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A kind of light gypsum spray mortar

A technology for spraying mortar and gypsum, which is applied in the field of building materials, can solve problems such as cost increase, and achieve the effects of facilitating spraying construction, improving workability, and ensuring spraying strength

Inactive Publication Date: 2021-06-29
济南长兴建设商砼有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, lightweight spraying mortar has gradually developed, but due to the addition of vitrified beads, perlite and other components, the cost has increased

Method used

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  • A kind of light gypsum spray mortar

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A lightweight gypsum spraying mortar, comprising the following components: 65kg of desulfurized gypsum, 6kg of calcium dialuminate, 1.15kg of CSH gel seed crystals, 3kg of ordinary Portland cement, 14kg of modified slag ash, 10kg of heavy calcium powder, 0.5kg of nano titanium dioxide, 0.055kg of cellulose ether with a viscosity of 100,000, 0.1kg of starch ether and 0.01kg of sodium α-olefin sulfonate. Wherein the preparation method of modified slag ash is as follows:

[0036] (1) The slag ash of 50-100 mesh accounts for 20 parts by weight, 100-140 mesh accounts for 40 parts by weight, and 140-300 mesh accounts for 40 parts by weight.

[0037] (2) Pour the slag ash into the hydrofluoric acid solution with an excess concentration of 3%, and soak for 48 hours.

[0038] (3) Mix zeolite powder with a mesh number of 800-1000 mesh and quartz glass powder with a mesh number of 1000-1500 and pour them into (1) evenly, and stir slowly. Where m (zeolite powder): m (quartz glass...

Embodiment 2

[0042] A lightweight gypsum spraying mortar, including the following components: 75kg of desulfurized gypsum, 2.5kg of calcium dialuminate, 0.965kg of CSH gel seed crystals, 1kg of ordinary Portland cement, 14kg of modified slag ash, and 6kg of heavy calcium powder , 0.37kg of nano-titanium dioxide, 0.06kg of 100,000-viscosity cellulose ether, 0.1kg of starch ether and 0.005kg of sodium α-olefin sulfonate.

[0043] Wherein the preparation method of modified slag ash is as follows:

[0044](1) The slag ash of 50-100 mesh accounts for 25 parts by weight, 100-140 mesh accounts for 45 parts by weight, and 140-300 mesh accounts for 30 parts by weight.

[0045] (2) Pour the slag ash into the hydrofluoric acid solution with an excess concentration of 4%, and soak for 48 hours.

[0046] (3) Mix zeolite powder with a mesh number of 800-1000 mesh and quartz glass powder with a mesh number of 1000-1500 and pour them into (1) evenly, and stir slowly. Where m (zeolite powder): m (quartz ...

Embodiment 3

[0050] A lightweight gypsum spraying mortar, including the following components: 70kg of desulfurized gypsum, 5kg of calcium dialuminate, 0.765kg of CSH gel seed crystals, 2.5kg of ordinary Portland cement, 12kg of modified slag ash, and 9.3 kg of heavy calcium powder kg, 0.27kg of nano-titanium dioxide, 0.06kg of 100,000-viscosity cellulose ether, 0.09kg of starch ether and 0.008kg of sodium α-olefin sulfonate.

[0051] Wherein the preparation method of modified slag ash is as follows:

[0052] (1) The slag ash of 50-100 mesh accounts for 20 parts by weight, 100-140 mesh accounts for 40 parts by weight, and 140-300 mesh accounts for 40 parts by weight.

[0053] (2) Pour the slag ash into the hydrofluoric acid solution with an excess concentration of 3%, and soak for 48 hours.

[0054] (3) Mix zeolite powder with a mesh number of 800-1000 mesh and quartz glass powder with a mesh number of 1000-1500 and pour them into (1) evenly, and stir slowly. Where m (zeolite powder): m (...

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Abstract

The invention discloses a lightweight gypsum spraying mortar, which comprises the following components: desulfurized gypsum, calcium dialuminate, ordinary portland cement, CSH gel crystal seed, modified slag ash, heavy calcium powder or talc A kind of powder, nano-titanium dioxide, gypsum protein retarder, cellulose ether, starch ether and air-entraining agent. The lightweight gypsum spraying mortar prepared by the invention has strong cohesiveness, early strength and rapid hardening, and low cost. Using slag ash as a potential active lightweight aggregate can not only effectively reduce the mortar density, but also improve the later strength and prolong the service life; use calcium dialuminate and ordinary Portland cement to adjust the setting time and pH value of the cementitious material At the same time, the adaptability of the admixture is improved to ensure the spraying effect and later strength.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a lightweight gypsum spraying mortar. [0002] technical background [0003] With the further in-depth development of the construction industry and the constant changes in construction raw materials, construction materials are also continuously improved and upgraded. Spraying mortar is a type of mortar with a relatively large amount of construction mortar, because it can protect the base of the wall and increase The remarkable effect of wall beauty has been developed rapidly in recent years. Gypsum mortar is a new type of mortar that replaces cement mortar, is environmentally friendly, economical, and has extremely high use value and social benefits. Compared with traditional cement mortar, it not only has the strength of cement, but also is more environmentally friendly than cement, has strong cohesive force, is not easy to differentiate, and does not crack. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B18/06C04B20/02C04B20/12C04B111/40
CPCC04B18/06C04B20/023C04B20/12C04B28/144C04B2111/00508C04B2111/40C04B2201/20C04B2201/50C04B22/0093C04B7/02C04B22/08C04B14/28C04B22/06C04B24/383C04B24/38C04B24/16C04B20/1074Y02W30/91
Inventor 付坤付赫马莎莎汪丕明
Owner 济南长兴建设商砼有限公司
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