Alkali-efflorescence-free high-waterproofness dry-powder tile joint mixture

Abstract

The invention discloses an alkali-efflorescence-free high-waterproofness dry-powder tile joint mixture which is prepared from the following raw materials in percentage by weight: 28-35% of ordinary silicate cement, 22-35% of coal ash, 22-32% of super fine activated admixture, 3-8% of needle-shaped wollastonite powder, 3-8% of coarse whiting powder, 0.5-2% of redispersible latex powder, 0.1-0.6% of a water repellent, 0.1-0.6% of cellulose ether, 0.1-0.6% of an alkali efflorescence inhibitor, 0.1-0.5% of wood fiber and 0.1-0.3% of a defoaming agent. Due to the adopted super fine activated admixture, the alkali efflorescence phenomenon of an ordinary cement base joint mixture is effectively inhibited, and the overall decoration effect of the tile joint mixture is greatly improved. The water repellent used in the joint mixture is redispersible water repellent powder which has good peaceability with water, so that the joint mixture has a very excellent overall water repellent effect in a hardened state and is especially applicable to relatively damp places such as bathrooms and swimming pools.

Description

technical field [0001] The invention belongs to the technical field of tile grout for building, and in particular relates to a highly waterproof dry powder tile grout that has no efflorescence phenomenon during use. Background technique [0002] Ceramic tiles provide buildings with an aesthetically pleasing decorative surface and important functional advantages such as water resistance, a hard and abrasion-resistant surface, long life, hygiene and ease of cleaning. For these reasons tiles are a very important floor and wall covering material in the construction industry. Ceramic tiles and cement mortar pasted with tiles have the phenomenon of thermal expansion and contraction. In the process of moderate temperature changes, ceramic tiles and cement mortar will expand and contract to a certain extent. Therefore, certain gaps should be left when laying tiles. If no gaps are left , Will cause the tiles to bulge or crack during later use. [0003] The caulking agent is mainly ...

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Problems solved by technology

[0004] In order to solve the above-mentioned problems of the traditional tile grouting agent being prone to efflorescence and poor waterproof and impermeable performance, the present invention provides a dry powder tile grouting agent without efflorescence and high water resistance, which is characterized in that its raw material composition and weight percentage ratio are as follows: Bottom: Ordinary Portland cement 28-35%, fly ash 22-35%, ultra-fine active admixture 22-32%, wollastonite needle powder 3-8%, heavy calcium powder 3-8%, Redispersible latex powder 0.5-2%, water repellent 0.1-0.6%, cellulose ether 0.1-0.6%, efflorescence inhibitor 0.1-0.6%, wood fiber 0.1-0.5%, and defoamer 0.1-0.3%

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