A double-mixed wet-mixed mortar additive

A wet-mixed mortar and additive technology, which is applied in the field of building material admixtures, can solve the problems affecting the shaping and strength performance of wet-mixed mortar, poor composite performance between admixtures, and low engineering applicability, so as to improve the strength performance and reduce the Cracks, the effect of improving the bonding force

Active Publication Date: 2022-06-28
上海曼瓦匠实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, poor compound performance and insufficient dissolution between admixtures often occur, resulting in a decline in actual effect, which eventually affects the shaping and strength properties of wet-mixed mortar, and the engineering applicability is not high.

Method used

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  • A double-mixed wet-mixed mortar additive
  • A double-mixed wet-mixed mortar additive
  • A double-mixed wet-mixed mortar additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A double-mixed wet-mix mortar additive is prepared from the following raw materials in parts by weight: component A includes 8 parts of a water-retaining agent, 5 parts of a thickener, 1 part of a plastic-preserving aid, 1.5 parts of a strength enhancing component, and a primer. 1 part of gas component; B component includes 10 parts of polycarboxylate water reducer, 5 parts of retarder, and 0.1 part of preservative.

[0031] The water-retaining agent is hydroxypropyl methylcellulose.

[0032] The thickener is sodium carboxymethyl cellulose.

[0033] The retarder is sodium gluconate.

[0034] The air-entraining component is sodium rosin.

[0035] The preservative is sodium benzoate.

[0036] The preparation method of the plastic preservation aid is as follows: weighing 3g of starch, 1g of sodium alginate and 1g of polyvinyl alcohol, adding 80g of distilled water, heating and stirring at a constant temperature of 60°C; after stirring for 10min, adding 5g of acrylamide ...

Embodiment 2

[0040] A double-mixed wet-mix mortar additive is prepared from the following raw materials in parts by weight: component A includes 8 parts of a water-retaining agent, 6 parts of a thickener, 2 parts of a plastic-preserving aid, 2 parts of a strength enhancing component, and a primer. The gas component is 2 parts; the B component includes 10 parts of polycarboxylate water reducer, 6 parts of retarder, and 0.1 part of preservative.

[0041] The water-retaining agent is hydroxyethyl cellulose ether.

[0042] The thickener is starch.

[0043] The retarder is sucrose.

[0044] The air-entraining component is sodium rosin.

[0045] The preservative is potassium sorbate.

[0046] The preparation method of the plastic-preserving aid is as follows: weighing 5g of starch, 3g of sodium alginate and 3g of polyvinyl alcohol, adding 80g of distilled water, heating and stirring at a constant temperature of 70°C; after stirring for 15min, adding 9g of acrylamide and 6g of acrylic acid wa...

Embodiment 3

[0050] A double-mixed wet-mix mortar additive is prepared from the following raw materials in parts by weight: component A includes 10 parts of a water-retaining agent, 6 parts of a thickener, 2 parts of a plastic-preserving aid, 3 parts of a strength enhancing component, and 3 parts of a primer. The gas component is 3 parts; the B component includes 12 parts of polycarboxylate water reducer, 7 parts of retarder, and 0.2 part of preservative.

[0051] The water-retaining agent is hydroxypropyl methylcellulose and hydroxyethyl cellulose ether mixed in a mass ratio of 1:1.

[0052] The thickener is polyvinyl alcohol.

[0053] The retarder is citric acid.

[0054] The air-entraining component is sodium rosin.

[0055] The preservative is sodium benzoate.

[0056] The preparation method of the plastic-preserving aid is as follows: weighing 5g of starch, 3g of sodium alginate and 3g of polyvinyl alcohol, adding 80g of distilled water, heating and stirring at a constant temperatu...

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Abstract

The invention discloses a double-mixed wet-mixed mortar additive, which belongs to the technical field of building material admixtures. The additive of the present invention is prepared from the following raw materials by weight: Component A includes 8-13 parts of water-retaining agent, 5-8 parts of thickener, 1-3 parts of plastic-retaining auxiliary agent, 1.5-4.5 parts of strength enhancing component, Air-entraining component 1-3 parts; B component includes polycarboxylate superplasticizer 10-15 parts, retarder 5-10 parts, preservative 0.1-0.2 parts. At the dosage of 0.3%-0.5% of the additive of the present invention, the water retention rate can reach 93.5%, the 28-day compressive strength can be increased by 19.5Mpa, and the strength performance is greatly improved. According to the requirements of use, the addition of component B can be changed to make the mortar The plastic retention time can be adjusted within 24 hours, which greatly prolongs the operation time of wet-mixed mortar, and has a strong promotion and application value.

Description

technical field [0001] The invention belongs to the technical field of building material admixtures, in particular to a double-mixed wet-mix mortar additive. Background technique [0002] The use of traditional self-mixing mortar has been strictly restricted due to its poor workability, difficult to guarantee quality, high construction intensity of workers and serious environmental pollution. Compared with traditional on-site mixed mortar, ready-mixed mortar has the advantages of high quality, stable performance, low labor intensity of workers, and low degree of environmental pollution, which is conducive to civilized construction, so it has a wider application prospect. Ready-mixed mortar includes dry-mixed mortar and wet-mixed mortar, of which dry-mixed mortar can also be called dry powder or dry mix, etc. It is composed of cementitious materials, fine aggregates, and some admixtures and additives. Solid mixed materials, dry powder or granular solids made by dry mixing pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C08F261/04C08F251/00C08F220/06C08F220/56
CPCC04B40/0039C08F261/04C08F251/00C08F220/06C08F220/56C04B24/383C04B24/38C04B24/2623C04B24/2652C04B24/34C04B24/24C04B24/06C04B24/10C04B22/16C04B24/04
Inventor 薛俊书王继方卢国栋
Owner 上海曼瓦匠实业有限公司
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