A kind of preparation method of clay mud inhibitor and its product and application

Abstract

The invention relates to a preparation method of a clay mud inhibitor, as well as a product and application thereof. The preparation method comprises the following steps of (1) heating maleated rosin,premixing the maleated rosin and polyethylene glycol, and carrying out esterification reaction to obtain an intermediate product; (2) adding anhydrous sodium carbonate into the intermediate product obtained in the step (1), continuously reacting, and obtaining the clay mud inhibitor. Since the long and widespread problem that a concrete aggregate contains mud so as to influence the concrete quality exists, the invention provides a new solution, the clay mud inhibitor obtained through the preparation method provided by the invention is a modified abietic acid polycarboxylic acid mud inhibitor,and the clay mud inhibitor is regulated to have a specific molecular weight and a structure through the preparation method, so that the sensitivity of a low polycarboxylic acid water reducing agent on a clay is effectively reduced. When the mud content of the aggregate is higher, the mud inhibitor can inhibit the aggregate from adsorbing the water reducing agent, so that the adverse effects of big additive dosage fluctuation, reduced concrete strength, instable quality, difficulty in construction and the like caused by the reason that the aggregate contains the mud can be effectively overcome, the construction quality safety is further improved, and the clay mud inhibitor has a larger application value.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a preparation method of clay silt inhibitor and its product and application. Background technique [0002] In recent years, with the in-depth research and application of polycarboxylate superplasticizers, it has been found that polycarboxylate superplasticizers have poor adaptability to concrete with high mud content and gravel, and the slump loss of freshly mixed concrete is very fast, making it difficult to guarantee Transportation, pumping and construction have become a thorny problem in the application field of polycarboxylate superplasticizer at home and abroad. From the perspective of the mechanical properties of concrete, high mud content in sand and gravel will affect the strength of concrete; from the perspective of concrete workability, it affects the slump of concrete and accelerates the loss of slump. [0003] With the acceleration of urbanization in our country, la...

AI Technical Summary

Problems solved by technology

[0004] CN102617811A discloses a preparation method of an amphoteric vinyl polymer concrete anti-mud agent. In the method, a large raw material of polyethylene glycol monohexyl ether is introduced, and the synthesized molecular weight is large, and the competitive adsorption with the water reducing agent on the clay is not strong, and the adsorption slow

However, this method is a physical method with poor durability, and the retarder component also brings uncontrollable factors to the setting time of concrete.

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