Reduction-reducing crack-resisting concrete superplasticizer of graft copolymer and method for preparing the same

A technology of graft copolymer and superplasticizer, which is applied in the field of concrete structure and concrete engineering, and concrete admixture, and can solve problems such as high price, poor cement dispersion performance, and insufficient water reducing rate.
CN1844022AActive Publication Date: 2006-10-11JIANGSU SOBUTE NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU SOBUTE NEW MATERIALS
Publication Date
2006-10-11

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Abstract

Disclosed is a shrinkage-reduction anti-cracking type grafted copolymer concrete superplasticiser, which is prepared from monomer a of acroleic acid or salts, monomer b of alkoxy polyether monoacrylate, monomer c of maleic anhydride hemiester or its salts, monomer d of alpha-propenol omega-methyl polyether and monomer e of phenylethene through free radical copolymerization reaction, wherein the molar ratio of the monomer a, b, c, d and e being 1 : 0.2-0.5 : 0.10-0.25 : 0.10-0.20 : 0-0.10.
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Description

technical field

[0001] The invention belongs to the technical field of concrete structures and concrete engineering, in particular to the technical field of concrete admixtures, in particular to a preparation method and application of a shrinkage-reducing and crack-resistant polycarboxylate concrete superplasticizer. Background technique

[0002] Concrete has developed into the most important structural engineering material in the contemporary era. In 2005, my country's annual cement output exceeded 1 billion tons. The amount of cement and concrete consumed by its infrastructure construction is in the leading position in the world. The production of cement not only consumes a lot of mineral resources and energy, and produces a large amount of CO 2 , emitting a large amount of dust. The sustainable development of the building materials industry is to reduce resources and energy consumption as much as possible in the use of raw materials and the production process of materials...

Claims

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