Carboxylic acids graft copolymer concrete strengthening agent

A graft copolymer and concrete technology, applied in the field of carboxylic acid graft copolymer, can solve the problems of unfavorable sustainable development, heavy environmental pollution and high price
CN1667009AActive Publication Date: 2005-09-14JIANGSU SOBUTE NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU SOBUTE NEW MATERIALS
Publication Date
2005-09-14

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Abstract

This invention is a carboxylic acids graft copolymer concrete bao tan agent. The procedures are that 1) single alkyl polyether or double hydroxy group polyether and their compound said by general formula (1) is grafting reacted to generate big monomer a with C=C with dyadic unsaturated carboxylic acid or anhydride in condition of acid catalyst. 2) Compound an and monomer b is compounded copolymerized with weight ratio is 70-90% and 3-30%. This invention can greatly improve the slump constant loss of traditional naphthalene system water reducing agent, and improve its dispersibility at the same time. Coagulation time of concrete doesní»t prolong, it has good plastic keeping effect to medium and low slump constant concrete or big degree of fluidity concrete. It has good adaptability to other high efficiency water reducing agent. Good degree of fluidity keeping ability is on it whether coordinated with traditional naphthalene system water reducing agent or melamine system water reducing agent or new style polyocarboxy acid system dispersibility. There is no three wastes during its procedure.
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Description

technical field

[0001] The invention belongs to the technical field of concrete admixtures in building materials, and in particular relates to a carboxylic acid graft copolymer that can be used as a high-efficiency slump-retaining agent for concrete. Background technique

[0002] With the development of transportation, hydropower, municipal and other construction projects, the gradual rise of high-span bridges, hundreds of stories of high-rise buildings, and oil drilling platforms, offshore airports, offshore cities, and submarine tunnels, the construction performance and strength of concrete The requirements for indicators and durability are getting higher and higher, and almost all of them require the use of pumped concrete, and high-efficiency water reducers are the fifth component that is indispensable for the preparation of pumped concrete. Pumping concrete requires long-distance transportation and construction under high temperature conditions, which will inevitably le...

Claims

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