The main problem and solution of the quality of the insulation project outside the outer wall

China Paint Online News Information: The construction method, part of the external factors are the potential cause of the external wall insulation project problems. The external insulation project is generally composed of the insulation layer and the protective layer. Due to the physical properties of insulation and protective layer materials and the environmental factors of building use, the long-term safety damage of external insulation engineering mainly comes from earthquake, wind, external impact, fire, rain, snow, freezing and other important factors. Among them, earthquake, fire and external force impact are not common occasional factors. The wind, rain and snow, freezing and swelling are serious and common destructive factors in all parts of north and south of China. The main reasons for the destructive effect of these destructive factors are that the insulation layer and the main wall are not fixed and occur directly, or the protective layer cracks and indirectly occurs, and negative wind pressure falls or freezes and swells peel off as the main phenomenon. It is not difficult to see that, as an external insulation engineering technology, it is necessary to ensure fire safety reliability from materials and engineering, while wind pressure damage, freezing damage, impact damage, wind and snow damage must be guaranteed from the application of technology. Therefore, to solve the external insulation project cracking, waterproofing, is to solve the negative wind pressure damage and frost damage, or flooding damage the most important technical means and engineering problems.affects the aesthetic and important aspects of the surface of the external insulation project: the exterior insulation engineering finish mainly has the vechy brick, dry hanging stone, glass curtain wall and other permanent imm changeable finish and various coatings and other variable finishes. The reliability of the finish brick finish in the former is closely related to the degree of assurance of external insulation technology. The latter is entirely determined by the degree of improvement and reliability of external insulation technology.The main problem of the quality of the external wall insulation project1, fire: in our country, the high-rise buildings in the majority, for the insulation system fire resistance also has strict requirements, once the flammable material as insulation material fire, the consequences can not be imagined, Jinan Olympic Center, Shanghai, a dormitory building is a realistic example. 2, cracking is mainly caused by the wall and the material used in the insulation layer: internal stress, shrinkage ratio, physical properties are separated or adapted. Insulation layer, protective layer once cracking will cause a large area of the wall seepage, its insulation performance will change greatly, can not meet the energy-saving design requirements, and even endanger the safety of the wall itself. 3, shedding, the bonding strength of the materials in the insulation system to meet the standards of national norms, once shedding will seriously endanger life, property safety, and seriously affect the aesthetic beauty of the building facade and the life of the wall itself.can we improve the overall quality of the exterior wall insulation project? 1, responsible for site construction team must develop a thorough external wall insulation construction process planning and process requirements, in the external wall insulation construction within a week, the construction team technical person in charge must be on-site construction personnel for thorough and professional construction and safety construction training and provide Party A with detailed construction technology delivery program, so that workers master the comprehensive technical requirements, and ensure that in the construction process in strict accordance with norms, procedures for construction. 2, polybenzene plate or extruded plate and other auxiliary insulation materials must comply with the building composition paper design requirements, in line with the current building energy-saving standards;3, material management person in charge to strictly control all kinds of insulation materials into the exterior wall. All used for external wall insulation board and other external wall insulation system and products must use the Beijing regulations to meet the policy requirements of energy-saving technology products. The materials used in the exterior insulation project must have the manufacturer's product certificate and performance inspection report and seal, and the specifications, varieties and performance of various materials conform to the design specifications and relevant regulations. After the material enters the field, it shall be sampled and re-examined in accordance with the construction specifications, and the use of non-compliant materials in the project shall be strictly prohibited.4, before the construction requirements to do a good job of door and window frames and other related parts installed and through the quality department's acceptance work, the size and location of each window must meet the design requirements and quality requirements. During construction, the seams of the external wall insulation system must be closed. Corners and yin and yang corners and other parts to do a good job of local strengthening processing construction, while doing a good job to prevent deformation treatment. The temperature of the working environment is most suitable for the construction of external wall insulation when the temperature is above 15 degrees C, and the air relative humidity is less than 80%.