The type selection of Jinan plastering mortar should be based on the local climate, building structure, and wall substrate, and meet the needs of leveling, protection, decoration, etc. through reasonable proportioning. Common types are divided into ordinary, waterproof, insulation, and decorative plastering mortar according to their functions, suitable for the entire process from base treatment to surface decoration.
Ordinary plastering mortar is centered around leveling and bonding. Cement mortar has high strength and is suitable for clay bricks and concrete base layers. It needs to be applied layer by layer with a thickness of 5-7mm. Before construction, the base layer should be moistened to avoid cracking. The addition of lime paste to mixed mortar improves water retention and has moderate adhesion, making it suitable for aerated concrete walls. It is commonly used for plastering interior walls and has a smooth surface. Lime mortar has low strength, but good workability, suitable for temporary buildings or indoor dry environments, and low cost.
Waterproof plastering mortar focuses on impermeability performance. The polymer waterproof mortar forms a waterproof membrane by adding lotion, which can be directly used as the waterproof layer of the external wall to resist rainwater penetration and firmly bond with the base course. Two layers of coating are applied during construction, and the surface can be coated with waterproof coating to enhance impermeability, suitable for humid environments. The cost of cement mortar mixed with waterproofing agent is relatively low, with an anti-seepage grade of P6, suitable for areas with low waterproofing requirements, and attention should be paid to curing to avoid cracking.
Thermal insulation plastering mortar balances insulation and protection. Rubber powder polystyrene particle insulation mortar has a low dry density and thermal conductivity. As an external insulation coating for exterior walls, it can reduce building energy consumption and has good flexibility to reduce temperature cracks. Inorganic insulation mortar has a high fire rating and is suitable for high-rise buildings. The surface needs to be treated with crack resistance to prevent cracking. Construction should be carried out during the leveling of the base layer, and layered coating should be applied to ensure even insulation layer.
Decorative plastering mortar combines functionality and aesthetics. Colored mortar can be directly used as exterior wall decoration, with strong weather resistance and surface texture treatment to enhance the three-dimensional sense. Decorative mortar has breathability, can adjust indoor humidity, is environmentally friendly, suitable for indoor walls, and requires one-time molding for construction. Imitation stone, imitation brick plastering mortar simulates the texture of stone, with light weight and low cost, suitable for exterior wall decoration.
The selection of plastering mortar should be based on the scene: for new building exterior walls, waterproof+insulation composite mortar should be preferred; Ordinary mortar leveling and decorative mortar finishing are commonly used in the renovation of old residential areas; Waterproof mortar must be used in humid environments; Indoor dry areas can choose mixed mortar. During construction, attention should be paid to meteorological conditions to avoid adverse weather conditions, and moisture should be maintained during maintenance.
Jinan plastering mortar is developing towards functional composite, which not only adapts to regional climate, but also meets energy-saving and aesthetic needs, providing targeted wall treatment solutions for buildings.
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