| 盐冻作用下混凝土力学性能研究及灰色预测 |
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| 引用本文： | 徐存东,黄嵩,刘子金,李欣达,李智睿.盐冻作用下混凝土力学性能研究及灰色预测[J].混凝土与水泥制品,2021(5):6-10,32. |
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| 作者姓名： | 徐存东 黄嵩 刘子金 李欣达 李智睿 |
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| 作者单位： | 华北水利水电大学 水利学院,河南 郑州 450046;浙江省农村水利水电资源配置与调控关键技术重点实验室,浙江 杭州 310018;河南省水工结构安全工程技术研究中心,河南 郑州 450046;华北水利水电大学 水利学院,河南 郑州 450046;河南省水工结构安全工程技术研究中心,河南 郑州 450046 |
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| 基金项目： | 国家自然科学基金资助项目(51579102);河南省高校科技创新团队支持计划项目(19IRTSTHN030);中原科技创新领军人才支持计划项目(204200510048);河南省高等学校重点科研项目计划项目(20A570006)。 |
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| 摘 要： | 为探究混凝土的劣化规律,对混凝土的力学性能进行了预测,以试验室数据为基础,构建了各项力学性能指标的灰色GM(1,1)预测模型,预测各项指标的劣化规律。结果表明:以盐溶液作为冻融介质会加快试块的破坏,且不同盐溶液对试块的破坏程度存在一定差距;获得的灰色GM(1,1)预测模型精度满足要求,可用于预测灌区内混凝土建筑物的力学性能。研究成果可以为寒旱灌区混凝土建筑的寿命预测与后期维护提供参考,也可为不同类型混凝土的各项性能预测提供研究方法。
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| 关 键 词： | 冻融循环 灰色理论 质量损失 相对动弹性模量 抗压强度 |
Mechanical Property Research and Grey Prediction of Concrete Under Salt Freezing |
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| XU Cun-dong,HUANG Song,LIU Zi-jin,LI Xin-da,LI Zhi-rui.Mechanical Property Research and Grey Prediction of Concrete Under Salt Freezing[J].China Concrete and Cement Products,2021(5):6-10,32. |
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| Authors: | XU Cun-dong HUANG Song LIU Zi-jin LI Xin-da LI Zhi-rui |
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| Affiliation: | (School of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Key Laboratory for Technology in Rural Water Management of Zhejiang Province,Hangzhou 310018,China;Henan Provincial Hydraulic Structure Safety Engineering Research Center,Zhengzhou 450046,China) |
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| Abstract: | In order to find out the deterioration law of concrete and predict the durability of concrete a grey GM(1,1)prediction model of durability indexes was established based on laboratory test datas to predict the deterioration law of each index.The results show that using salt solution as freeze-thaw medium can accelerate the damage of test block.There is a certain gap between the damage degree of different salt solutions to test block.The accuracy of the grey GM(1,1)prediction model meets the requirements,and can be used to predict the durability of concrete buildings in irrigation districts.The research results can provide a reference for life prediction and later maintenance of concrete buildings in cold and arid irrigation areas,and also provide research methods for performance prediction of different types of concrete. |
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| Keywords: | Freeze-thaw cycle Grey theory Quality loss Relative dynamic elastic modulus Compressive strength |
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