论文部分内容阅读
在地下工程建设中,喷射混凝土作为加固岩层、维护其稳定性的一种手段,得到了广泛的应用。在地面的护坡工程、裂损结构物的修补和加固等,喷射混凝土的应用也日益广泛。但是,与普通混凝土一样,脆性是其主要弱点,从而影响了它的使用范围。为了改善喷射混凝上的物理力学性能,尤其是提高其动力强度和抵抗拉伸、弯曲的能力,从1979年起,我们开展了钢纤维喷射混凝土的试验,并在部分工程中得到应用。
In underground engineering construction, shotcrete has been widely used as a means of strengthening rock formations and maintaining their stability. Slope protection works on the ground, repair and reinforcement of cracked structures, etc., the application of shotcrete is also increasingly widespread. However, like ordinary concrete, brittleness is its main weakness, which affects its use. In order to improve the physico-mechanical properties of jet coagulation, in particular to increase its strength and resistance to stretching and bending, from 1979 onwards, we launched steel fiber shotcrete tests and applied them in some projects.