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Water-retaining thixotropic agent for ready-mixed mortar and preparation method thereof

A technology of ready-mixed mortar and thixotropic agent, applied in the field of building materials, can solve the problems of poor construction, poor water retention, high cost, achieve cohesion and construction smoothness, no VOC, good water retention, improve construction efficiency and The effect of engineering quality

Inactive Publication Date: 2016-04-06
江苏兆佳建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the promotion of ready-mixed mortar, the demand for mortar additives has also increased. At present, the water-retaining agent of ready-mixed mortar is mainly thickened powder and cellulose ether. The mortar mixed with thickened powder has poor water retention and low strength. It will lead to hollowing and cracking of the wall; while the mortar simply mixed with cellulose ether has the defects of poor construction, low strength and high cost

Method used

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  • Water-retaining thixotropic agent for ready-mixed mortar and preparation method thereof
  • Water-retaining thixotropic agent for ready-mixed mortar and preparation method thereof
  • Water-retaining thixotropic agent for ready-mixed mortar and preparation method thereof

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Effect test

Embodiment 1

[0015]

[0016]

[0017] The water-retaining thixotropic agent prepared according to the mass percentage specified in the above table accounts for 0.08-0.12% of the total mass of the formula raw materials, and it is applied after adding water and stirring evenly. The M5 masonry mortar is mixed with 0.1% of the total mass of water-retaining thixotropic agent, the water retention rate is 92.4%, the consistency loss rate is 20% in 2h, and the compressive strength is 7.1MPa in 28d. This ratio has good construction smoothness, sag resistance and water retention, and effectively controls hollowing and cracking. It is suitable for masonry mortar, plastering mortar and floor mortar for manual work.

Embodiment 2

[0019]

[0020] The water-retaining thixotropic agent prepared according to the mass percentage specified in the above table accounts for 0.1-0.12% of the total mass of the formula raw materials, and it is applied after adding water and stirring evenly. The M10 machine-sprayed surface mortar is mixed with 0.1% of the total mass of water-retaining thixotropic agent, the water retention rate is 94.3%, the 2h consistency loss rate is 16%, and the 28d compressive strength is 13.4MPa. The mortar prepared with this ratio has a low air content, which can significantly improve the "air blocking" phenomenon in the machine spraying process, and has good construction smoothness, sag resistance and water retention, and can effectively control hollowing and cracking. It is suitable for plastering mortar and floor mortar for machine spraying operations.

Embodiment 3

[0022]

[0023] The water-retaining thixotropic agent prepared according to the mass percentage specified in the above table accounts for 0.08-0.12% of the total mass of the formula raw materials, and it is applied after adding water and stirring evenly. The M5 masonry mortar is mixed with 0.1% of the total mass of water-retaining thixotropic agent, the water retention rate is 93.0%, the 2h consistency loss rate is 18%, and the 28d compressive strength is 6.4MPa. This ratio has good construction smoothness, sag resistance and water retention, and effectively controls hollowing and cracking. It is suitable for masonry mortar, plastering mortar and floor mortar for manual work.

[0024] At present, the water retention rate of dry powder mortar using thickened powder can barely reach 88%, and the workability is poor, and it is prone to bleeding, hollowing and cracking. It has the characteristics of high safety, smooth construction and no VOC. It is used in manual work mortar a...

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Abstract

The invention discloses a ready-mixed mortar water-retention thixotropic agent and a preparation method thereof. The mortar comprises the components of, by mass: 20-40% of cellulose ether, 10-20% of a thickener, 8-15% of re-dispersible latex powder, 0-2% of a surfactant, and 40-50% of a thixotropic agent. The components with the specified mass percentages are uniformly mixed in a mixing machine, such that the ready-mixed mortar water-retention thixotropic agent is obtained. The ready-mixed mortar water-retention thixotropic agent has the characteristics of good water retention performance, cohesiveness, construction smoothness, and no VOC. When the agent is used in manual work mortar and machine-sprayed mortar, construction efficiency and project quality can be substantially improved.

Description

technical field [0001] The invention relates to a building material, in particular to a water-retaining thixotropic agent for ready-mixed mortar and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] With the promotion of ready-mixed mortar, the demand for mortar additives has also increased. At present, the water-retaining agent of ready-mixed mortar is mainly thickened powder and cellulose ether. The mortar mixed with thickened powder has poor water retention and low strength. It will lead to hollowing and cracking of the wall; while the mortar simply mixed with cellulose ether has the defects of poor construction, low strength and high cost. Contents of the invention [0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a water-retaining thixotropic agent for ready-mixed mortar and its preparation method, which has the characteristics of good water retent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38
Inventor 张超蔡文龙钱建男
Owner 江苏兆佳建材科技有限公司
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