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  1. M

    How to increase the strength of leveling wall putty

    cost USD75? it is impossible. According to what paul said, and suggest you: HPMC 4-5KG The amount of RDP is adjusted according to your cost. If external wall, do not add polyvinyl alcohol. Polyvinyl alcohol provides only early strength and no Water-Resistant. Later saponification will lose...
  2. M

    Help, the interior polished wall putty no gloss

    pva is not recommended to polish wall putty, the surface will have particles, want a good gloss: 1, calcium hydroxide purity is high, fineness is better, it is recommended to add 250-400 kg. 2, heavy calcium powder 350 -400 mesh. 3,Conditions permitting to add 5-10% calcium carbonate light...
  3. M

    What fibers are commonly used in ready-mix mortar?

    Currently, chemical synthetic fibers and wood fibers are commonly used in ready-mix mortar. After surface modification of these chemical synthetic fibers, such as polypropylene staple fiber or PP staple fiber, they will be not only good in dispersion, but also low in the amount added, able to...
  4. M

    What is the mechanism of crack resistance of fibers?

    When fibers are uniformly and disorderly dispersed in the cement mortar matrix, subject to external force or internal stress changes, fibers have limited and hindered the extension of micro-cracks to a certain extent. Hundreds of millions of fibers, crisscrossed and isotropic, are evenly...
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    What are the roles of fiber in mortar?

    The main roles of fiber in mortar are crack resistance, toughening, impact resistance, permeability resistance, frost resistance and fatigue resistance, etc. ① Crack Resistance: Prevent the extension of original defect cracks in the mortar matrix, effectively prevent and delay the emergence of...
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    What are the roles of adding fiber into cement mortar?

    Since cement mortar is a brittle material, with the tensile strength much less than its compressive strength, the impact resistance and crack resistance are poor. There exist a lot of dry shrinkage cracks and temperature cracks in the cement products. These cracks continue to change and develop...
  7. M

    What is the difference between the C1T and C2T grades in the tiles adhesive?

    Our tile adhesive recipe: 42.5 cement 400 kg, Quartz sand 40-70 mesh 450 kg, 70-140 mesh 150 kg, HPMC 100000cps 3 kg, RDP 18 kg, PVA 1.5 kg, Wood fiber 1 kg, Posted marble tiles 800X800 problem? If the inspection can pass C2 Level?
  8. M

    Add 10kg RDP or 20kg RDP into 1mt tile adhesive, Feeling no difference?

    Add 10kg RDP or 20kg RDP into 1mt tile adhesive, why feeling no difference? Can we add PVA into tile adhesive? What role does it play?
  9. M

    What are the requirements of buildings with ETICS on the plastering mortar?

    ETICS, the abbreviation for External Thermal Insulation Composite System, is the most important measure to improve the thermal insulation of building envelope. The ETICS technology places the insulation layer on the outer surface of building envelope, so that heat preservation and thermal...
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