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新型墙体材料冻融循环下的损伤研究
Study on damage of new-type wall materials under action of freeze-thaw cycle
【摘要】 对7种墙体材料进行了冻融循环试验。通过研究质量损失率、强度损失率与循环次数的关系,结合新型墙体材料冻融损伤失效过程,建立了新型墙体材料的冻融损伤计算模型,得出了损伤速度和损伤加速度。通过模型可预测新型墙体材料的冻融循环寿命,为新型墙体材料的冻融损伤计算提供依据。
【Abstract】 Freeze-thaw tests for seven kinds of wall materials were conducted.By studying relationship between rate of mass loss and cycle numbers or rate of strength loss and cycle numbers,in combination with the freeze-thaw damage failure process,freeze-thaw damage calculation model for new type wall materials was established and the damage speed and damage acceleration were obtained.Through modeling,the freeze-thaw cycle period of the new type wall materials can be predicted,which provides basis for its freeze-thaw damage calculation.
【关键词】 新型墙体材料;
冻融循环;
损伤;
数学模型;
【Key words】 new-type wall materials; freeze-thaw cycle; damage; mathematic model;
【Key words】 new-type wall materials; freeze-thaw cycle; damage; mathematic model;
【基金】 沈阳建筑大学结构工程省级重点实验室2007年度开发基金项目(JG200705);辽宁省墙改2009科技攻关项目(200901)
- 【文献出处】 新型建筑材料 ,New Building Materials , 编辑部邮箱 ,2010年05期
- 【分类号】TU50
- 【被引频次】11
- 【下载频次】220