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

A Bayer process red mud and masonry mortar technology, applied in the field of building materials, can solve problems such as occupation of land resources, soil and water pollution, etc., and achieve the effects of improving economic benefits, good strength development, and alleviating shortages

Inactive Publication Date: 2015-10-21
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

[0047] Example 1, a dry-mixed masonry mortar mixed with Bayer red mud, according to ordinary portland cement 100, Bayer red mud 15, fly ash 10, slag powder 10, cellulose ether 0.05, latex powder 1 , polyacrylamide 0.05, water reducing agent 0.05, river sand 400 weight ratio prepared. Add water to 10% of the total mass of the dry-mixed masonry mortar and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 2

[0048] Example 2, a dry-mixed masonry mortar mixed with Bayer red mud, according to ordinary portland cement 100, Bayer red mud 30, fly ash 20, slag powder 15, cellulose ether 0.08, latex powder 2 , Polyacrylamide 0.30, water reducing agent 0.10, river sand 480 weight ratio prepared. According to 12% of the total mass of dry-mixed masonry mortar, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 3

[0049] Example 3, a dry powder masonry mortar mixed with Bayer red mud, according to ordinary portland cement 100, Bayer red mud 35, fly ash 25, slag powder 25, cellulose ether 0.15, latex powder 4, The weight ratio of polyacrylamide 0.45, water reducing agent 0.25, and river sand 550 is prepared. Add water to 15% of the total mass of the dry-mixed masonry mortar and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

[0050] Table 1 Example performance test results

[0051] Performance Example 1 Example 2 Example 3 Consistency (mm) 80 78 75 Water retention rate (%) 93.2 93.9 94.6 Bond strength (MPa) 0.8 0.9 0.8 28d compressive strength (MPa) 30.1 32.4 28.9 28d shrinkage rate (%) 0.046 0.042 0.048

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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-blending masonry mortar and a using method thereof. The bayer process red mud-doped dry-blending masonry mortar comprises ordinary Portland cement, bayer process red mud, pulverized fuel ash, slag powder, cellulose ether, emulsion powder, ammonium polyacrylate, a water reducing agent and river sand. The bayer process red mud-doped dry-blending masonry mortar has the characteristics of good mobility, good water-retaining property, good adhesion, good strength development, small shrinkage, good durability and the like. The bayer process red mud-doped dry-blending masonry mortar is suitable for the bricklaying project of various brickworks for interior and exterior walls of buildings. The bayer process red mud-doped dry-blending masonry mortar has the advantages that the bayer process red mud can be effectively utilized, the added value of the bayer process red mud is increased, and the social benefits are improved; and meanwhile, the production cost of the masonry mortar is reduced, and the economic benefits are improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to dry-mixed masonry mortar mixed with Bayer process red mud and its application method. 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 masonry mortars on the market have poor water retention, large shrinkage, and high cost. These problems limit the prom...

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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