混凝土及砂浆试块的强度是反映单位工程主体结构质量的重要依据，施工及验收规范规定了对混凝土及砂浆强度的评定方法。 一、问题 施工现场制作成型的混凝土及砂浆试块往往存在以下三个方面的问题，从而影响了单位工程质量的综合评定。 １、单组试块的抗压强度值达不到设计要求 The strength of concrete and mortar test blocks is an important basis for reflecting the quality of the main structure of a unit project. The code for construction and acceptance specifies the method for assessing the strength of concrete and mortar. First, the problem The construction site for the production of concrete and mortar test blocks are often the existence of the following three aspects, thus affecting the quality of the unit project a comprehensive assessment. 1, the compressive strength of a single test block does not meet the design requirements