High performance concrete superplasticizer

Abstract

The invention discloses a high performance concrete superplasticizer. The formula of the high performance concrete superplasticizer is prepared from the following components in parts by weight: 20 to60 parts of acrylic polycarboxylic acid, 1 to 1.5 parts of sodium hexametaphosphate, 10 to 20 parts of wood calcium, 0.1 to 0.6 part of maltodextrin, 10 to 15 parts of phosphonobutane tricarboxylic acid and 35 to 50 parts of mirabilite. The high performance concrete superplasticizer disclosed by the invention has the advantages that the workability of concrete can be improved, the strength of theconcrete is improved, and the durability of the concrete is improved; unit cement consumption can be reduced, so that the production cost is effectively reduced and the water-reducing rate is improved; the high performance concrete superplasticizer has good economic benefits and social benefits.

Description

technical field [0001] The invention relates to a water reducer, in particular to a high-efficiency concrete water reducer. Background technique [0002] In the process of building construction, a certain amount of admixture is reasonably added to concrete, which can achieve the effects of improving the early strength of concrete or various ages, improving the workability of concrete, adjusting the setting time of concrete, reducing the heat of hydration, and reducing the amount of cement. . [0003] At present, there are many kinds of water reducing agents at home and abroad, and the most widely used are lignosulfonate-based ordinary water-reducing agents, naphthalene-based sulfonate-based high-efficiency water-reducing agents, and melamine-based high-efficiency water-reducing agents. They are compounded into a water reducing agent. The above commonly used water reducers have their own advantages and disadvantages. Lignosulfonate common water reducer is cheap, but becaus...

AI Technical Summary

Problems solved by technology

Lignosulfonate-based common water-reducing agent is cheap, but because of its low water-reducing rate, the early strength effect of concrete is not ideal

Although naphthalene sulfonate water reducer and melamine high efficiency water reducer have high water reducing rate, the early and late strength of concrete is better, but its shrinkage rate is relatively large, and the retarding effect is not obvious