Viscosity reduction type polycarboxylate superplasticizer used for high-strength concrete

Abstract

The invention discloses a viscosity reduction type polycarboxylate superplasticizer used for high -strength concrete. The polycarboxylate superplasticizer is prepared from, by weight, 20.0-40.0 parts of water reduction type PCE mother liquor, 2.5-5.0 parts of viscosity reduction type PCE mother liquor, 2.5-15.0 parts of slump retaining type PCE mother liquor, 0.02-0.05 part of air entraining agent, 0.02-0.05 part of antifoaming agent, 0.5-0.8 part of thickening time control agent, 0.01-0.02 part of corrosion inhibitor, 0.01-0.02 part of antiseptic and proper amount of water. According to the viscosity reduction type polycarboxylate superplasticizer, three kinds of mother liquor of the water reduction type PCE, the viscosity reduction type PCE and the slump retaining type PCE are adopted, proper evacuation time required by the high-strength concrete can be obtained by adjusting the ratio of the three kinds of mother liquor according to practical conditions of raw materials such as binding material and aggregate, and viscosity of the high-strength concrete is controlled.

Description

technical field [0001] The invention belongs to the technical field of building admixtures, in particular to a viscosity-reducing polycarboxylate water reducer for high-strength concrete. Background technique [0002] With the development needs of modern buildings with large spans, high loads, super high-rises, and complex structures, high-strength concrete, as a new building material, has the advantages of high compressive strength, strong deformation resistance, high density, and low porosity. properties, are increasingly used. The compressive strength of high-strength concrete is high, which is 4 to 6 times that of ordinary concrete, so the section of the component can be reduced, the size of the column section can be reduced, the self-weight of the building can be reduced, and the economic benefit can be improved; high-strength steel and The stress is artificially controlled to improve the flexural rigidity and crack resistance of flexural members, so more and more high...

AI Technical Summary

Problems solved by technology

In practical engineering applications, synthesis and compounding are generally required, but none of the above technical solutions involves a viscosity-reducing polycarboxylate superplasticizer for high-strength concrete

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