Polycarboxylate superplasticizer for machine-made sand concrete

A technology of polycarboxylic acid and water reducing agent, applied in the field of polycarboxylate water reducing agent, can solve the problems of cracking durability, poor durability and increased water consumption of hardened concrete, achieve good construction performance, avoid surface cracking, and prolong maintenance effect of time
CN103664052AInactive Publication Date: 2014-03-26SHANGHAI SUNRISE POLYMER MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI SUNRISE POLYMER MATERIAL CO LTD
Publication Date
2014-03-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a polycarboxylate superplasticizer for machine-made sand concrete. The polycarboxylate superplasticizer comprises a polycarboxylic acid copolymer, a mud-resistant component, a crack-resistant component, an air entraining agent, an antifoaming agent and a retarder. The polycarboxylate superplasticizer is low in mixing amount, and enables the machine-made sand concrete, in particular the machine-made sand concrete containing high amount of mud and powder to achieve excellent initial working performance, long-term slump holding capability, keep the surface of the hardened concrete from cracking, and improve the durability of the machine-made sand concrete.
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Description

technical field

[0001] The invention relates to the field of building material additives, in particular to a polycarboxylate water reducer for machine-made sand concrete. Background technique

[0002] Concrete is one of the most important building materials in contemporary society. It is composed of cementitious materials, aggregates, water and admixtures, and the polycarboxylate water reducer with a comb structure is the most important admixture for the preparation of high-performance concrete. one of the agents. With the vigorous development of large-scale infrastructure construction, the resources of natural sand, the fine aggregate commonly used in concrete, are gradually decreasing, and the pollution and damage to the environment caused by the mining of natural sand are also becoming more and more serious, resulting in catastrophic disasters such as river bursts and embankments. Accidents also occur frequently. For the sustainable development of the environment, the co...

Claims

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