Lightweight Plaster Gypsum (Interior Wall Leveling Layer)
Setting time: The initial setting time shall be no less than 1 hour, and the final setting time shall be no more than 8 hours.
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Lightweight Plastering Gypsum
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Lightweight Plaster Gypsum (Interior Wall Leveling Layer)
Setting time: The initial setting time shall be no less than 1 hour, and the final setting time shall be no more than 8 hours.
Water retention: The water retention of the surface-layer plaster gypsum shall be no less than 90%, that of the base-layer plaster gypsum no less than 75%, and that of the lightweight base-layer plaster gypsum no less than 60%.
Strength: The flexural strength of base-layer plaster gypsum shall be not less than 2.0 MPa, the compressive strength shall be not less than 4.0 MPa, and the tensile bond strength shall be not less than 0.4 MPa; for lightweight base-layer plaster gypsum, the flexural strength shall be not less than 1.0 MPa, the compressive strength shall be not less than 2.5 MPa, and the tensile bond strength shall be not less than 0.3 MPa.
Volumetric density: The volumetric density of thermal-insulation-layer plaster shall not exceed 500 kg/m³, and that of lightweight base-layer plaster shall not exceed 1,000 kg/m³.
Note: National standard.
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