How to prevent segregation in concrete. Which is the best concrete anti-segregation agent in Hebei?

How to prevent segregation in concrete. The solution is as follows:

(1) After the cement enters the factory, it must be tested according to the required test items, paying special attention to the water demand of the cement. If any abnormal water demand is found When required, conduct a timely adaptability test of cement and currently used admixtures. If necessary, re-do the concrete mix test.

(2) On the premise of ensuring that the water-cement ratio of the concrete remains unchanged (the 28-day strength of the concrete can basically be guaranteed), the amount of water-reducing agent should be appropriately adjusted.

(3) On the basis of ensuring strength, use a larger mix ratio of fly ash and other admixtures for production (commercial concrete companies should have different mix ratios of the same strength level), This must be based on experimentation. Substituting a small amount of cement with Ⅰ and Ⅱ fly ash will be able to control the segregation phenomenon of concrete and improve the workability of concrete. Admixtures. Most of the admixtures used in concrete are multifunctional products composed of water-reducing agents and other products such as air-entraining agents, retarders, plastic retaining agents, etc. They are indispensable and important materials for pumping concrete. Admixtures The incorporation of admixtures can greatly improve the performance of concrete mixtures, but improper use of admixtures may lead to segregation of concrete. Segregation is a phenomenon in which the cohesion between the constituent materials of a concrete mixture is insufficient to resist the sinking of coarse aggregates. The main manifestations are concrete aggregate separation, delamination, sinking, poor workability, etc. Concrete segregation will seriously affect all aspects of concrete performance.

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