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| 新型墙体材料冻融循环寿命时变可靠性 | |
| 引用本文： | 郑怡,李莉,许嘉龙,由世宽,回志峰,邱连强.新型墙体材料冻融循环寿命时变可靠性[J].中南大学学报(自然科学版),2011,42(11). |
| 作者姓名： | 郑怡 李莉 许嘉龙 由世宽 回志峰 邱连强 |
| 作者单位： | 1. 辽宁省建筑材料科学研究所,辽宁沈阳,110032;大连理工大学土木水利学院,辽宁大连,116023 2. 辽宁省建筑材料科学研究所,辽宁沈阳,110032;武汉理工大学材料科学与工程学院,湖北武汉,430070;沈阳建筑大学材料学院,辽宁沈阳,110168 3. 辽宁省建筑材料科学研究所,辽宁沈阳,110032 |
| 基金项目： | 国家"十一五"科技支撑计划重点项目，住房和城乡建设部2009科技计划攻关项目，沈阳建筑大学省级重点实验室2009年度开放基金资助项目，辽宁省2010年科学计划项目，沈阳市人才资源开发专项资金资助项目，沈阳市科学技术计划项目 |
| 摘 要： | 通过对6种新型墙体材料和烧结普通砖在不同冻融循环次数(0,25,50和75次)下的试验,研究新型墙体材料的质量损失率、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,建立新型墙体材料的冻融损伤时变可靠度计算模型.研究结果表明:以混凝土实心砖为例,随着时间的推移,混凝土实心砖的冻融循环时变可靠指标逐渐变小,变化趋势呈抛物线型.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,为维护部门提供决策依据,降低失效风险. |
| 关 键 词： | 新型墙体材料 冻融循环 寿命 时变可靠性 |
Service life of new-type walling materials under action of freeze-thaw cycle based on time-depending reliability |
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| ZHENG Yi,LI Li,XU Jia-long,YOU Shi-kuan,HUI Zhi-feng,QIU Lian-qiang.Service life of new-type walling materials under action of freeze-thaw cycle based on time-depending reliability[J].Journal of Central South University:Science and Technology,2011,42(11). | |
| Authors: | ZHENG Yi LI Li XU Jia-long YOU Shi-kuan HUI Zhi-feng QIU Lian-qiang |
| Institution: | ZHENG Yi1,2,LI Li1,3,4,XU Jia-long1,YOU Shi-kuan1,HUI Zhi-feng1,QIU Lian-qiang1 (1.Liaoning Building Materials Science Institute,Shenyang 110032,China,2.School of Water Conservancy & Civil Engineering,Dalian University of Technology,Dalian 116023,3.School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,4.School of Materials,Shenyang Jianzhu University,Shenyang 110168,China) |
| Abstract: | Freeze-thaw tests were made for six kinds of the new wall materials and clay brick,and the number of freeze-thaw cycles is 0,25,50 and 75.By studying relationship of rate of mass loss and cycle numbers or rate of strength loss and cycle numbers,calculating damaging model of new-type walling materials was found based on time-depending reliability under action of freeze-thaw cycle.The result shows that time-depending reliability index of concrete solid brick in freeze-thaw cycles is gradually changing smaller... |
| Keywords: | new-type walling materials freeze-thaw cycle life time-depending reliability |
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