Concrete and mortar slump-retaining anti-mud stabilizing agent and preparation method thereof

Abstract

The invention provides a slump-retaining anti-mud stabilizing agent for concrete and mortar and a preparation method thereof. The product is prepared by mixing unsaturated polyether, unsaturated carboxylic acid or anhydride, unsaturated carboxylic ester, unsaturated amide propanesulfonic acid, a chain transfer agent, an initiator, a reducing agent, alkali, water and the like according to a certain mass percentage. The stabilizing agent is a chemical additive applied to concrete and mortar, when the workability of the concrete or the mortar is obviously reduced due to the fact that the concrete or the mortar sand and stone materials contain excessive mud, stone powder, flocculating agents and the like, and the state of fresh concrete and mortar can be stabilized; Thus, the workability, the slump retaining property, the pumpability, the viscosity reduction property, the mud resistance, the flocculant resistance, the uniformity and the consistency of concrete or mortar are improved.

Description

technical field [0001] The invention relates to an additive for concrete and mortar and a preparation method thereof, in particular to a concrete and mortar anti-slump and anti-mud stabilization agent for resisting mud content, powder content and flocculant dosage of sand and stone and a preparation method thereof. Background technique [0002] At present, after decades of large-scale civil construction in China, the mining of natural raw materials such as sand and gravel has passed its peak period. Good-quality sand and gravel materials have become increasingly scarce. Inferior sandstone materials with high mud content and powder content and washed sand with high flocculant content, this material has a large amount of adsorption on the water reducing agent, resulting in the failure of the water reducing agent, and the concrete has poor slump retention and workability. Can not meet the normal concrete quality requirements. Therefore, the conventional product polycarboxylate...

AI Technical Summary

Problems solved by technology

[0002] At present, after decades of large-scale civil construction in China, the mining of natural raw materials such as sand and gravel has passed its peak period. Good-quality sand and gravel materials have become increasingly scarce. Inferior sandstone materials with high mud content and powder content and washed sand with high flocculant content, this material has a large amount of adsorption on the water reducing agent, resulting in the failure of the water reducing agent, and the concrete has poor slump retention and workability. Cannot meet normal concrete quality requirements

Therefore, the conventional products on the market, polycarboxylate superplasticizer and slump-retaining superplasticizer, have been unable to solve the problem.

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