Article(id=1223190876571161207, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223190866320278179, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20222032, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1664294400000, receivedDateStr=2022-09-28, revisedDate=1668355200000, revisedDateStr=2022-11-14, acceptedDate=null, acceptedDateStr=null, onlineDate=1769561030762, onlineDateStr=2026-01-28, pubDate=1695571200000, pubDateStr=2023-09-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769561030762, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769561030762, creator=13701087609, updateTime=1769561030762, updator=13701087609, issue=Issue{id=1223190866320278179, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='9', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769561028318, creator=13701087609, updateTime=1769562015483, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223195006870082478, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223190866320278179, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223195006870082479, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223190866320278179, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=134, endPage=138, ext={EN=ArticleExt(id=1223190877418410677, articleId=1223190876571161207, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Influence of Salt Freezing Cycle on Mechanical Properties of Concrete and Its Life Prediction, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

In view of the problem of rapid durability deterioration and the service reliability reduction of concrete structure caused by saline ions erosion and freeze-thaw coupling in cold and drought irrigation area in northwest China, based on the rapid indoor freeze-thaw test, mechanical property change of clean water, 3%NaCl solution, 5%Na2SO4 solution was studied in the process of freeze-thaw. The freeze-thaw damage model was established to analyze the damage degree of relative dynamic elastic modulus of concrete block for three kinds of freeze-thaw mediums. The Weibull life prediction model was used to predict the life of test specimen. The results show that the mass loss, compressive strength and dynamic elastic modulus of the concrete mass damage sizes are 3%NaCl> 5%Na2SO4 > clean water; According to Weibull life prediction model, the fitting parameters b and C were obtained, and the correlation coefficient R2 is above 0.9; The prediction results of model life are consistent with the mechanical performance test results at different operating conditions; The mass loss, compressive strength and dynamic elastic modulus life prediction of concrete under three freeze-thaw mediums are clear water> 5% Na2SO4>3% NaCl. It can be seen that in the environment of freezing-melting and thawing erosion, $\text{SO}^{2-}_4$ erosion degree is greater than Cl- erosion, and the clean water erosion degree is minimal. The research results can provide a theoretical basis for the mechanical performance characteristics research and later maintenance of concrete in cold and drought irrigation areas.

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针对西北寒旱灌区混凝土结构因遭受盐离子侵蚀与冻融耦合作用导致耐久性快速劣化及服役可靠性降低的问题,基于室内快速冻融试验,研究以清水、3%NaCl溶液、5%Na2SO4溶液为介质在冻融过程中的力学性能变化,同时建立冻融损伤模型分析了3种不同冻融介质下混凝土试块相对动弹性模量的损伤度,并采用威布尔寿命预测模型预测试块寿命。研究结果表明,3种不同冻融介质中的混凝土试块,其质量损失、抗压强度及动弹性模量的损伤度大小为3%NaCl>5%Na2SO4>清水;根据威布尔寿命预测模型得到拟合参数bC的值且相关系数R2均在0.9以上,模型寿命预测结果与不同工况下混凝土试块力学性能试验结果相一致,3种冻融介质下混凝土质量损失、抗压强度及动弹性模量寿命预测表现为清水>5%Na2SO4>3%NaCl。可见,在冻融侵蚀环境下,$\text{SO}^{2-}_4$侵蚀比Cl-侵蚀程度大,清水侵蚀程度最小,研究成果可为寒旱灌区混凝土力学性能特征研究及后期维护提供理论依据。

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徐存东(1972-),男,博士、教授,研究方向为水工结构优化设计和耐久性,E-mail:

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徐存东(1972-),男,博士、教授,研究方向为水工结构优化设计和耐久性,E-mail:

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徐存东(1972-),男,博士、教授,研究方向为水工结构优化设计和耐久性,E-mail:

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盐冻循环对混凝土力学性能的影响及寿命预测
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徐存东 1, 2, 3 , 王海若 1 , 陈家豪 1, 2 , 李准 1, 2 , 徐慧 1 , 訾亚辉 1
水电能源科学 | 水利水电工程 2023,41(9): 134-138
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水电能源科学 | 水利水电工程 2023, 41(9): 134-138
盐冻循环对混凝土力学性能的影响及寿命预测
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徐存东1, 2, 3 , 王海若1, 陈家豪1, 2, 李准1, 2, 徐慧1, 訾亚辉1
作者信息
  • 1.华北水利水电大学水利学院,河南 郑州 450046
  • 2.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
  • 3.河南省水工结构安全工程技术研究中心,河南 郑州 450045
  • 徐存东(1972-),男,博士、教授,研究方向为水工结构优化设计和耐久性,E-mail:

Influence of Salt Freezing Cycle on Mechanical Properties of Concrete and Its Life Prediction
Cun-dong XU1, 2, 3 , Hai-ruo WANG1, Jia-hao CHEN1, 2, Zhun LI1, 2, Hui XU1, Ya-hui ZI1
Affiliations
  • 1.School of Water Conservancy, North China University of Water Resources and Electric Hydropower, Zhengzhou 450046, China
  • 2.Key Laboratory for Technology in Rural Water Management of Zhejiang Province, Hangzhou 310018, China
  • 3.Henan Provincal Hydraulic Structure Safety Engineering Research Center, Zhengzhou 450045, China
出版时间: 2023-09-25 doi: 10.20040/j.cnki.1000-7709.2023.20222032
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针对西北寒旱灌区混凝土结构因遭受盐离子侵蚀与冻融耦合作用导致耐久性快速劣化及服役可靠性降低的问题,基于室内快速冻融试验,研究以清水、3%NaCl溶液、5%Na2SO4溶液为介质在冻融过程中的力学性能变化,同时建立冻融损伤模型分析了3种不同冻融介质下混凝土试块相对动弹性模量的损伤度,并采用威布尔寿命预测模型预测试块寿命。研究结果表明,3种不同冻融介质中的混凝土试块,其质量损失、抗压强度及动弹性模量的损伤度大小为3%NaCl>5%Na2SO4>清水;根据威布尔寿命预测模型得到拟合参数bC的值且相关系数R2均在0.9以上,模型寿命预测结果与不同工况下混凝土试块力学性能试验结果相一致,3种冻融介质下混凝土质量损失、抗压强度及动弹性模量寿命预测表现为清水>5%Na2SO4>3%NaCl。可见,在冻融侵蚀环境下,$\text{SO}^{2-}_4$侵蚀比Cl-侵蚀程度大,清水侵蚀程度最小,研究成果可为寒旱灌区混凝土力学性能特征研究及后期维护提供理论依据。

盐冻  /  混凝土  /  力学性能  /  威布尔模型  /  寿命预测

In view of the problem of rapid durability deterioration and the service reliability reduction of concrete structure caused by saline ions erosion and freeze-thaw coupling in cold and drought irrigation area in northwest China, based on the rapid indoor freeze-thaw test, mechanical property change of clean water, 3%NaCl solution, 5%Na2SO4 solution was studied in the process of freeze-thaw. The freeze-thaw damage model was established to analyze the damage degree of relative dynamic elastic modulus of concrete block for three kinds of freeze-thaw mediums. The Weibull life prediction model was used to predict the life of test specimen. The results show that the mass loss, compressive strength and dynamic elastic modulus of the concrete mass damage sizes are 3%NaCl> 5%Na2SO4 > clean water; According to Weibull life prediction model, the fitting parameters b and C were obtained, and the correlation coefficient R2 is above 0.9; The prediction results of model life are consistent with the mechanical performance test results at different operating conditions; The mass loss, compressive strength and dynamic elastic modulus life prediction of concrete under three freeze-thaw mediums are clear water> 5% Na2SO4>3% NaCl. It can be seen that in the environment of freezing-melting and thawing erosion, $\text{SO}^{2-}_4$ erosion degree is greater than Cl- erosion, and the clean water erosion degree is minimal. The research results can provide a theoretical basis for the mechanical performance characteristics research and later maintenance of concrete in cold and drought irrigation areas.

salt freeze  /  concrete  /  mechanical properties  /  Weibull model  /  life prediction
徐存东, 王海若, 陈家豪, 李准, 徐慧, 訾亚辉. 盐冻循环对混凝土力学性能的影响及寿命预测. 水电能源科学, 2023 , 41 (9) : 134 -138 . DOI: 10.20040/j.cnki.1000-7709.2023.20222032
Cun-dong XU, Hai-ruo WANG, Jia-hao CHEN, Zhun LI, Hui XU, Ya-hui ZI. Influence of Salt Freezing Cycle on Mechanical Properties of Concrete and Its Life Prediction[J]. Water Resources and Power, 2023 , 41 (9) : 134 -138 . DOI: 10.20040/j.cnki.1000-7709.2023.20222032
  • 国家自然科学基金项目(51579102)
  • 河南省高校科技创新团队支持计划(19IRTSTHN030)
  • 中原科技创新领军人才支持计划(204200510048)
  • 河南省科技攻关项目(212102310273)
  • 河南省高等学校重点科研项目计划(20A570006)
  • 浙江省重点研发计划(2021C03019)
2023年第41卷第9期
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doi: 10.20040/j.cnki.1000-7709.2023.20222032
  • 接收时间:2022-09-28
  • 首发时间:2026-01-28
  • 出版时间:2023-09-25
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  • 收稿日期:2022-09-28
  • 修回日期:2022-11-14
基金
国家自然科学基金项目(51579102)
河南省高校科技创新团队支持计划(19IRTSTHN030)
中原科技创新领军人才支持计划(204200510048)
河南省科技攻关项目(212102310273)
河南省高等学校重点科研项目计划(20A570006)
浙江省重点研发计划(2021C03019)
作者信息
    1.华北水利水电大学水利学院,河南 郑州 450046
    2.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
    3.河南省水工结构安全工程技术研究中心,河南 郑州 450045
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https://castjournals.cast.org.cn/joweb/sdnykx/CN/10.20040/j.cnki.1000-7709.2023.20222032
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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