Cement-based floor self-leveling mortar

Abstract

The invention discloses cement-based floor self-leveling mortar comprising the following components according to weight ratio: 35-45 parts of high alumina cement, 40-50 parts of Portland cement, 8-10 parts of quartz sand, 3-5 parts of talcum powder, 4-5 parts of anhydrous gypsum, 0.5-1.5 parts of redispersible whey powder, 0.65-1 part of casein, 0.5-1.2 parts of defoaming agent, 0.8-1 part of retarding and water reducing agent, 1.5-2.2 parts of hydroxypropyl methyl cellulose and 0.1-0.3 part of nanometer titanium dioxide. A small amount of nanometer titanium dioxide is added in the cement-basec floor self-leveling mortar disclosed by the invention to improve the crystallinity and accelerate the condensation rate. The redispersible whey powder can effectively improve the bending strength and crack resistance of the mortar and avoid the shrinkage and crack of the mortar. The quartz sand with low fineness modulus is selected to effectively improve the floor wearing resistance of the mortar. The surface of the cement-based floor self-leveling mortar disclosed by the invention is unlikely to crack and the condensation rate is high, so that the mortar is suitable for leveling a new floor and renovating an old floor.

Description

Technical field [0001] The invention relates to a building material, and to be precise, to a cement-based ground self-leveling mortar. Background technique [0002] Cement-based ground self-leveling mortar is a special type of cement that can achieve a predetermined strength and compactness of the mortar, mortar or concrete without vibrating at a low water-cement ratio. It has good mobile phase and stability, and has high early strength and construction High speed, it is an ideal material for ground construction such as ultrasound, parking lot, workshop, exhibition hall, etc. Traditional self-leveling cement-based ground mortar has the problems of slow setting speed and easy cracking, which cannot fully meet the needs of modern buildings. Summary of the invention [0003] The invention provides a self-leveling cement-based ground mortar with fast setting speed and not easy to crack. [0004] The technical scheme adopted by the present invention is: a cement-based ground self-level...

AI Technical Summary

Problems solved by technology

The traditional cement-based self-leveling mortar has the problems of slow setting speed and easy cracking, which cannot fully meet the needs of modern buildings

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