PCE掺量与人工砂MB值的关系

The layered structure of clay has strong adsorption on the comb-like PCE molecules, and the excessive MB value will lead to the sharp increase of PCE content. Some mixing stations do not strictly control the MB value of artificial sand, MB value suddenly high or low, when MB value rises, increase PCE dosage to maintain production, when MB value falls, PCE dosage adjustment is not urgent, resulting in concrete segregation and slagging. Cause blockage or quality accidents.



After years of practice and experimental study, it is considered that methylene blue test can effectively detect the concavity and convexity of adsorption function in stone powder. Therefore, not only the content of stone powder but also the value of MB affect the function of concrete. Reasonable control of MB is the key factor to control the amount of manufactured sand powder. The preparation of methylene blue solution requires steam water, otherwise it will affect the accuracy of MB value.


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