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Superplasticizer applications
Class:news Author:guanli Date:2016-6-14 9:40:48
Suitable dosage 1) superplasticizer are: air-entraining type such as methyl naphthalene, polycyclic aromatic anthracene and other content is 0.5% to 1.0%, the amount of cement; non-air entraining such as melamine resin-based, naphthalene superplasticizer dosage can be between 0.3% to 5% choice, content is 0.7% to 1.0%, subject to the steam curing process precast applications, the dosage should be reduced appropriately.
2) superplasticizer incorporated as a solution is appropriate, but the solution of the water should be deducted from the total water consumption.
3) recommended method commonly used is added together with the mixing water (added later to the initial part of the mixing water).
4) composite superplasticizer composition different brand very much, if applicable must be investigated by the test match. Superplasticizer also because of cement, fineness, mineral composition differences exist on the adaptability of cement, after the test are advised to use.
5) superplasticizer except amino acids, graft copolymers, concrete slump loss are great, 30min can lose 30% to 50%, the use shall be noted.
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