Preparation method of polycarboxylic acid water reducing agent with low sensitivity on mud content of concrete

A type of polycarboxylic acid and mud content technology, which is applied in the field of construction admixtures, can solve the problems of mud content sensitivity, etc., and achieve the effects of reducing sensitivity, improving shape and branched structure, and improving adaptability
CN108192044AActive Publication Date: 2018-06-22KZJ NEW MATERIALS GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KZJ NEW MATERIALS GROUP CO LTD
Publication Date
2018-06-22
Patent Text Reader

Abstract

The invention discloses a preparation method of a polycarboxylic acid water reducing agent with low sensitivity on mud content of concrete. A silane group is introduced into a polycarboxylic acid molecular structure, the silane group and cement granules can form chemical bonding, the molecular size is increased, the polycarboxylic acid is prevented from being adsorbed by the mud with an intercalated structure, the adaptability problem of the polycarboxylic acid and the cement is improved, and the sensitivity on the change of the mud content can be reduced; and a polyether ester structure is introduced in the polycarboxylic acid molecular structure, so that the shape and the branched structure of the long side chain of the polycarboxylic acid in a concrete multi-phase system can be improved, the side chain is extended and relax, the peaceability of the concrete is improved and the sensitivity on the change of the mud content is reduced.
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Description

technical field

[0001] The invention belongs to the technical field of building admixtures, and in particular relates to a preparation method of a low-sensitivity polycarboxylate water reducer to concrete mud content. Background technique

[0002] Concrete admixtures, especially water reducers, are widely used in cement-based materials, such as cement paste, mortar and concrete, and are very necessary in the field of engineering construction and building structures. These concrete admixtures can increase the fluidity of cement-based materials and effectively improve the performance of hardened concrete such as strength and durability.

[0003] With the development of concrete in the direction of high performance and multifunctionality, concrete is required to have high workability, high strength, high durability, and can meet the application in many special cases. Compared with traditional admixtures such as naphthalene-based water-reducers and aliphatic water-reducers, pol...

Claims

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