External thermal insulation system with low-thermal-conductivity and high-strength mortar

Abstract

The invention discloses an external thermal insulation system with low-thermal-conductivity and high-strength mortar. The external thermal insulation system comprises interface mortar, heat insulation mortar, anti-crack plastering mortar, alkali-resistant fiberglass mesh, flexible waterproof putty and modified epoxy resin. The system adopts onsite plastering type cavity-free external thermal insulation procedures, and a face layer adopts a flexible gradient material matching system. The system has the advantages of high wind pressure resistance, weather resistance, integral crack resistance, fire rating, impact resistance, thermal storage capacity, air permeability and dimensional stability, small contraction, excellent heat insulation performance and the like. Further, the external thermal insulation system is simple in construction process, can be moulded optionally, and is especially applicable to buildings rich in building elevation and available for direct construction on base layers poor in evenness.

Description

technical field [0001] The invention relates to an external wall thermal insulation system with low thermal conductivity high-strength mortar, which belongs to the technical field of building materials. Background technique [0002] In our country, building energy conservation is being vigorously promoted and gradually enforced. The implementation of energy conservation for envelope structures is the main part of building energy conservation. 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...

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Problems solved by technology

[0003]shrinkage, during the shrinkage process, if the cement-containing material has no strength or the strength is very low, the shrinkage stress is greater than the tensile strength of the material, and the shrinkage will be relatively concentrated large cracks, and there is the problem of cracks due to expansion and contraction caused by temperature changes; secondly, the anti-seepage and waterproof ability of the rubber powder polystyrene particle external wall external insulation system in the prior art is poor, and if the anti-seepage and waterproof performance Poor, wet by rain and snow or easy to get damp in humid air environment, such as in East China and other areas with high air humidity, thus forming water vapor in the gaps of the thermal insulation layer, heat energy will be conducted through water vapor, weakening the thermal insulation The heat preservation and energy-saving effect of the heat layer; in addition, the existing rubber powder polystyrene particle external wall insulation system has the characteristics of rigidity, so it is easy to cause brittle damage such as impact, expansion or contraction due to temperature stress or other external forces; thirdly, the current Some rubber powder polystyrene particle external wall insulation systems have the disadvantages of low bonding strength, low impact resistance, and low compressive strength, and due to the temperature difference effect in hot summer and cold winter regions, local hollowing and shedding are prone to occur in the interface layer and other phenomena