Causes of collapse except admixture

In addition to admixtures and concrete components, concrete collapse can also be caused by the following reasons:

1. Insufficient amount of concrete admixtures: When the amount of admixtures in concrete is not enough, the effect of retarding and plastic protection may be poor, resulting in concrete collapse. Therefore, in the construction process, it is necessary to strictly control the amount of admixtures to ensure good retarding and plastic protection effect.

2. High temperature weather effects: In hot weather conditions, some admixtures may fail at high temperatures. At the same time, the high temperature will accelerate the evaporation of water, resulting in bubble overflow, so that the collapse of the newly mixed concrete is lost too fast.

3. Other material issues: Other materials in concrete may also affect its collapsing properties. For example, the fineness of fly ash, the firing vector, the density and firing loss of mineral powder, the mud content of coarse and fine aggregates and the fineness modulus of fine aggregates may affect the collapse of concrete.

4. Cement temperature: The temperature of cement also affects the collapse of concrete. Too high or too low a cement temperature can lead to unstable concrete performance, which increases the risk of collapse.

5. Sand grading and containing flocculants: Poor grading of sand or containing flocculants may also adversely affect the performance of concrete, resulting in the collapse of concrete.

6. Transport and pumping distance: Long distance transport and pumping can lead to structural damage or loss of performance of concrete in the process, increasing the risk of concrete collapse.