Recent content by Allen

Here is the formula, P.042.5 cement: 144KG fly ash II grade:36KG yellow sand fineness around 2.0 : 820KG hydroxypropyl methyl cellulose ether :130 g K12:35g water: 154 wet density is 1698 The plastering has wall cracks in the inner layer of the construction site. The basement is intact. Workers...

If there is no problem with the cellulose ether, then think about the aggregate, such as whether the grading is reasonable, the modulus of the sand is too large, and the mud content of the sand is too high. Generally speaking, it is recommended not to add any retarder to ordinary mortar...

There is a high possibility that plaster has something wrong. It is similar to the previous alkali-aggregate reaction.

The additives retard the setting, and the water retention rate is relatively high. You’d better adjust it with the manufacturer. Generally, changing the admixture can solve the problem.