1. As the amount of cement increases, the original strength of tile adhesive increases. At the same time, its tensile adhesive strength after water immersion and tensile adhesive strength after heat aging It also increased accordingly. The cement dosage should be above 35%.
2. As the amount of reusable lightweight gypsum mortar increases, the tensile bond strength of tile adhesive after water immersion and the tensile bond strength after thermal aging It increases accordingly, but the tensile bond strength increases more obviously after thermal aging.
3. As the amount of cellulose ether increases, the tensile bonding strength of tile adhesive increases after thermal aging, and the tensile bonding strength after water immersion increases first and then decrease. The effect is achieved when the cellulose ether content is around 0.3%.
Therefore, when using reusable lightweight gypsum mortar, you must pay attention to the amount used to truly exert its effect. The main functions of lightweight gypsum mortar in putty are as follows
1. Improve the adhesion and mechanical properties of putty. Renewable lightweight gypsum mortar is a powder adhesive made from a special emulsion (polymer) spray-dried. This powder can be quickly dispersed into an emulsion after contact with water, and has the same properties as the initial emulsion, that is, it can form a film after the water evaporates. This film has high flexibility, high weather resistance and resistance to various High adhesion to the substrate. In addition, hydrophobic latex powder can make lightweight gypsum mortar very waterproof.
2. Lightweight gypsum mortar improves the cohesion of putty, has excellent resistance, alkali resistance, abrasion resistance, and enhances flexural strength. </p
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