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一些施工单位用与结构或构件相同条件养护的混凝土试件来评定该批混凝土的强度。这种作法是错误的,是施工人员把标准养护强度与同条件养护强度的作用与概念混淆所致。二者的具体区别主要表现在以下几个方面。一、养护条件和养护时间不同标准养护强度是在试验室中,温度为20±3℃、相对湿度为90%以上的环境或在水中养护28d 所得到的混凝土试件强度。
Some construction units evaluate the strength of the batch of concrete using concrete specimens that are maintained in the same conditions as the structure or component. This practice is erroneous. It is caused by the confusion between the standard maintenance strength and the effect and concept of the same condition. The specific differences between the two are mainly manifested in the following aspects. I. Curing conditions and curing times Different standard curing strengths are the strength of concrete specimens obtained in a laboratory at a temperature of 20±3°C, a relative humidity of 90% or more, or water conservation for 28 days.