0前言JC477（喷射混凝土用速凝剂）标准（以下简称JC477标准）于1995年实施。本文根据多年来对速凝剂产品检验分析经验，对该标准中部分内容提出一些看法。11d抗压强度指标表1是JC477标准中掺速凝剂喷射混凝土的指标。通过对本地区A、B两家厂产品的检验和分析，我们认为表1中id 0 Foreword JC477 (Accelerator for spraying concrete) standard (hereinafter referred to as JC477 standard) was implemented in 1995. In this paper, based on years of experience in the analysis and analysis of accelerators, some of the criteria in this standard are proposed. 11d Compressive Strength Index Table 1 is the index of shotcrete blended with accelerator in JC477 standard. Through the inspection and analysis of the products of A and B plants in this region, we believe that the ids in Table 1