Ecological low cement-based finishing mortar

Abstract

The invention relates to an ecological low cement-based finishing mortar. The ecological low cement-based finishing mortar consists of the following components in percentage by weight: 12.5 percent of white cement, 50 percent of high-whiteness quartz sand, 30 percent of ground limestone, 0.15 to 0.2 percent of cellulose ether, 0.3 to 0.4 percent of lignocellulose, 0.2 to 0.4 percent of water repellent, 0.2 percent of efflorescence inhibitor, 6 percent of redispersible latex powder and 0.4 to 0.5 percent of starch ether. The materials are uniformly mixed and then added with water which is 18 percent of the total weight of the materials, and after uniform mixing, the ecological low cement-based finishing mortar is produced. The white cement, the quartz sand and the ground limestone are elaborately proportioned and then added with the other auxiliary materials, consequently, the product cost is low, and the ecological low cement-based finishing mortar has the characteristics of good weather fastness, seepage resistance, water-proofness, mould-proofness, energy saving, environment-friendliness, easiness in dry powder storage, long guarantee period, and the like, convenience in transportation, and is suitable for the construction of inner and outer walls of buildings under various environmental weather conditions.

Description

technical field [0001] The invention relates to a chemical material, in particular to an ecological type low cement-based finishing mortar. Background technique [0002] Facing mortar is a new type of wall decoration material imported from abroad in my country. It is composed of inorganic cementitious materials, fillers and aggregates, and is used for decoration on the surface of building walls. Since the thermodynamic properties such as elastic modulus and thermal expansion coefficient of the facing mortar are similar to the plastering mortar of the external thermal insulation system, it has good matching and compatibility with the external thermal insulation system. Compared with the existing organic paint finish layer, the finish mortar has good durability, which can reduce the cost of maintenance and renovation of organic paint products; compared with the tile finish, the finish mortar is only 1-3mm thick and light in weight , can greatly reduce the load of the external...

AI Technical Summary

Problems solved by technology

[0003] However, facing mortar also has some defects of its own, such as easy efflorescence, and limited color choices when used as exterior wall decoration materials. In order to overcome these shortcomings, researchers and technicians in the industry have also adopted various means and methods for research

Chinese patent CN101475354A discloses an anti-efflorescence exterior wall finishing mortar. The finishing mortar described in the patent mainly uses a high-alumina cement system as a cementitious material to suppress the water-soluble salt Ca(OH) 2 In order to achieve the purpose of anti-efflorescence, but the disadvantage of this kind of facing mortar is that high alumina cement is used as the inorganic cementitious material, and the price of high alumina is relatively high compared with ordinary silicate cement, resulting in this kind of facing mortar higher price

The finishing mortar system described in the above patent, but the disadvantage of this kind of finishing mortar is that the mortar is not a general-purpose finishing mortar, it is only used for the surface of the ten vitrified microbead thermal insulation system, and the application range is limited

Chinese patent CN107723638A discloses a wall finish mortar, a high-performance wall finish mortar, using white cement as the inorganic gel material, modified with acrylic acid dispersible rubber powder, adding different grades of quartz sand and heavy calcium and other additives, but the disadvantage of this kind of finishing mortar is that the high concentration of redispersible rubber powder is used to ensure that the finishing mortar has good bonding strength and aging resistance, which is a high production cost.

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