Paint knowledge | special plastering mortar

Core tips: 1 Waterproof mortar waterproof mortar is a kind of mortar with high impermeability Waterproof mortar layer, also known as rigid waterproof layer, is suitable for the surface of concrete or masonry without vibration and with certain rigidity For buildings with large deformation or possible uneven settlement, rigid waterproof layer should not be used According to its composition, waterproof mortar can be divided into four categories: multi-layer plastering cement mortar, waterproof mortar mixed with waterproof agent, expansion cement waterproof mortar and polymer waterproof mortar The commonly used water proofing agents are chloride metal salt water proofing agent, water glass water proofing agent and metal soap water proofing agent, etc The anti-seepage effect of waterproof mortar depends on the construction quality to a great extent Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Coating home news: 1 Waterproof mortar waterproof mortar is a kind of mortar with high impermeability Waterproof mortar layer, also known as rigid waterproof layer, is suitable for the surface of concrete or masonry without vibration and with certain rigidity For buildings with large deformation or possible uneven settlement, rigid waterproof layer should not be used According to its composition, waterproof mortar can be divided into four categories: multi-layer plastering cement mortar, waterproof mortar mixed with waterproof agent, expansion cement waterproof mortar and polymer waterproof mortar The commonly used water proofing agents are chloride metal salt water proofing agent, water glass water proofing agent and metal soap water proofing agent, etc The anti-seepage effect of waterproof mortar depends on the construction quality to a great extent, so the quality and mix proportion of raw materials should be strictly controlled during construction The waterproof mortar layer is generally divided into four or five layers, each layer is about 5mm thick, and each layer is compacted once before the initial setting, and the last layer shall be calendered After plastering, the maintenance shall be strengthened to prevent drying and cracking caused by dehydration In a word, rigid waterproof must ensure the compactness of mortar, and require high construction operation, otherwise it is difficult to obtain ideal waterproof effect 2 Thermal insulation mortar, also known as thermal insulation mortar, is a mortar made of cement, lime, gypsum and other cementitious materials combined with expanded perlite or expanded vermiculite, ceramic sand and other lightweight porous aggregate in a certain proportion The thermal insulation mortar has the properties of light weight, heat preservation and insulation, sound absorption and so on Its thermal conductivity coefficient is 0.07 ~ 0.10w / (m · K) It can be used in the roof thermal insulation layer, thermal insulation wall and heat supply pipeline thermal insulation layer The commonly used thermal insulation mortar includes cement expanded pearl mortar, cement expanded vermiculite mortar and cement lime expanded vermiculite mortar With the promotion of energy conservation and emission reduction in China, many new wall insulation materials have emerged, among which EPS (polystyrene) particle insulation mortar is a new type of external insulation mortar widely used, which adopts layered plastering technology, with the maximum thickness of 100 mm This mortar is heat preservation, heat insulation, flame retardant and durable [2] 3 Sound absorption mortar is generally made of lightweight porous aggregate, which has sound absorption performance In addition, it can also be made of cement, gypsum, sand, sawdust by volume ratio of 1:1:3:5 to prepare sound absorption mortar, or in lime, gypsum mortar mixed with glass fiber, mineral wool and other soft fiber materials Sound absorption mortar is mainly used for indoor walls and flat roofs 4 The acid resistant mortar is made of water glass (sodium silicate) and sodium fluosilicate Sometimes, it can be mixed with quartzite, granite, cast stone and other powder fine aggregate Water glass has good acid resistance after hardening Acid resistant mortar is mostly used as lining material, acid resistant ground and inner wall protective layer of acid resistant container 5 Decorative mortar decorative mortar is directly used for the internal and external surfaces of buildings to improve the decorative artistry of buildings as the main purpose of plastering mortar It is one of the common decorative means The bottom and middle plastering of decorative mortar are basically the same as that of ordinary plastering mortar, mainly the surface of decorative mortar It is necessary to select cementitious materials and aggregates with a certain color and adopt a special operation process to make the surface present various decorative effects such as colors, lines and patterns The cementitious materials used in decoration mortar include ordinary cement, slag cement, pozzolanic cement, white cement and color cement The cement commonly used in fire is mixed with alkali resistant mineral pigments to form color cement, lime, gypsum, etc The aggregate is usually made of marble, granite and other colored fine stone slag or glass and ceramic debris Home of coatings is specialized in coatings, diatom mud, paint 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