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混合料设计、喷射技术、施工现场管理和喷射混凝土层厚度等因素对喷射混凝土的成功应用有很大影响。地下工程支护用的喷射混凝土混合料的设计,过去似乎主要凭经验完成。为了发挥喷射混凝土在经济效益方面的最大优势,研究一种合理的混合料设计方法已势在必行了。从根本上说,这样的一种混合料设计应包括确定水泥、骨料和水的合理配比,以便获得具有某些规定性质(如
Factors such as mix design, spray technology, construction site management, and shotcrete layer thickness have a great influence on the successful application of shotcrete. The design of shotcrete mixes for underground engineering support seems to have been largely accomplished by experience. In order to exert the greatest advantage of sprayed concrete in terms of economic efficiency, it is imperative to study a reasonable method of mixing materials design. Fundamentally, such a mix design should include the determination of a reasonable ratio of cement, aggregate, and water in order to obtain certain prescribed properties (eg,