冻融条件下XPS外保温系统粘结性能退化机理
首发时间:2011-02-25
摘要:本文介绍我国几种常用的外墙外保温技术及保温层与结构层联结固定方式,并详细分析其粘结机理。保温层与结构层的粘结性能是外墙外保温系统的关键技术,冻融循环交替作用是导致两者粘结机理退化的主要因素,本文从化学作用与物理作用两个方面分析了冻融循环条件下粘结层与保温板粘结界面力学作用退化机理,提出"嵌固作用"的概念,推导出冻融循环作用下粘结作用逐步退化的数学模型,为XPS外保温技术在工程应用中提供理论基础。
关键词: 外墙外保温系统 粘结机理 冻融循环 退化机理 数学模型
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Mechanism of bonding degradation of XPS exterior insulation system under freeze-thaw conditions
Abstract:This paper introducted several kinds of technology of exterior insulation system and detailed analyzed the bonding mechanism.Bonding behavior between XPS insulation board layer and structure layer was a key technology for exterior insulation system. Freeze-thaw cycle became the main factor of leading to the degradation of bonding mechanism.This paper mainly studied degradation of the bonding mechanism between XPS insulation board layer and structure layer from the angles of chemical and physical effects and proposed the conception of embedded effect.The mathematical model of the degradation of the bonding mechanism under freeze-thaw conditions was proposed, which provided theoretical basis for the application of XPS insulating boards bonding.
Keywords: external thermal insulation system bonding mechanism freeze-thaw cycle degeneration mechanism mathematical model
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No.4410843569065129****
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