A high-efficiency water reducer for block polycarboxylate concrete and its preparation method

A high-efficiency water reducer and polycarboxylic acid technology, applied in the field of concrete admixtures, can solve the problems of limited development space and difficulty in meeting the new and higher requirements of concrete, and achieve improved fluidity, narrow molecular weight distribution, and molecular weight controllable effect
CN103482897BActive Publication Date: 2015-08-05JIANGSU SOBUTE NEW MATERIALS +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU SOBUTE NEW MATERIALS
Publication Date
2015-08-05

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Abstract

The invention provides a block poly-carboxylic acid concrete high-efficiency water reducing agent with an ordered structure and a preparation method thereof. The block poly-carboxylic acid is prepared by using atom transfer radical polymerization, the structural regularity and the molecular weight distribution of the poly-carboxylic acid are controlled effectively, and the water reducing agent is used in a cement dispersing process. By adoption of the block poly-carboxylic acid concrete high-efficiency water reducing agent and the preparation method thereof, the problems of uncontrollable molecular weight of the poly-carboxylic acid, wider molecular weight distribution, un-designable molecular structure and the like are solved.
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Description

technical field

[0001] The invention relates to the technical field of concrete admixtures in building materials, in particular to a block polycarboxylic acid that can be used as a high-efficiency water reducer for concrete and a preparation method thereof. Background technique

[0002] Concrete is the most common building material. With the continuous development of science and technology, people's requirements for the function and quality of building structures have gradually increased. Therefore, concrete admixtures have emerged as the times require. Concrete admixture is a material added before or during concrete mixing to improve the performance of freshly mixed (or) hardened concrete. With the progress of society and the development of science and technology, there are more and more types of concrete admixtures, which are divided into four categories according to their main functions: (1) Admixtures to improve the rheological properties of concrete mixtures, including ...

Claims

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