的效果。本文结合工程实例 ,就施工工艺问题作一些简介
Sprayed steel fiber reinforced concrete (SFRS-SteelFiberReinforcesShotcrete) is the ordinary concrete mixed with steel fibers, compressed air jet on the surface of the structure by a high-performance cement-based composite materials. Adding a small amount of concrete fibers, can significantly improve its crack resistance, ductility, toughness and impact resistance. Queensland-Xiaotunshan tunnel tunnel using wet-blasting steel fiber reinforced concrete initial support, and achieved good results. This article combined with engineering examples, on the construction process to make some brief introduction