The emergence of new wall insulation materials has greatly facilitated the development of the construction industry. Although the various systems are now relatively perfect, there are still some problems in the application of new wall insulation materials. Therefore, based on the experience of own construction, this article briefly discusses some issues and contents related to the new wall insulation materials in construction projects. So that people in the same industry can learn from each other in their own work. 1 New wall insulation materials Commonly used insulation materials in construction are: extruded polystyrene foam (extruded board), molded polystyrene foam (ordinary foam board), now sprayed rigid foam polyurethane, rigid foam Polyurethane insulation board (product), foam glass, foam concrete (foam mortar), lightweight aggregate insulation concrete (ceramsite concrete, etc.), inorganic thermal insulation mortar (vitrified microbead insulation mortar), polystyrene granule insulation mortar, mineral wool ( Rockwool), phenolic resin board, expanded perlite insulation mortar, etc. Therefore, there are many types of insulation materials and a wide range of applications. More commonly used are: glass wool products, waterproof insulation blankets, insulating foam glass, polyurethane and so on. Here are two examples for brief analysis: (1) Relative to glass wool products, its use: air conditioning insulation, duct insulation, steel rigid foam polyurethane, extruded polystyrene board, molded polystyrene board , phenolic resin, mineral fiber products, polystyrene granule slurry, composite wood, soft wood, etc. Hard foam polyurethane is the lowest thermal insulation material in the field of building insulation. Its thermal conductivity is only 0.018~0.024W/(mk). It is the leading product in the field of international building insulation and the 65% target for realizing building energy saving in China. Ideal insulation product. For polymer flexible anti-cracking waterproof mortar, it is a special polymer dry-mixed mortar with excellent waterproof, anti-seepage and anti-cracking properties. It is imported polymer modified material and high modulus and high elasticity. The one-component dry mix made of alkali fiber can be used on site construction with water mixing. It is mainly applied to various wall insulation layers to form an excellent anti-crack and anti-seepage layer, which is beneficial to protect the comprehensive performance of the thermal insulation base. Improve the affinity of the interface of the thermal insulation layer, and provide an excellent interface base layer for the construction of the subsequent finishing materials. Therefore, it not only adapts to the special flexible anti-cracking waterproof mortar for the thermal insulation and fireproof mortar surface layer, but also applies some insulation surface layers and The thermal insulation mortar surface layer is used for surface anti-cracking treatment. In short, the main characteristics of this material are: excellent crack resistance, anti-seepage performance, good weather resistance; high adhesion strength, good affinity with various wall substrates; wall insulation mortar surface layer is very Good overall crack resistance and anti-seepage performance form a good interface layer in the thermal insulation surface layer, which is convenient for the construction quality of the subsequent construction; convenient construction, direct watering and stirring on the site can save time and labor, and reduce the comprehensive cost. 2 Classification of thermal insulation materials is classified according to different bulk density, composition, range, shape and construction method of thermal insulation materials. The specific ones are as follows: 2.2 According to different components: can be divided into organic and inorganic two. 2.3 According to the applicable temperature range: can be divided into high temperature (700 C or more), medium temperature (100 ~ 700 ° C) and low temperature (less than 100 ° C) three categories. 2.4 According to different shapes, it can be divided into powder, granular, fibrous, block, etc., and can be divided into porous, mineral fiber and metal. 2.5 According to different construction methods, it is divided into: wet wipe, filling, lashing, wrapping and winding. 3 Classification and existing problems of new wall insulation materials 3.1 New building wall materials are divided into 6 categories: 3.1.1 non-clay bricks, including non-clay sintered porous bricks and hollow bricks with a hole ratio greater than 25%, concrete hollow bricks and hollow blocks, sintered Shale bricks; 3.1.2 building blocks, including ordinary concrete small hollow blocks, light aggregate concrete small hollow blocks, autoclaved aerated concrete blocks and gypsum blocks; 3.1.3 building boards, including glass fiber reinforced Cement lightweight porous partition wall slab, fiber reinforced low alkali cement building slab, autoclaved aerated concrete slab, light aggregate concrete slab, steel grid cement sandwich panel. Gypsum wallboard, metal surface core board, composite lightweight sandwich partition board, strip; 3.1.4 raw material containing not less than 30% of industrial waste residue, crop straw, garbage, river silt wall material products 3.2 Problems existing in China At present, there are mainly problems in China's new wall insulation materials: new wall materials require a large amount of scientific research input technology, and their prices tend to be much higher than ordinary materials, which is for large areas. The promotion and use of the system has brought serious constraints; (2) due to the newly developed materials, there is no corresponding specification for the construction process, construction technology and testing methods, which makes it difficult to ensure the quality of the construction; The quality of the products can not meet the requirements; (3) driven by the interests also seriously affect the development of new wall materials. (4) The construction requirements of new wall insulation materials tend to be relatively high. Due to the emphasis on the skill training of construction squatting construction personnel, the skills of construction workers are not sufficient, which cannot ensure the quality of wall masonry and installation; Sturdy and prone to cracks and leaks; (5) The research report of some new wall materials is compiled by the material manufacturing unit, which has the nature of introducing products, one-sidedness, and inconvenience as the basis for material selection; (6) governments at all levels Although the use of new wall materials is strongly promoted, the construction units and construction units encounter problems such as wall cracking, water seepage, plastering falling off, pollution and damage to interior decoration after using new wall materials, and the current cost of clay bricks is still low. In the general new wall materials, it is difficult to promote the use of new wall materials, and the cost of using new wall materials should be carefully studied. Therefore, in addition to the efforts of governments at all levels to vigorously grasp this work, it is necessary to use enterprises and scientific research design and technical departments at all levels to conduct comprehensive research to correctly solve the above problems and accelerate the promotion and application of new walls. 4 Construction technology common considerations for new wall materials 4.1 Implementation measures for full ash mortar during construction In view of the fact that new wall materials generally have large blocks and some hollow blocks still have holes, they are given to the masonry process. The control of the fullness of the mortar joint mortar brings certain difficulty, and the lack of mortar, especially the vertical gray seam, is the main potential factor for wall cracking. The research team produced a simple tool for auxiliary masonry, and after trialing in some practical projects, it was found that the wall masonry built by this method basically eliminated the appearance of the seam phenomenon after the second jointing. The workers' praise, the tool diagram is as above. The rationality of this tool is subject to more practical engineering verification. (Continued from page 169) Register and file, conduct regular inspections, assessments, monitoring, and formulate emergency plans, and report the emergency measures that should be taken by the employed personnel and related emergency situations. “Related safety measures and emergency measures are reported to the local people concerned. The government is responsible for the safety supervision and management department and other relevant departments for the record." 4.3 The enterprise's control of the hazard source is mainly based on the analysis of various aspects of the project, current status, external environment, management system, process level and other factors before the start of construction, so as to be in the process of construction. Focus on key parts and key links to play a role in safety and prevention. 4.4 Really implement the responsibility system for safety production posts of construction enterprises. According to the characteristics of the project, all kinds of hazard sources in the construction site should be identified and evaluated. The site should be equipped with sufficient safety management personnel to develop active and effective risk prevention and management measures. During the construction process, the implementation of regular personnel should follow up the supervision and inspection. The prescribed behavior is promptly discovered and corrected in time. At the same time, the organization formulates the control objectives of the hazard source in the construction site, implements the responsibility system for safety posts, signs the responsibility for safety management step by step, decomposes at different levels, and assigns responsibility to people. 4.5 Professionals engaged in safety management must strictly perform their duties, correctly grasp and apply the evaluation methods of hazard source identification in the management system, guide and help the construction site and construction personnel to effectively identify hazards, and how to target different sources. Hazardous sources take appropriate countermeasures to avoid major safety accidents. (Continued from page 165) The bottleneck restricting social and economic development. 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