Modified polycarboxylic high performance water reducer and its production method and application method

Abstract

The invention relates to the technical field of water reducers and provides a modified polycarboxylic high performance water reducer and its production method and application method. The water reducer is prepared from the following raw materials: methallyl alcohol polyoxyethylene ether, isoamylene alcohol polyoxyethylene ether, acrylic acid, methacrylic acid, maleic anhydride, hydrogen peroxide, ammonium persulfate and water. The water reducer provided in the invention has the advantages of non-toxicity, environmental friendliness, cheap and easily available raw materials, easily controllablereaction conditions, simple operation and easy storage and transportation, so popularization and application of the water reducer are facilitated; moreover, the water reducer has a high water-reducing rate, low production cost and high cost performance; the water reducer is favorable for ensuring volume stability and durability of concrete and especially applicable to preparation of high performance concrete with durability as a core characteristic of the concrete and can particularly meet requirements for preparation of concrete which is used for construction of a nuclear power station.

Description

technical field [0001] The invention relates to the technical field of water reducers, and relates to a modified polycarboxylate high-performance water reducer, a production method and a use method thereof. Background technique [0002] Concrete is a widely used material in civil engineering, construction, water conservancy and high-speed railway projects. The newly built commercial concrete centralized mixing plants in major cities in China can provide stable and high-quality concrete, which will undoubtedly speed up the progress of construction and improve engineering quality. quality. With the development of commercial concrete, the technology of concrete admixture has been promoted. Concrete admixture has become an indispensable and useful component in concrete. It plays a central role in concrete production technology and is the key to determine the quality of concrete. As an important concrete admixture, high-efficiency water reducer can not only greatly improve the m...

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned existing known polycarboxylate-based high-performance concrete water-reducing agent has a very complicated production process, harsh reaction conditions are difficult to control, and the reaction requires high equipment, which is not conducive to industrial production.

In addition, the preparation process of some existing known polycarboxylate superplasticizers involves using toluene as a solvent. Toluene is a toxic organic solvent, which is harmful to the environment and human body.

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