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

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...

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

Images