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安徽真石漆浅谈外墙保温系统存在的问题及防治措施

日期:2017年8月7日 浏览[813]
1,安全问题。主要是外墙保温材料防火问题,外墙保温材料脱落和高层饰面材料脱落问题。

安徽真石漆浅谈外墙保温系统存在的问题及防治措施

2、防火问题:主要是防止火灾、火焰点燃绝缘材料的门窗防窜措施是:加强门窗周围的防火保温材料,防止外部保温材料的燃烧。


3、脱落问题:外墙保温材料或堆焊材料从高处坠落,其后果十分严重,尤其是高层建筑,其后果不堪设想。因此,必须采取切实可行的措施防止脱落现象。外墙保温系统由于风荷载,更高的建筑大家都知道高风,外墙在风荷载作用下高层建筑之间往往有一大峡谷壁也有很大影响,即负压吸引,加上外墙保温材料、饰面材料的重量,很容易被吸收掉了。预防措施如下:目前,工程中经常使用机械胶粘剂(通常是不锈钢锚栓和塑料膨胀锚)来防止脱落。


4、保温墙体裂缝问题:外墙保温系统,由于不同的绝缘材料、砂浆、砖或混凝土,从而导致材料温度差异表现在外面的温度由温度应力和温度变形产生的物质的作用下,有不同的尺寸,不同的材料层的温度应力和裂缝之间,导致渗水,外墙保温系统,保温性能大大降低。该工程通常采用抗裂砂浆,铺设耐碱玻璃纤维网或热镀锌、电焊网等钢筋网抗裂。


1, security issues. Mainly on the exterior wall insulation materials, fire protection problems, the external wall insulation materials fall off and high finish material fall off problem.


2, fire prevention: mainly to prevent fire, fire, insulation materials, doors and windows anti channeling measures are: to strengthen the doors and windows around the fire insulation materials, to prevent the burning of external insulation materials.


3, off the question: external wall insulation materials or surfacing materials fall from high, the consequences are very serious, especially high-rise buildings, the consequences will be disastrous. Therefore, practical measures must be taken to prevent shedding. The external wall insulation system due to wind load, the higher the building known high wind wall between the high-rise building under wind load often have a grand canyon wall also has a great influence, namely negative pressure suction, plus external insulation materials, decorative material weight, easily absorbed. Preventive measures are as follows: at present, mechanical adhesives (usually stainless steel anchors and plastic expansion anchors) are often used in engineering to prevent falling off.


4, insulation wall cracks: external wall insulation system, because of the material, mortar, brick or concrete different insulation, resulting in temperature differences in the outside temperature by the temperature stress and deformation of the material under the action of different sizes, a layer of different material temperature should be between stress and crack lead to water seepage, external wall insulation system of thermal insulation performance is greatly reduced. The project usually uses anti crack mortar, laying alkali resistant glass fiber network or hot galvanized, welded wire mesh and other steel mesh cracking.



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