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建筑工程中,由于外墙贴面砖工程具有比涂料装饰耐沾污能力强、色泽耐久性更好等优点而倍受业界青睐,广泛应用与各种工业与民用建筑。一般的做法绝大多数是在抹灰墙体表面或混凝土墙体表面粘贴。近年来,由于建筑节能的要求,已发展到在墙体保温层上粘贴面砖的做法。但是,随着保温层面砖应用的广泛和时间的推移,面砖饰面工程也出现了不少质量问题,主要问题有沿面砖缝出现开裂、面砖大面积脱落和局部脱落。《建筑节能工程施工质量验收规范》GB50411-2007在4.2.10条中规定:外墙外保温工程不宜采用粘贴饰面砖做饰面层,当采用时其安全性与耐久性必须符合设计要求,饰面砖应做粘结强度拉拔试验,试验结果应符合设计和有关标准规定。这条规定主要是考虑到外墙工程中的保温层强度一般较低,如果表面粘贴较重的饰面砖就会呈现软质基底的特性。同时,由于外保温系统置于建筑结构的外层,热应力、火、水或水蒸汽、风压、地震等外界作用力直接作用于其表面,需要采取相应的安全加固措施,使建筑物和保温系统本身保持必要的安定性,
In the construction project, due to the exterior wall tile project has the ability to resist stains and stains better than the decorative coating, the color durability is better, etc., which are favored by the industry and are widely used in various industrial and civil buildings. The vast majority of the general practice is in the plaster wall surface or concrete wall paste. In recent years, due to the requirements of building energy efficiency, has been developed in the wall insulation paste the practice of tiles. However, with the wide application of thermal insulation brick and the passage of time, a great deal of quality problems have also appeared in the tile facing engineering. The main problems are cracks along the brick cracks, large areas of the tiles detaching and partial shedding. “Building energy-saving construction quality acceptance norms” GB50411-2007 in 4.2.10 states: external insulation works should not be used to paste decorative tiles to do the finish, when used, its safety and durability must meet the design requirements, decoration Tiles should be bonded strength pull test, the test results should be consistent with the design and related standards. This provision is mainly due to the fact that the strength of the insulation in exterior wall works is generally low, and the characteristics of a soft basement appear if the surface is heavily clinging to the veneer. At the same time, due to the external insulation system placed in the outer layer of the building structure, external forces such as heat stress, fire, water or water vapor, wind pressure and earthquake directly affect the surface of the building. Corresponding safety reinforcement measures need to be taken to make the building and Insulation system itself to maintain the necessary stability,