Concrete mixing vehicle use the most trouble in addition to pot, segregation problem is also very headache. Stirred tank bigger and more easily from the dilute? What is the segregation of the reasons?The truck home forum many card is also discussed, Xiaobian also questioned some of concrete mixer parts truck manufacturers related personnel, the main reason for segregation or mixing technical problem, but the mixer improper use will cause the concrete segregation phenomenon.
Simple to say is the main material of mortar and concrete in the sand separation. From Baidu encyclopedia more professional explanation is: the concrete mixture composition material between the cohesion is insufficient to resist the coarse aggregate sinking, composition of concrete mixture are separated from each other, causing the internal composition and structure of the phenomenon of uneven.
The segregation of concrete mixing station mixing main or technical problems of concrete, concrete mixing ratio of different levels are strict norms, the use of water, cement, sand and stone, admixture undeserved may cause segregation of concrete. Mainly consists of the following and several cases:
1, the water ratio of the material properly. Water more, less the amount of cement will cause segregation.
2, sand quality is not good. Many stone sand, high water content will cause segregation.
3, the aggregate gradation is not good. Gravel particle size increases, aggregate gradation becomes poor, single grading are easy to cause the segregation of concrete.
4, excessive additives added. Retarder admixtures such as excessive, or additive and cement adaptability is not good can also cause segregation of concrete.
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