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一、喷射混凝土的原材料选择1.水泥水泥品种和标号的选择主要应满足工程使用要求,当加入速凝剂时,还应考虑水泥对速凝剂的相容性。喷射混凝土应优先选用不低于425号的普通硅酸盐水泥。当岩石、地下水或拌合水中含硫酸盐时,应选用抗硫酸盐水泥;当对混凝土早强有特殊要求时,可使用硫铝酸盐水泥;当喷射混凝土用于耐热结构时,可使
First, the choice of raw materials shotcrete 1. Selection of cement and cement varieties and labels should mainly meet the requirements of the project, when adding quick-setting agent, cement should also consider the compatibility of accelerator. Shotcrete should be preferred to ordinary Portland cement no less than 425. When rock, groundwater, or mixing water contains sulfate, anti-sulfate cement should be used; when there is special requirement for early strength of concrete, sulphoaluminate cement can be used; when shotcrete is used for heat-resistant structure, it can be used.