In order to make the performance of the ready-mixed mortar meet the specifications and construction requirements, the mortar admixture is an indispensable component. Magnesium aluminum silicate thixotropic lubricant and cellulose ether are commonly used water-retaining thickeners in mortar. Cellulose ether has good water-retaining properties, but it is expensive and the content is high, which causes serious air-entrainment and greatly reduces the strength of the mortar. Other problems; the price of magnesium aluminum silicate thixotropic lubricant is lower, but when it is blended alone, the water retention is lower than that of cellulose ether, the drying shrinkage value of the prepared mortar is larger, and the adhesion is reduced. The effects of the compounding of magnesium aluminum silicate thixotropic lubricant and cellulose ether on the consistency, delamination, setting time, strength and other properties of the ready-mixed (wet-mixed) mortar are as follows:
The mortar prepared without adding water-retaining thickener has high compressive strength, but poor water retention, cohesiveness, softness, severe bleeding, poor operating feel, and basically cannot be used. Therefore, the water-retaining thickening material is an indispensable component of ready-mixed mortar.
When only magnesium aluminum silicate thixotropic lubricant and cellulose ether are mixed, the construction performance of the mortar is significantly improved compared with the blank mortar, but there are still shortcomings. When the magnesium-aluminum silicate thixotropic lubricant is blended alone, the amount of the magnesium-aluminum silicate thixotropic lubricant has a greater impact on the water consumption per unit, and the water retention is lower than that of cellulose ether; when the cellulose ether is blended alone, the maneuverability of the mortar It is better, but when the content is high, the air entrainment is serious, which greatly reduces the strength of the mortar, and the price is more expensive, which increases the material cost to a certain extent.
Under the condition that all aspects of the performance of the mortar are guaranteed, the preferred dosage of magnesium aluminum silicate thixotropic lubricant is about 0.3%, and the optimal dosage of cellulose ether is 0.1%. The dosage of the two blends is controlled at this ratio. , The overall effect is better.
The basic performance characteristics of different mortars:
The mortar applied to the surface of buildings or building components is collectively referred to as plastering mortar. According to the different functions of the plastering mortar, the plastering mortar can be divided into ordinary plastering mortar, decorative sand and plastering mortar with some special functions (such as waterproof mortar, insulation mortar, sound-absorbing mortar and acid-resistant mortar, etc.). The plastering mortar is required to have good workability, and it is easy to plaster into a uniform and even thin layer, which is convenient for construction. It should also have a high bonding strength, and the mortar layer should be able to bond firmly to the bottom surface without cracking or falling off for a long time. Places in a humid environment or vulnerable to external forces (such as the ground and wall skirts, etc.) should also have high water resistance and strength.
Tile adhesive is also called tile adhesive. This material is made up of cement, quartz sand, polymer cement and a variety of additives, which are uniformly mixed by machinery. Tile adhesive is mainly used to bond ceramic tiles and surface tiles, and is also known as polymer tile bonding mortar. It completely solves the problem that there is no high-quality special bonding material to choose from in the pasting construction of ceramic tiles, floor tiles and other materials, and provides a new and reliable ceramic tile special pasting product for the Chinese market.
Ceramic tile grout is precisely compounded by advanced production technology using fine quartz sand, high-quality cement, pigments, additives, etc., which makes the color more bright and lasting and harmonizes with the wall tiles. It has beautiful appearance, anti-seepage, anti-crack, and The perfect combination of mildew and anti-alkali.
Waterproof mortar is a mortar with certain impermeability performance made by mixing cement and fine aggregate as the main material, using high molecular polymer as the modified material, and mixing according to the appropriate ratio. Guangdong is now compulsory promotion, and the country’s market will gradually grow.
It is made by mixing inorganic cementitious material, fine aggregate and water in proportion, also called mortar. Used in masonry and plastering projects, it can be divided into masonry mortar, plastering mortar and ground mortar. The former is used for the construction of bricks, stones, blocks, etc. and the installation of components; the latter is used for walls and floors. , Plastering of roofs and beam and column structures to meet the requirements of protection and decoration.
Post time: Jul-21-2021