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Dry-mixed mortar dust-proof agent and dry-mixed mortar containing same

A technology of dry powder mortar and dustproof agent, applied in the field of dry powder mortar dustproof agent and dry powder mortar, can solve problems such as affecting the physical and mental health of air quality operators, and achieve obvious dust collection effect, reduce cracking, and add less effect.

Active Publication Date: 2015-11-11
广东龙湖科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the raw materials and products of dry powder mortar have relatively large dust, a large amount of dust will be generated during production, transportation and use, which will have a serious impact on human health. The mixing area is equipped with dust removal equipment, but this equipment can only reduce the dust generated during the mixing process, and it is still unable to solve the large amount of dust generated during the transportation and use, especially the initial pouring and mixing of dry powder mortar, and these dusts will Seriously affect the quality of air and the physical and mental health of operating workers

Method used

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  • Dry-mixed mortar dust-proof agent and dry-mixed mortar containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Preparation of dry powder mortar dustproof agent

[0016] (1) Grind the straw into 0.2-0.3mm pieces in a pulverizer, soak in hot water at 95°C for 2 hours, and stir for 20 minutes with a high-speed disperser with a speed of 800-2000 rpm, and then use a wire mesh Filtration and drying to obtain dry fibers;

[0017] (2) Stir the fibers obtained in step (1) with a weight component of 70% and 5% sodium bentonite in a mixer for 20 minutes, and then use a sprayer to spray 25% simethicone oil into the mixer, and continue Stir for 20 minutes until uniform to obtain a powder dustproof agent.

[0018] 2. Preparation of dry powder mortar

[0019] (1) Tile bonding mortar formula containing dustproof agent (weight ratio)

[0020] Cement 400

[0021] Quartz sand (40-140 mesh) 600

[0022] Cellulose ether 3.5

[0023] Redispersible latex powder 15

[0024] Anti-dust agent 8

[0025] (2) Preparation

[0026] According to the above formula, add cement, quartz sand, cellulose...

Embodiment 2

[0033] 1. Preparation of dry powder mortar dustproof agent

[0034] (1) Crush the straw into 0.1-0.2mm fines in a pulverizer, soak in hot water at 90°C for 2 hours, and stir for 25 minutes with a high-speed disperser at a speed of 800-2000 rpm, then filter with a steel mesh , drying to obtain dry fibers;

[0035] (2) Stir the fiber obtained in step (1) with a weight component of 75% and 10% calcium-based bentonite in a mixer for 20 minutes, then use a sprayer to spray 15% amino silicone oil into the mixer, and continue stirring for 20 minutes until uniform, to obtain a powder dustproof agent.

[0036] 2. Preparation of dry powder mortar

[0037] (1) Formula of interior wall putty powder containing dustproof agent (weight ratio)

[0038] Ash Calcium 150

[0039] Heavy calcium (325 mesh) 850

[0040] Cellulose ether 3.5

[0041] Redispersible latex powder 5

[0042] Anti-dust agent 8

[0043] (2) Preparation

[0044] Add ash calcium, heavy calcium, cellulose ether, redi...

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Abstract

The invention provides a dry-mixed mortar dust-proof agent which can reduce dust generated in the production, transportation and application processes of dry-mixed mortar. The dust-proof agent is obtained by adopting a dry powder blender for stirring in advance and uniformly mixing, by weight, 55-85% of fibers and 5-15% of bentonite, and then spraying 10-30% of silicone oil uniformly into a mixture in the stirring process, wherein the fibers are obtained by pulverizing natural wood chips, halm or straw into powder with the diameter ranging from 0.1 mm to 0.5 mm, then soaking the powder in hot water for two hours at the temperature ranging from 90 DEG C to 100 DEG C, and finally conducting the drying. According to the dust-proof agent, the cost is low, the additive amount is small, dust generated by other raw materials of the dry-mixed mortar can be well adsorbed, dust generated in the dry-mixed mortar production and application processes can be effectively reduced, net structures can be formed in the hardening process of the mortar, and cracks in the hardening process of the mortar can be greatly reduced. The invention further provides the dry-mixed mortar containing the dust-proof agent, and the mortar comprises 12-40% of inorganic cementing materials, 60-85% of aggregate, 0.8-2.0% of additives and 0.6-0.8% of the dust-proof agent.

Description

technical field [0001] The invention relates to an additive for building materials, in particular to an additive capable of reducing the dust of building materials, and more particularly to a dry powder mortar dustproof agent capable of reducing dust generated during the production, transportation and use of dry powder mortar. The invention also relates to a dry powder mortar containing the dustproof agent. Background technique [0002] Dry-mixed mortar is usually called hydraulic cement mixed mortar, which refers to aggregates (such as quartz sand, heavy calcium, fly ash), inorganic cementitious materials (such as cement, gypsum, lime calcium) and additives ( Such as rubber powder, cellulose ether), etc., which are physically mixed in a certain proportion in a granular or powder form, transported to the construction site in the form of bags or in bulk, and can be used directly after mixing with water. Since the raw materials and products of dry powder mortar have relativel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B18/24C04B14/10
CPCY02W30/91
Inventor 李英丁洪永顺
Owner 广东龙湖科技股份有限公司
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