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Interface mortar with ardealite-based hydraulicity composite cementing material as cementing material

A composite cementitious material and interface mortar technology, applied in the field of building materials, can solve problems such as serious harm to the atmosphere, soil and groundwater, unfavorable people, harmonious development of the environment and society, loss of land resources, etc., to improve durability, flow Good performance, uniform slurry effect

Inactive Publication Date: 2018-09-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the phosphogypsum in our country is still piled in the open air and dumped into the sea. It not only occupies a large amount of land, pollutes the water body, but also seriously endangers the surrounding atmosphere, soil and groundwater. The acid and other harmful substances contained in it are likely to cause serious damage to the surrounding environment. Destruction, the stockpiling problem of phosphogypsum has reached the point where it needs to be solved urgently, and it has brought immeasurable losses to the survival and development of enterprises, which is not conducive to the harmonious development of people, the environment and society, and caused the loss of land resources and damage

Method used

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  • Interface mortar with ardealite-based hydraulicity composite cementing material as cementing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062]Example 1, an interface mortar using phosphogypsum-based hydraulic composite cementitious material as a cementitious material, according to phosphogypsum 100, slag powder 100, fly ash 25, metakaolin 15, copper tailings slag powder 15, red mud 2 , 42.5 grade ordinary Portland cement 15, aluminate cement 8, quartz sand 200, quartz powder 120, twill stone powder 40, calcium-based bentonite 10, polycarboxylate superplasticizer 0.50, cellulose ether 0.2, latex powder 10 Formulated with a weight ratio. When in use, add water and stir evenly according to 20% of the total weight of the material. The performance test results are shown in Table 1.

Embodiment 2

[0063] Example 2, a kind of interface mortar using phosphogypsum-based hydraulic composite cementitious material as cementing material, according to phosphogypsum 100, slag powder 150, fly ash 20, metakaolin 35, copper tailings slag powder 30, red mud 6 , 52.5 grade ordinary Portland cement 35, aluminate cement 5, quartz sand 800, quartz powder 60, twill stone powder 90, calcium-based bentonite 20, polycarboxylate water reducer 2.0, cellulose ether 0.1, latex powder 15 Formulated with a weight ratio. When in use, add water to 21% of the total weight of the material and stir evenly. The performance test results are shown in Table 1.

Embodiment 3

[0064] Example 3, a kind of interface mortar using phosphogypsum-based hydraulic composite cementitious material as cementing material, according to phosphogypsum 100, slag powder 50, fly ash 60, metakaolin 45, copper tailings slag powder 50, red mud 18 , 42.5 grade ordinary Portland cement 5, aluminate cement 10, quartz sand 400, quartz powder 150, twill stone grain powder 60, calcium-based bentonite 5, polycarboxylate superplasticizer 1.5, cellulose ether 0.4, latex The weight ratio of powder 5 is formulated. When in use, add water to 25% of the total weight of the material and stir evenly. The performance test results are shown in Table 1.

[0065] Table 1 Example performance test results

[0066]

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Abstract

The invention belongs to the technical field of building materials and particularly relates to interface mortar with an ardealite-based hydraulicity composite cementing material as a cementing material. The interface mortar is composed of ardealite, a slag powder, coal ash, metakaolin, a copper tailing slag powder, red mud, ordinary Portland cement, aluminate cement, quartz sand, a quartz powder,chesterite, calcium bentonite, a polycarboxylate-type water reducing agent, cellulose ether and latex powder. By adopting the interface mortar, the binding property of a base wall and a heat preservation layer in a wall heat preservation system can be effectively improved, the peeling risk of the heat preservation layer of a building wall can be reduced, and environment security problems caused bypiling of industrial ardealite can be also solved. When the interface mortar is produced, a great amount of industrial solid wastes such as non-calcined ardealite, coal ash, copper tailing slag powder and red mud are used, so that the interface mortar has the outstanding advantages of being low in energy consumption, low in cost, low in emission, and the like. The interface mortar is applied to heat preservation systems of various building walls, and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an interface mortar using a phosphogypsum-based hydraulic composite gelling material as a cementing material. Background technique [0002] At present, the annual discharge of phosphogypsum in my country has reached about 50 million tons. Due to the bottleneck of resource utilization technology, the cumulative stockpiles have exceeded 200 million tons. The stockpiling of phosphogypsum has seriously affected the ecological environment of various regions, especially in Yunnan, Phosphate and compound fertilizer bases in Guizhou, Hubei and Sichuan. Most of the phosphogypsum in our country is still piled in the open air and dumped into the sea. It not only occupies a large amount of land, pollutes the water body, but also seriously endangers the surrounding atmosphere, soil and groundwater. The acid and other harmful substances contained in it are likely to cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2111/28C04B2201/50C04B7/02C04B18/0445C04B18/12C04B18/0409C04B14/104C04B14/106C04B14/06C04B14/04C04B24/26C04B24/383C04B2103/302
Inventor 庞敏孙振平
Owner TONGJI UNIV
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