In engineering practice, on the one hand, the compressive strength of test blocks under the same conditions is used as the basis for demoulding, and on the other hand, it is based on the fact that demoulding after concrete setting does not affect the appearance quality of the concrete, such as not sticking to the mold, falling corners, etc.
However, in practical engineering, the sampling and production of test blocks are not standardized, resulting in a widespread phenomenon of arbitrary demoulding, which poses hidden dangers to engineering quality and construction safety.
Premature demoulding can cause damage to the appearance of concrete, while severe cases can result in cracks.
In severe cases, it can cause structural collapse and lead to major quality accidents.
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