近年来,世界各国为了克服干法喷射混凝土强度低,粉尘高,回弹较多等一系列缺点,在湿法喷射混凝土施工工艺方面进行了探讨。所谓湿法喷射混凝土,就是物料在被送入管道之前,加水予先拌好,形成半塑性的混合物。由于混合用水能准确地加以控制,水泥的水化作用比较充分,因而具有强度高,粉尘小,回弹率小,生产率高等一系列优点。湿法喷射工艺是:按一定的配合比 In recent years, all countries in the world in order to overcome the dry shotcrete strength low, high dust, rebound more and a series of shortcomings in the wet shotcrete construction process are discussed. The so-called wet shotcrete, is the material before being sent to the pipeline, add water to be mixed well to form a semi-plastic mixture. As the mixing of water can be accurately controlled, the hydration of cement is more adequate, and therefore has a series of advantages of high strength, small dust, small rebound rate, high productivity. Wet spray process is: Press a certain mix