Gypsum-based pouring mortar capable of preventing alkaline return and preparation method thereof

A mortar material and gypsum-based technology, applied in the field of building materials, can solve problems such as appearance quality impact and difficulty in removal, and achieve the effects of saving building load-bearing structures and foundation costs, improving comfort, and inhibiting efflorescence

Inactive Publication Date: 2018-07-24
深圳摩盾环保新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These salts generally go away with the action of external moisture such as rain and snow, but they are not easy to remove in some corners and other corners, which have a great impact on the appearance quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A gypsum-based pouring mortar material for preventing alkali reversion, prepared from the following raw materials in parts by weight: 70kg of gypsum, 28kg of fly ash, 1kg of light minerals, 0.05kg of water retaining agent, 0.01kg of alkali inhibitor, and 0.01kg of retarder kg.

[0037] The gypsum is mixed with desulfurized gypsum, phosphogypsum, fluorine gypsum and natural gypsum.

[0038] The fly ash is a by-product of coal combustion in a coal power plant, and is a powder collected from the flue gas of a pulverized coal furnace in a coal power plant. It requires fly ash of grade three or above, and its natural bulk density should not be greater than 0.8g / cm3. The particle size is 0.3-1.5mm, closed cell particles.

[0039] The light mineral is a mixture of expanded perlite, vitrified microbeads and ceramsite.

[0040] The water-retaining agent is a composite water-retaining agent, which is hydroxyethyl cationic cellulose ether, hydroxypropyl cationic cellulose ether,...

Embodiment 2

[0054] A gypsum-based pouring mortar material for preventing alkali reversion, prepared from the following raw materials in parts by weight: 70kg of gypsum, 29kg of fly ash, 2kg of light minerals, 0.1kg of water retaining agent, 0.03kg of alkali inhibitor, and 0.03kg of retarder kg.

[0055] The gypsum is a mixture of desulfurized gypsum and phosphogypsum.

[0056] The fly ash is a by-product of coal combustion in a coal power plant, and is a powder collected from the flue gas of a pulverized coal furnace in a coal power plant. It requires fly ash of grade three or above, and its natural bulk density should not be greater than 0.8g / cm3. The particle size is 0.3-1.5mm, closed cell particles.

[0057] The light mineral is expanded perlite.

[0058] The water-retaining agent is a composite water-retaining agent, which is hydroxyethyl cationic cellulose ether, hydroxypropyl cationic cellulose ether, hydroxypropyl cationic starch ether, cationic starch ether, and bamboo charcoal ...

Embodiment 3

[0072] A gypsum-based pouring mortar material for preventing alkali return, prepared from the following raw materials in parts by weight: 70kg of gypsum, 30kg of fly ash, 3kg of light minerals, 0.2kg of water retaining agent, 0.05kg of alkali inhibitor, and 0.05kg of retarder kg.

[0073] The gypsum is desulfurized gypsum.

[0074] The fly ash is a by-product of coal combustion in a coal power plant, and is a powder collected from the flue gas of a pulverized coal furnace in a coal power plant. It requires fly ash of grade three or above, and its natural bulk density should not be greater than 0.8g / cm3. The particle size is 0.3-1.5mm, closed cell particles.

[0075] The light minerals are vitrified microspheres.

[0076] The water-retaining agent is a composite water-retaining agent, which is hydroxyethyl cationic cellulose ether, hydroxypropyl cationic cellulose ether, hydroxypropyl cationic starch ether, cationic starch ether, and bamboo charcoal powder in a mass ratio of ...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a gypsum-based pouring mortar capable of preventing alkaline return and a preparation method thereof. The gypsum-based pouring mortar has the advantages that a water retention agent and an alkaline inhibitor are added into the gypsum to improve, and the microcrystalline cellulose is jointly used with amixed water retention agent, so that the synergistic function is realized, the usage amount is reduced, and the cost is reduced; by adopting the mixed water retention agent and the alkaline inhibitor,the alkalization of the gypsum is inhibited, and the strength of the gypsum is improved; the weight is light, the fireproof and flame-retardant properties are realized, and the appearance of a wall surface is attractive.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a gypsum-based pouring mortar for preventing alkali return and a preparation method thereof. Background technique [0002] The on-site mobile pouring non-load-bearing gypsum wall application technology is a new construction technology developed to solve the stubborn problems existing in the existing interior wall masonry. Using this technology can greatly reduce production costs and shorten the construction period. The poured wall has good integrity, no cracks, flat and smooth, no plastering after one-time molding, light weight, heat preservation, sound insulation, fire prevention, and the material has no volatilization, no radiation, no insects, and can breathe and adjust humidity independently. The living comfort is high, and the construction speed is more than three times higher than that of similar technologies. At the same time, this technology saves e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/20C04B111/70
CPCC04B28/14C04B28/142C04B28/143C04B28/144C04B2111/2023C04B2111/70C04B2201/50C04B11/26C04B11/00C04B18/08C04B14/185C04B14/22C04B18/027C04B24/383C04B24/38C04B14/022C04B14/06C04B2103/50C04B22/142C04B24/226C04B24/123C04B24/34C04B18/248C04B24/10C04B22/16C04B24/281C04B14/04C04B22/002
Inventor 冯有愉周勤冯婷
Owner 深圳摩盾环保新材料有限公司
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