为了改善混凝土的脆性,大约在十五年以前,欧美各国有组织地开始研究在混凝土中掺入钢纤维,近几年在土木、建筑和其他领域中已积极试验应用。一、钢纤维混凝土的一般性质 1.钢纤维混凝土中掺入的钢纤维,一般是断面0.1～0.3mm~2,长20～30mm的针状物。断面形状近似四角形,也有近似圆形和三角形 In order to improve the brittleness of concrete, about 15 years ago, the countries in Europe and the United States started to study the incorporation of steel fibers into concrete. In recent years, they have been actively tested in civil engineering, construction and other fields. First, the general nature of steel fiber reinforced concrete 1. Steel fiber reinforced concrete fibers are mixed, usually section 0.1 ~ 0.3mm ~ 2, 20 ~ 30mm long needle. Section approximate square shape, there are also similar to round and triangular