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Dry-mixed plastering mortar mixed with Bayer process red mud and its application method

A Bayer red mud and plastering mortar technology, which is applied in the field of building materials, can solve the problems of land occupation, soil and water pollution, etc., and achieve the effects of good cohesion, good fluidity, and improved water retention

Inactive Publication Date: 2015-07-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, domestic Al 2 o 3 Most of the factories transport red mud to the storage yard, relying on valleys or digging farmland to build dams for wet storage, occupying a large amount of land resources and causing soil and water pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1, a dry-mixed plastering mortar mixed with Bayer red mud, according to ordinary Portland cement 100, Bayer red mud 15, fly ash 15, cellulose ether 0.05, latex powder 1, modified concave-convex The weight ratio of stick clay 3, river sand 390 is prepared. According to 15% of the total mass of the dry-mixed plastering mortar, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 2

[0041] Example 2, a dry-mixed plastering mortar mixed with Bayer red mud, according to ordinary Portland cement 100, Bayer red mud 25, fly ash 25, cellulose ether 0.10, latex powder 2, modified concave-convex The weight ratio of stick clay 6, river sand 450 is prepared. According to 18% of the total mass of the dry-mixed plastering mortar, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 3

[0042] Example 3, a dry powder plastering mortar mixed with Bayer process red mud, according to ordinary Portland cement 100, Bayer process red mud 40, fly ash 40, cellulose ether 0.15, latex powder 4, modified attapulgite The weight ratio of soil 9, river sand 540 is prepared. According to 20% of the total mass of the dry-mixed plastering mortar, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

[0043] Table 1 Example performance test results

[0044] Performance Example 1 Example 2 Example 3 Consistency (mm) 92 94 90 Water retention rate (%) 93.2 93.9 94.6 Bond strength (MPa) 0.9 0.9 0.8 28d compressive strength (MPa) 21.3 20.3 19.3 28d shrinkage rate (%) 0.046 0.042 0.048

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PUM

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Abstract

The invention belongs to the technical field of building materials and particularly relates to Bayer-process red mud doped dry-mixed plastering mortar and a use method thereof. The plastering mortar is prepared from ordinary silicate cement, Bayer-process red mud, fly ash, cellulose ether, latex powder, modified attapulgite and river sand. The plastering mortar is prepared through taking the ordinary silicate cement, the Bayer-process red mud and the fly ash as cementing materials, taking the cellulose ether, the latex powder and the modified attapulgite as mortar water retention and thickening materials and taking the river sand as aggregate, and has the characteristics of good fluidity, good water retention, good cohesiveness, good strength development, low shrinkage, no cracking, good durability and the like. The plastering mortar is applicable to the plastering of buildings and constructed structure masonry and the plastering of the internal / external walls and ceilings of the buildings. According to the plastering mortar and the use method thereof, the Bayer-process red mud can be effectively utilized, and the added value of the Bayer-process red mud is increased, so that the social benefit is improved; meanwhile, the production cost of the plastering mortar is reduced, so that the economic benefit is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a dry-mixed plastering mortar mixed with Bayer process red mud and a use method thereof. Background technique [0002] With the rapid development of the construction industry, higher requirements are put forward for the stable quality of building materials and energy conservation and environmental protection. As one of the most important building materials, the advent of ready-mixed mortar (that is, commercial mortar) solves the problems of high labor intensity, unstable quality, low construction efficiency, and pollution of the surrounding environment caused by on-site preparation and mixing of traditional mortar. Ready-mixed mortar is divided into dry-mixed mortar and wet-mixed mortar according to the supply type. At present, most dry-mixed plastering mortars on the market are prone to cracking, large shrinkage, and high cost. These problems limit the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/30
CPCY02W30/91
Inventor 孙振平孙栀子
Owner TONGJI UNIV
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