With the wide application of polycarboxylate additive,more and more application problems presented in front of us.today we will discuss what are these problems and how to solve these problems.

1,how much water and cement we should add after using polycarboxylate additive

Polycarboxylate additive has water reducing ratio of 30%,with cement saving of 20% with polycarboxylate dosage of 0.3%-0.6%.

After add polycarboxylate additive,we should decress used water quantity of 30% and decress cement used quantity by 20%.

2,with using of water reducer type polycarboxylate additive,concrete drys very fast even mix use sodium gluconate.

Obviously,in this condition,only sodium gluconate can not solve the dry problem.we have more professional additive to extend concrete workability time,that is slump retention type polycarboxlate additive.

we should mix use water reducer type and slump retention type polycarboxylate additive at mixing ratio of 7:3 or 6:4 or even 5:5.after mixing use,concrete workability time will be highly extened.

3,in which condition,we should mix use water reducer type and slump retention type polycarboxylate additive?

Firstly,when mud content is high in your concrete material.

Secondly,when you need longer time concrete workability.

Suggest mixing ratio is 8:2 or 7:3 or 6:4,etc.

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