Composite efficient water reducer and preparation method thereof

Abstract

The invention provides a composite efficient water reducer and a preparation method thereof. The composite efficient water reducer is prepared from the following components in percentage by weight: 0 to 50 percent of polycarboxylic type water-reducer, 0 to 50 percent of naphthalene-based superplasticizer, 0 to 50 percent of melamine resin water reducer, 0 to 50 percent of aliphatic water reducer, 10 to 50 percent of lignosulfonate, 0 to 50 percent of sulfamate water reducer, 0.1 to 5 percent of sodium gluconate, 0.1 to 5 percent of lauryl sodium sulfate, 0.1 to 10 percent of sodium silicate, 0.1 to 10 percent of potassium methyl silicate, 0.1 to 10 percent of sodium thiocyanate, 0.1 to 10 percent of sodium metaphosphate, 0.1 to 10 percent of triethanolamine, 0.1 to 10 percent of potassium peroxodisulfate and 10 to 65 percent of water. The composite efficient water reducer has the advantages of wide raw material source, simple production method, high production efficiency, remarkable use effect, wide application and suitability for industrial large-scale production.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a composite high-efficiency water reducer and a preparation method thereof. Background technique [0002] In recent years, with the development of urban construction, a large amount of waste concrete has been produced. In addition to the staggering cost of disposal, the huge amount of waste concrete needs to occupy a large amount of open space for storage, pollute the environment, waste cultivated land, and become a major public hazard in the city. The environmental problems caused by this are very prominent. Therefore, how to deal with these construction wastes reasonably has aroused the general concern of government departments and the public. At the same time, with the continuous mining of natural sand and gravel, natural aggregate resources tend to be exhausted, and the energy consumption and cost of transportation for mining are astonishing, and the damage to the...

AI Technical Summary

Problems solved by technology

[0004] However, due to its high mortar content, the recycled aggregate has low apparent density and high water absorption, which makes it show poor work performance and poor mechanical properties in the actual production of concrete.

The usual production method is to increase water consumption or pre-wet the aggregate, but it cannot fundamentally solve the problem of using recycled aggregate

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