Polycrystal inorganic lightweight aggregate thermal insulation mortar

Abstract

The invention discloses a polycrystal inorganic lightweight aggregate thermal insulation mortar. The polycrystal inorganic lightweight aggregate thermal insulation mortar comprises cement, redispersible latex powder, hydroxymethyl propyl cellulose ether,air entraining agent, organosilicone water repellent, closed perlite or glass beads. 98% of the thermal insulation mortar is an inorganic incombustible material; the thermal insulation mortar has integrative functions of heat insulation, decoration, fire retardance, water retardance, climatic change resistance and the like; moreover, the process is simple and easy to operate; quality problems caused by construction technique can be reduced; the development cost is lowered; and large-range promotion and application are promoted.

Description

technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a polycrystalline inorganic light aggregate thermal insulation mortar, which is mainly used for internal and external energy-saving and thermal insulation of walls, roofs or floor ceilings of building enclosure structures. Background technique [0002] At present, domestic and foreign building wall insulation generally adopts plate or component thermal insulation materials, which are expensive, difficult in construction technology, and poor in impact resistance, but have good thermal insulation effects and are suitable for cold regions; there is another thermal insulation material, namely Rubber powder polystyrene particle external wall thermal insulation system, the thermal insulation system is composed of interface layer, thermal insulation layer, anti-crack protective layer, which plays the role of thermal insulation and protection. In the prior art, ther...

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Problems solved by technology

In the prior art, there is cement in each layer of the rubber powder polystyrene particle external wall insulation system, but because the cement is a hydraulic material and forms cement stone with hydrate, it usually takes 28 days to reach the design strength, and it is dehydrated prematurely. When the hydration stops, the strength will no longer increase. The cement-containing material is a plastic material mixed with water. The volume shrinks with the evaporation of water. During the shrinkage process, if the cement-containing material has no strength or low strength, the shrinkage stress is greater than that of the material. The amount of shrinkage will show as relatively concentrated large cracks, and there will be problems of cracks caused by expansion and shrinkage caused by temperature changes; secondly, the impermeability, anti-seepage, The waterproof ability is poor, and if the impermeability and waterproof performance are poor, it is easy to get damp when it is wet by rain and snow or in a humid air environment, such as in areas with high air humidity such as East China, which will form in the gaps in the thermal insulation layer. Water vapor, heat energy will be conducted through water vapor, which will weaken the heat preservation and energy-saving effect of the heat insulation layer; in addition, the existing rubber powder polystyrene particle external wall insulation system has the characteristics of rigidity, so it is easy to cause heat loss due to temperature stress or other external forces. Impact, expansion or shrinkage and other brittle failures; again, the existing rubber powder polystyrene particle external wall insulation system has the disadvantages of low bond strength, low impact resistance and low compressive strength, and in hot summer and cold winter regions due to the temperature difference effect , it is easy to produce local hollowing, shedding and other phenomena in the interface layer

In addition, there are high fire hazards in the insulation construction and use of organic boards or components, and serious safety production accidents have occurred in Beijing, Shanghai, Shenyang, etc.; and the insulation of rubber powder polystyrene particles has the disadvantages of low bond strength and easy weathering

These materials do not meet the characteristics of the regions south of the Yellow River and the middle and lower reaches of the Yangtze River, which are hot in summer and cold in winter, where the requirements for thermal insulation are relatively low, and the requirements for waterproofing and heat resistance are high.

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