Early strengthening polycarboxylate superplasticizer for C30 concrete

Abstract

The invention provides an early strengthening polycarboxylate superplasticizer for C30 concrete and a preparation method. The polycarboxylate superplasticizer is prepared from the following ingredients in parts by weight: 342 to 353 parts of polyether macromonomers with the molecular weight being 4000 to 4500, 22 to 27 parts of acrylic acid, 4 to 8 parts of rigid small monomers, 2 to 5 parts of 27.5-percent industrialized hydrogen peroxide, 3.5 to 6 parts of unsaturated sulfonate, 2 to 4 parts of functional phosphate monomers, 0.4 to 0.6 part of reducing agents, 1.4 to 2.4 parts of chain expanding agents, 6 to 12 parts of neutralizers and the balance water. The total mass is 100 parts. After the preparation, the mass percentage of the finished product is 40 percent; the acid-ether ratio control range is 3.9 to 4.3. The used polyether macromonomers are prepared from amidogen ether and polyether through being proportioned according to the mass ratio of 1:6; amino groups are reasonably introduced; slight soluble gypsum is promoted to be completely dissolved into water; the hydration process of C3A is accelerated; the formation of ettringite is promoted; the early strengthening effect is achieved.

Description

technical field [0001] The invention relates to the technical field of building materials and concrete admixtures, in particular to an early-strength polycarboxylate water reducer for C30 concrete. Background technique [0002] The vigorous development of the construction industry has made concrete, an important building material, the protagonist. The progress of society has made people no longer satisfied with the slow and messy construction process. Researchers in the field of concrete are committed to creating admixtures that can effectively increase the development rate of concrete strength and at the same time improve other properties of concrete. Build better buildings over time. [0003] Ordinary early-strength water-reducing agents often ignore the workability requirements of concrete mixtures while focusing on the early strength development of concrete, so that although the early strength of concrete is improved, the workability of concrete mixtures is lost. Let t...

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Problems solved by technology

[0003] Ordinary early-strength water-reducing agents often ignore the workability requirements of concrete mixtures while focusing on the early strength development of concrete, so that although the early strength of concrete is improved, the workability of concrete mixtures is lost. Let the actual construction process encounter a lot of trouble

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