A low porosity high frost resistance gelling agent and preparation method thereof

Abstract

The invention relates to a low-porosity high-freezing-resistance gelatinizer which comprises the following components in parts by weight: 42-48 parts of superfine slag powder, 24-30 parts of silicon micropowder, 10-15 parts of expanding agent, 4-10 parts of composite water reducer, 2-5 parts of composite retarder, 2-3 parts of short steel fiber, 1-3 parts of ground calcium carbonate, 2-4 parts of microcrystalline cellulose and 1-3 parts of dioctyl sodium sulfosuccinate. The composite water reducer is composed of a polycarboxylic acid water reducer and an aliphatic water reducer in a weight ratio of (1-4):1; and the composite retarder is composed of sodium gluconate and sodium hexametaphosphate in a weight ratio of (1-4):1. The low-porosity high-freezing-resistance gelatinizer has the advantages of lower porosity, small pore size, ultrahigh strength, high durability and favorable volume stability.

Description

technical field

[0001] The invention relates to the field of building materials, in particular to a gelling agent with low porosity and high frost resistance and a preparation method thereof. Background technique

[0002] With the rapid development of the construction industry, the development of gelling agents is also changing rapidly, and at the same time, higher requirements are put forward for the performance of gelling agents. The addition of gel materials should improve the defects of concrete materials such as low compressive strength, poor ductility, and brittle failure under the action of tensile stress or impact load. It is difficult to meet the comprehensive requirements of concrete materials by using ordinary gelling agents. The gelling agent with high index requirements is prepared to adapt to the rapid development of the construction industry.

[0003] At present, concrete gelling agent is mainly aimed at improving a certain performance index of concrete, such...

Examples

preparation example Construction

[0029] The present invention also relates to a preparation method of a low porosity high frost resistance gelling agent, the steps are as follows:

[0030] (1) Mix the composite water reducer composed of polycarboxylate water reducer and aliphatic water reducer with a weight ratio of 1~4:1 and the composite retarder composed of sodium gluconate and sodium hexametaphosphate to obtain Mixture a, the mass fraction of the composite water reducer is 4 to 10 parts, and the mass fraction of the composite retarder is 2 to 5 parts;

[0031] (2) Mix 42-48 parts by mass of superfine slag powder, 24-30 parts of silicon micropowder, 10-15 parts of expansion agent, 2-3 parts of short steel fiber and 1-3 parts of heavy carbonic acid The calcium powder is mixed evenly to obtain the mixture b;

[0032] (3) Uniformly mixing the mixture a obtained in step (1) and the mixture b obtained in step (2) to obtain a gelling agent with low porosity and high frost resistance.

[0033] The present inven...

Embodiment 1

[0044] A low porosity and high frost resistance gelling agent, consisting of 42 parts by mass of superfine slag powder, 30 parts of silicon micropowder, 15 parts of expansion agent, 2 parts of polycarboxylate water reducer and 2 parts of Composite shrinking agent composed of aliphatic water reducer, composite retarder composed of 1 part of sodium gluconate and 1 part of sodium hexametaphosphate, 2 parts of short steel fiber, 1 part of heavy calcium carbonate powder, 2 parts Microcrystalline cellulose and 3 parts of dioctyl sodium sulfosuccinate.

Embodiment 2

[0046] A low porosity and high frost resistance gelling agent, consisting of 48 parts by mass of superfine slag powder, 24 parts of silicon micropowder, 10 parts of expansion agent, 8 parts of polycarboxylate water reducer and 2 parts of Composite shrinking agent composed of aliphatic water reducer, composite retarder composed of 4 parts of sodium gluconate and 1 part of sodium hexametaphosphate, 3 parts of short steel fiber, 3 parts of heavy calcium carbonate powder, 4 parts microcrystalline cellulose and 1 part of dioctyl sodium sulfosuccinate.

technical field

[0001] The invention relates to the field of building materials, in particular to a gelling agent with low porosity and high frost resistance and a preparation method thereof. Background technique

[0002] With the rapid development of the construction industry, the development of gelling agents is also changing rapidly, and at the same time, higher requirements are put forward for the performance of gelling agents. The addition of gel materials should improve the defects of concrete materials such as low compressive strength, poor ductility, and brittle failure under the action of tensile stress or impact load. It is difficult to meet the comprehensive requirements of concrete materials by using ordinary gelling agents. The gelling agent with high index requirements is prepared to adapt to the rapid development of the construction industry.

[0003] At present, concrete gelling agent is mainly aimed at improving a certain performance index of concrete, such...

Examples

preparation example Construction

[0029] The present invention also relates to a preparation method of a low porosity high frost resistance gelling agent, the steps are as follows:

[0030] (1) Mix the composite water reducer composed of polycarboxylate water reducer and aliphatic water reducer with a weight ratio of 1~4:1 and the composite retarder composed of sodium gluconate and sodium hexametaphosphate to obtain Mixture a, the mass fraction of the composite water reducer is 4 to 10 parts, and the mass fraction of the composite retarder is 2 to 5 parts;

[0031] (2) Mix 42-48 parts by mass of superfine slag powder, 24-30 parts of silicon micropowder, 10-15 parts of expansion agent, 2-3 parts of short steel fiber and 1-3 parts of heavy carbonic acid The calcium powder is mixed evenly to obtain the mixture b;

[0032] (3) Uniformly mixing the mixture a obtained in step (1) and the mixture b obtained in step (2) to obtain a gelling agent with low porosity and high frost resistance.

[0033] The present inven...

Embodiment 1

[0044] A low porosity and high frost resistance gelling agent, consisting of 42 parts by mass of superfine slag powder, 30 parts of silicon micropowder, 15 parts of expansion agent, 2 parts of polycarboxylate water reducer and 2 parts of Composite shrinking agent composed of aliphatic water reducer, composite retarder composed of 1 part of sodium gluconate and 1 part of sodium hexametaphosphate, 2 parts of short steel fiber, 1 part of heavy calcium carbonate powder, 2 parts Microcrystalline cellulose and 3 parts of dioctyl sodium sulfosuccinate.

Embodiment 2

[0046] A low porosity and high frost resistance gelling agent, consisting of 48 parts by mass of superfine slag powder, 24 parts of silicon micropowder, 10 parts of expansion agent, 8 parts of polycarboxylate water reducer and 2 parts of Composite shrinking agent composed of aliphatic water reducer, composite retarder composed of 4 parts of sodium gluconate and 1 part of sodium hexametaphosphate, 3 parts of short steel fiber, 3 parts of heavy calcium carbonate powder, 4 parts microcrystalline cellulose and 1 part of dioctyl sodium sulfosuccinate.

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