本文件涵盖了通过测试从混凝土混合物中筛出的砂浆来确定坍落度大于零的混凝土凝结时间的方法。初凝时间和终凝时间是从混凝土混合物中筛选出的砂浆在初次接触水泥和水后达到规定抗渗透性值所需的时间间隔。 该方法可用于确定温度、水泥类型和含量、混凝土配合比和外加剂等变量对混凝土凝结时间和硬化特性的影响。 本试验方法适用于受控实验室条件和现场条件。

This document covers the method for determining the setting time of concrete with slump greater than zero, by testing mortar sieved from the concrete mixture. The initial setting time and the final setting time are the time intervals required for the mortar sieved from the concrete mixture to reach the specified values of penetration resistance after the initial contact of cement and water. The method can be used for determining the effect of variables such as temperature, type and content of cement, concrete mix proportions and admixtures, on the time of setting and hardening characteristics of concrete. This test method is applicable under controlled laboratory conditions, as well as under field conditions.