Organic-inorganic composite decoration cement with high content of fly ash and its preparation method and application

Abstract

The invention discloses high-mixing-amount fly ash organic and inorganic composite decoration cement and a preparation method and an application thereof, and belongs to the technical field of cement. The decoration cement comprises the following raw materials in parts by weight: 50-75 parts of fly ash, 20-35 parts of Portland cement, 5-15 parts of a 300-400 mesh calcium powder, 0.5-2 parts of a redispersible adhesive powder, 0.1-0.6 part of cellulose ether, 0.2-0.5 part of polypropylene fibers, and 0.1-0.4 part of wood fibers. The fly ash can be I-grade fly ash, II-grade fly ash, III-grade fly ash or coarse fly ash; the mixing amount of the fly ash accounts for 50% or more of the total weight of all the raw materials, the requirement on the quality of the fly ash is not stringent, the use rate of the fly ash in the decoration field is greatly improved, environmental pollution is reduced, the amount of the cement is reduced, the energy is saved, and the costs are reduced.

Description

technical field [0001] The invention relates to the technical field of decoration, in particular to an organic-inorganic composite decoration cement with a high content of fly ash and its preparation method and application. Background technique [0002] In the field of construction, common cementitious materials include cement and gypsum. The cementitious material can be mixed with aggregate (sand) and other auxiliary materials to prepare mortar for wall treatment, including masonry mortar, plastering mortar, putty, tile adhesive, etc. There is currently no cementitious material specifically for the decoration field on the market. [0003] In the decoration process, the problems of cement-based cementitious materials are: the cost of cement is relatively high. 3 ), it is easy to fall by itself during the scraping process of the wall, causing inconvenience in construction; when ordinary cement is used alone, its strength is low and it is easy to crack, so it needs to be mad...

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Problems solved by technology

[0003] In the decoration process, the problems of cement-based cementitious materials are: the cost of cement is relatively high. 3 ), it is easy to fall by itself during the scraping process of the wall, causing inconvenience in construction; when ordinary cement is used alone, its strength is low and it is easy to crack, so it needs to be made into mortar with aggregate (generally natural sand, broken sand, etc.) to achieve a certain level. Strength level, while the particles of natural sand are more irregular, the putty or plastering mortar prepared by ordinary cement needs repeated construction to achieve good results in the process of leveling, which has certain construction difficulties; and cement is hydraulic The cementitious material (hardened under the action of water) needs to be replenished and maintained after construction, which is inconvenient for the maintenance of the walls of the home

[0004] In the decoration process, the cost of gypsum is relatively low, but the problem of gypsum cementitious materials is: gypsum is an air-hardening cementitious material, which can only be hardened in the air (dry conditions), and has poor water resistance. It is not suitable for use in places prone to water such as exterior decoration, and its setting speed is fast, so it needs to be prepared on site, and the characteristics of gypsum from different origins are slightly different, so it is necessary to add corresponding retarders according to the characteristics of gypsum for compounding, which increases the construction time. difficulty

[0005] In the decoration process, the base treatment of the wall surface is an indispensable link. After the original wall surface is cleaned, it is necessary to carry out procedures such as plastering and leveling and polishing putty, and these two procedures have higher requirements on the leveling of the construction , the plastering mortar and grinding putty prepared by ordinary cement have higher construction requirements due to the irregularity of the sand, and need to be scraped and painted 3 or 4 times before leveling, which greatly increases the construction difficulty and reduces the construction efficiency; tiling , floor tiles, etc. are also an important part of decoration. The traditional cement mortar tile adhesive has weak adhesion, and consumes a lot of yellow sand, cement, etc., which is not environmentally friendly. Although the new type of tile adhesive is economical and environmentally friendly, it has good adhesion. , but the price is high, and it is difficult for consumers to accept

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