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辽宁省新宾县地处辽宁东部山区,四季气候分明,冬季气温可低达-25℃,夏季气温又可高达25℃E左右。我县的建筑工程,屋面保温层多采用炉渣和水泥膨胀珍珠岩等松散材料,这些保温材料含水率高,湿气被封闭在防水层下面,水分蒸发不出去。夏季气温高时保温层内水分被气化膨胀,则使找平层砂浆及防水油毡撕裂。对我县近几年屋面渗漏情况的调查统计表明,屋面渗漏率已达30％～40％,大
Xinbin County, Liaoning Province is located in the eastern mountainous area of Liaoning Province. The climate of the four seasons is distinct. The winter temperature can be as low as -25°C, and the summer temperature can reach as high as 25°CE. In the county’s construction project, roof insulation and slag, cement-expanded perlite and other loose materials are frequently used for roof insulation. These insulation materials have a high moisture content, moisture is trapped under the waterproof layer, and moisture does not evaporate. When the temperature is high in summer, the moisture in the insulation layer is gasified and expanded, and the leveling layer mortar and the waterproof linoleum are torn. The survey and statistics of the leakage of the roof in my county in recent years shows that the leakage rate of the roof has reached 30% to 40%.