目前按照规范采用验收掺速凝剂的水泥净浆凝结时间是否合格来推测喷射混凝土凝结时间，不能检验出速凝剂与水泥之外的其他材料的适应性，往往以此验收合格的速凝剂在现场使用效果较差，经常出现喷射混凝土掉块、回弹量大等问题。针对这些问题,采用室内试验与现场施工相结合的方法进行研究，总结出采用喷射混凝土凝结时间试验进行速凝剂检验的方法和凝结时间控制限值，避免水泥净浆方法检验对象相对单一的问题。结果表明： 喷射混凝土凝结时间试验方法及凝结时间限值的应用，能准确判断速凝剂凝结时间，检验结果与现场实际使用情况相吻合，能有效指导现场施工，提升喷射混凝土的技术效益，节约成本，提高施工效率，为安全作业提供保障。

The setting time of shotcrete and the adaptability of materials except cement and accelerator cannot be determined according to the setting time of cement slurry mixed with accelerator based on the existing specifications. The application effect of these accelerators in the field is poor, and shotcrete block and large rebound phenomena often occur. Accordingly, the laboratory test and field construction are employed to analyze the accelerator checking method and setting time control limit, which address the problem that the test object of cement net slurry method is relatively single. The results show that the application of shotcrete setting time test method and setting time limit can accurately judge the adaptability of accelerator setting time, and the test results are consistent with the actual use of the site, which can effectively guide the site construction, improve the technical benefit of shotcrete, save costs, improve construction efficiency, and provide support for the safe operation.