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Phosphorus II type anhydrous gypsum-based masonry mortar and preparation method thereof

A technology for masonry mortar and anhydrite, applied in the field of building materials, can solve the problems of poor water resistance, high carbon emission, poor thermal insulation effect, etc., and achieves excellent thermal insulation effect, excellent water resistance, and improved water resistance. Effect

Pending Publication Date: 2021-12-21
重庆杰博思石膏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing masonry mortar generally uses cement as the base material. However, cement-based masonry mortar has the following defects: easy shrinkage and cracking, poor thermal insulation effect, and high carbon emissions
However, the existing building gypsum has low strength and poor water resistance, which cannot meet the performance requirements of masonry mortar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Phosphorus type II anhydrous gypsum is specifically prepared according to the following steps:

[0027] Dry the phosphogypsum raw material at 45°C until the water content is ≤5%, then calcinate at 800±50°C for 2 hours at a medium temperature, cool it to room temperature through the air flow outside the furnace after firing, and grind it to a specific surface area of ​​400±20m 2 / kg powder, aged for 3 days.

Embodiment 2

[0029] Masonry mortar, which consists of: phosphorus II type anhydrite (prepared in Example 1) 100kg, PO42.5 grade ordinary Portland cement 5kg, S95 grade slag (specific surface area is 400-450m 2 / kg) 20kg, Class II fly ash (residue 30% of the square hole sieve with a fineness of 45μm) 50kg, powdered potassium sulfate 0.4kg, water 65kg, vitrified microbeads (bulk density 80-130kg / m 3 , particle size is 150μm-250μm) 70kg, sand 120kg, hydroxypropyl methylcellulose ether (particle size<150μm) 0.6kg, vinyl acetate-ethylene copolymer redispersible latex powder (particle size is 0.202μm) ) 0.5kg, polycarboxylate water reducer 0.3kg and spherical nano silicon dioxide (particle size 1-100nm) 0.3kg.

[0030] The preparation method of the masonry mortar is as follows: uniformly mix the above raw materials to obtain.

Embodiment 3

[0032] Masonry mortar, which consists of: phosphorus II type anhydrite (prepared in Example 1) 100kg, PO42.5 grade ordinary Portland cement 9kg, S95 grade slag (specific surface area is 400-450m 2 / kg) 18kg, Class II fly ash (residue 30% of the square hole sieve with a fineness of 45μm) 50kg, powdered potassium sulfate 0.7kg, water 72kg, vitrified microbeads (bulk density 80-130kg / m3, granular 150μm-250μm) 80kg, sand 130kg, hydroxypropyl methylcellulose ether (particle size <150μm) 0.6kg, vinyl acetate-ethylene copolymer redispersible latex powder (particle size 0.202μm) 0.5 kg, 0.4kg of polycarboxylate water reducer and 0.4kg of nano silicon dioxide (particle size 1-100nm).

[0033] The preparation method of the masonry mortar is as follows: uniformly mix the above raw materials to obtain.

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to phosphorus II type anhydrous gypsum-based masonry mortar. The masonry mortar comprises phosphorus II type anhydrite, cement, slag, fly ash, potassium sulfate and water. The phosphorus II type anhydrite-based masonry mortar disclosed by the invention is excellent in water resistance.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a phosphorus II type anhydrite-based masonry mortar and a preparation method thereof. Background technique [0002] Masonry mortar refers to the mortar used for masonry bricks, masonry stones and other building blocks. Masonry mortar has excellent construction workability and bonding performance, and has excellent water retention. After gelling, it has rigid and tough mechanical properties, which can improve the wall's crack resistance, impermeability and strain resistance, and has plastic shrinkage. , Low dry shrinkage and other advantages, can ensure the dimensional stability of the wall to the greatest extent. Masonry mortar is mainly used to bond bricks, blocks and plates (Baidu snapshot, common sense answers to masonry mortar, http: / / cache.baiducontent.com / c? m=XXK057DJz4A3eQlNIYFgFS2-V2-jJWufOCq2wEXzTM3xdQMX XOW3qQMzMhxh2grCvMsfEwBtLhMVWwjWQrY-7mptqvYiyQf...

Claims

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Application Information

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IPC IPC(8): C04B28/16C04B111/27C04B111/34
CPCC04B28/165C04B2111/27C04B2111/343C04B7/02C04B18/141C04B18/08C04B22/147C04B14/24C04B14/06C04B24/383C04B24/26C04B2103/302
Inventor 彭家惠朱聪刘先锋张建新
Owner 重庆杰博思石膏有限公司
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