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A kind of gypsum-based sandless mold machine-sprayed lightweight plastering material and preparation method thereof

A sand molding machine and gypsum-based technology, which is applied in the field of building materials, can solve the problems of reducing the conditions for later maintenance, can not be repaired repeatedly for a long time, and does not solve the problems of gypsum machine spraying, etc., and achieves the effects of reducing labor costs, saving self-weight, and light weight

Active Publication Date: 2018-10-23
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

[0010] Due to the characteristics of gypsum, it is easy to cause quality problems such as hollowing, cracking, and falling off after construction. In addition, repeated long-term repairs cannot be repeated during the construction process, so as to avoid poor surface perception caused by turning over the skin, resulting in uneven wall quality after plastering
However, when the existing technology solves the problem of using gypsum for machine-spraying construction, it does not solve the problem that gypsum machine-spraying reduces the strength of gypsum, or the construction conditions are strict, and it is necessary to clean up the dust, dirt, oil stains, etc. on the surface of the base. After repairing defects such as reserved holes, control the humidity of the wall, control the construction water to be clean, or avoid vibration, collision, freezing, and sun exposure during the later period of condensation and hardening, so as to ensure that the light gypsum plastering slurry forms sufficient strength and increases construction difficulty
[0011] Based on the above analysis, this application intends to invent a light-weight plastering machine spraying gypsum material, which can simultaneously solve the problem of gypsum retardation, increase the strength of gypsum to meet the needs of special construction conditions, and reduce the requirements for construction walls during machine spraying. And the requirements for water quality, solve quality problems such as hollowing, cracking, and falling off after construction, and reduce the conditions for later maintenance

Method used

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  • A kind of gypsum-based sandless mold machine-sprayed lightweight plastering material and preparation method thereof
  • A kind of gypsum-based sandless mold machine-sprayed lightweight plastering material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A gypsum-based sandless machine-sprayed lightweight plastering material, consisting of the following raw materials in parts by mass: 60g of hemihydrate gypsum, 0g of fly ash, 3g of expanded perlite, 0g of Portland cement, 0.17g of modified cellulose ether, 0.024g retarder, 0.3g thixotropic lubricant.

[0030] The hemihydrate gypsum is made by mixing desulfurized gypsum, phosphogypsum, natural gypsum and the like.

[0031] The modified cellulose ether is hydroxypropyl methylcellulose.

[0032] The retarder is composed of the following raw materials in parts by mass: 0.8 g of amino polyoxymethyl calcium salt, 0.1 g of borax, 0.01 g of sodium hexametaphosphate, and 0.01 g of mannitol.

[0033] The thixotropic lubricant is modified magnesium aluminum silicate.

[0034] The method comprises the following preparation steps: weighing each raw material component, stirring, adding to a hopper of a gypsum spraying machine, and adjusting the amount of water.

[0035] Said adjus...

Embodiment 2

[0037] A gypsum-based sandless machine-sprayed lightweight plastering material, which consists of the following raw materials in parts by mass: 70g of hemihydrate gypsum, 10g of fly ash, 10g of expanded perlite, 3g of Portland cement, 0.17g of modified cellulose ether, 0.024g retarder, 0.5g thixotropic lubricant.

[0038] The hemihydrate gypsum is desulfurized gypsum.

[0039] Further, the modified cellulose ether is hydroxyethyl methylcellulose.

[0040] The retarder is composed of the following raw materials in parts by mass: 1.0 g of amino polyoxymethyl calcium salt, 0.13 g of borax, 0.02 g of sodium hexametaphosphate, and 0.015 g of mannitol.

[0041] The thixotropic lubricant is modified magnesium aluminum silicate.

[0042] The method comprises the following preparation steps: weighing each raw material component, stirring, adding to a hopper of a gypsum spraying machine, and adjusting the amount of water.

[0043] Said adjustment of water volume is to add water to a co...

Embodiment 3

[0045] A gypsum-based sandless machine-sprayed lightweight plastering material, which is composed of the following raw materials in parts by mass: 90g of hemihydrate gypsum, 20g of fly ash, 15g of expanded perlite, 5g of Portland cement, 0.17g of modified cellulose ether, 0.024g retarder, 0.7g thixotropic lubricant.

[0046] The hemihydrate gypsum is phosphogypsum.

[0047] Further, the modified cellulose ether is obtained by mixing hydroxypropylmethylcellulose, hydroxyethylmethylcellulose, hydroxyethylcellulose and sodium carboxymethylcellulose.

[0048] The retarder is composed of the following raw materials in parts by mass: 1.2 g of amino polyoxymethyl calcium salt, 0.15 g of borax, 0.03 g of sodium hexametaphosphate, and 0.02 g of mannitol.

[0049] The thixotropic lubricant is modified magnesium aluminum silicate.

[0050] The method comprises the following preparation steps: weighing each raw material component, stirring, adding to a hopper of a gypsum spraying machin...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a gypsum-based sand-free spraying light-weight plastering material and a preparation method thereof. Byresearching a retarder of the gypsum-based sand-free spraying light-weight plastering material, a mixed retarder is adopted, while the delayed coagulation is achieved, the gypsum is slightly damaged,after the gypsum-based sand-free spraying light-weight plastering material is used for 7 days, the breaking strength reaches 2.5 to 3.0 MPa, and the compressive strength reaches 5.5 to 6.0MPa. The porosity is 37.5 to 38.7 percent, an average pore diameter is 1600 to 1835nm, and various requirements of GB / T28627-2012 on the gypsum-based sand-free spraying light-weight plastering material can be met.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a gypsum-based sandless lightweight plastering material and a preparation method thereof. Background technique [0002] In interior wall construction, traditional cement mortar and mixed mortar have poor water retention and large shrinkage during hydration and drying, which can easily lead to hollowing and cracking of the wall, which is more likely to occur when the construction is not standardized. The on-site repair rate is high, which is a defect that cement-based mortar itself cannot overcome. At the same time, cement, a product with high energy consumption and high emission, is one of the important factors causing the haze weather conditions. Therefore, it is imperative to develop a modern green building materials industry that is environmentally friendly and energy-saving. [0003] Plastering gypsum mortar is a plastering material used for building ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
CPCC04B28/144C04B2111/00155C04B2111/40C04B2201/50C04B22/144C04B22/143C04B24/383C04B24/28C04B22/147C04B22/08C04B22/00C04B24/026C04B14/185C04B18/08C04B7/02
Inventor 冯有愉冯永森周勤
Owner 深圳摩盾环保新材料有限公司
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