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现象 1.混凝土试块留置数量未根据施工及验收规范规定留置,数量不足。2.混凝土试块不密实,掉角,轻轻一碰,有碎块掉落。3.试压时,强度达不到设计要求。原因分析操作 1.混凝土配合比用错,配合比计量不准确,造成抗压强度低。2.没有专人负责,造成漏取试块。试块未进行标准养护。3.
Phenomenon 1. The number of retained concrete blocks has not been retained according to the provisions of the construction and acceptance specifications, and the quantity is insufficient. 2. The concrete test block is not dense, dropped out of the corner, touched lightly, there are pieces falling. 3. When the pressure is tested, the strength cannot meet the design requirements. Cause Analysis Operation 1. The concrete mix ratio is wrong, the mix ratio measurement is inaccurate, resulting in low compressive strength. 2. There is no special person responsible, resulting in missing test blocks. The test block did not undergo standard maintenance. 3.