Any mortar applied to the surface of a building or building component is collectively called lightweight gypsum mortar. According to the different functions of lightweight gypsum mortar, lightweight gypsum mortar can be divided into ordinary lightweight gypsum mortar, decorative mortar and lightweight gypsum mortar with certain special functions (such as waterproof mortar, thermal insulation mortar, sound-absorbing mortar and acid-resistant mortar, etc. ). Lightweight gypsum mortar is required to have good workability and be easy to spread into a uniform and thin layer for easy construction. It should also have high bonding strength, and the mortar layer should be able to bond firmly with the bottom surface and not crack or fall off for a long time. Parts that are in humid environments or susceptible to external forces (such as floors and wall skirts, etc.) should also have high water resistance and strength.
Characteristics of lightweight gypsum mortar
1. The plaster layer does not bear load;
2. The plaster layer and the base must have sufficient bonding strength, and will not fall off or crack during construction or under long-term weight and environmental effects;
3. It is mostly a thin layer and is applied in layers. The surface layer must be smooth, smooth, meticulous and beautiful;
4. Mostly used in dry environments, with large areas exposed to the air
Classification of lightweight gypsum mortar:
Ordinary lightweight gypsum mortar: It is the most commonly used plastering mortar in construction projects. It mainly protects walls and floors from erosion by wind, rain and harmful impurities, improves moisture-proof, anti-corrosion, anti-weathering properties, and increases durability; At the same time, the building can be smooth, beautiful and clean. Decorative mortar: Lightweight gypsum mortar that is applied to the surface of the interior and exterior walls of a building and has a beautiful decorative effect is commonly known as decorative mortar. It is necessary to select cementitious materials and aggregates with a certain color and adopt a certain special operating process to make the surface show various decorative effects such as colors, lines and patterns.
Waterproof lightweight gypsum mortar: The mortar used to make the waterproof layer is called waterproof mortar. Mortar waterproof layer is also called rigid waterproof layer. This type of waterproofing is only suitable for concrete or masonry work that is not subject to vibration and has a certain stiffness. For structures with large deformation or uneven subsidence, it is not appropriate to use a rigid waterproof layer. Waterproof lightweight gypsum mortar mortar can be made with ordinary cement mortar, or a waterproofing agent can be added to the cement mortar to improve the impermeability of the mortar.
Insulation mortar: Insulation mortar, also known as thermal insulation mortar, is made of cement, lime and gypsum and other cementitious materials and expanded perlite or expanded vermiculite, ceramic sand and other lightweight materials. Mortar made of porous aggregates in a certain proportion. Thermal insulation mortar has the properties of light weight, thermal insulation, and sound absorption, and can be used for roof insulation layers, insulation walls, and heating pipe insulation layers.
Sound-absorbing mortar: Generally, thermal insulation mortar is made of lightweight porous aggregates and has sound-absorbing properties. Sound-absorbing mortar is mainly used for indoor walls and flat roofs. Acid-resistant mortar: Acid-resistant mortar is made by mixing water glass (sodium silicate) and sodium fluorosilicate. Sometimes it can also be mixed with powdery fine aggregates such as quartzite, granite, and cast stone. Water glass has good acid resistance after hardening. Acid-resistant mortar is mostly used as lining material, acid-resistant floor and inner wall protective layer of acid-resistant containers.
Through the above description, do you know enough about lightweight gypsum mortar? This is a very important building base material, so its quality and performance are directly related to the quality of the construction project. During use, you should choose the corresponding lightweight gypsum mortar according to your needs. The quality must be guaranteed. Thank you all for your support. Reading, I also hope that experts in related industries can give me more advice. It will be continuously updated every day. If you want to know more industry information, mortar information, and decoration skills, please follow us. </p
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