Lanqin Wang, Xiaofeng Han, Li Tian, Penggang Wang, Xiaoguang Sun
{"title":"冻害对工程胶凝复合材料性能的影响","authors":"Lanqin Wang, Xiaofeng Han, Li Tian, Penggang Wang, Xiaoguang Sun","doi":"10.3151/jact.21.971","DOIUrl":null,"url":null,"abstract":"</p><p>Although engineered cementitious composites (ECC) exhibit tensile strain hardening and multiple microcracking characteristics, whether the performance of ECC changes obviously under freezing-thawing conditions is important for the design and maintenance of buildings in the areas with freeze-thaw exposure. Results indicates that, as the number of freeze-thawing cycles increase, the PVA fiber/matrix interfacial bonding strength decreases, more fibers can be pulled out, thereby resulting in an increasing deformation on ECC. The results of water capillary absorption, chloride penetration and carbonation on ECC reveal that the frost damage has little effect on ECC. In addition, the steel bar-normal concrete interfacial ultimate bonding strength decreases linearly with the increase in the number of freeze-thawing cycles, the specimen splits failure. However, for the ECC, the steel bar-ECC interfacial ultimate bonding strength decreases with the increase in the number of freeze-thawing cycles, the pull-out failure occurs.</p>\n<p></p>","PeriodicalId":14868,"journal":{"name":"Journal of Advanced Concrete Technology","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Frost Damage on Performance of Engineered Cementitious Composites\",\"authors\":\"Lanqin Wang, Xiaofeng Han, Li Tian, Penggang Wang, Xiaoguang Sun\",\"doi\":\"10.3151/jact.21.971\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"</p><p>Although engineered cementitious composites (ECC) exhibit tensile strain hardening and multiple microcracking characteristics, whether the performance of ECC changes obviously under freezing-thawing conditions is important for the design and maintenance of buildings in the areas with freeze-thaw exposure. Results indicates that, as the number of freeze-thawing cycles increase, the PVA fiber/matrix interfacial bonding strength decreases, more fibers can be pulled out, thereby resulting in an increasing deformation on ECC. The results of water capillary absorption, chloride penetration and carbonation on ECC reveal that the frost damage has little effect on ECC. In addition, the steel bar-normal concrete interfacial ultimate bonding strength decreases linearly with the increase in the number of freeze-thawing cycles, the specimen splits failure. However, for the ECC, the steel bar-ECC interfacial ultimate bonding strength decreases with the increase in the number of freeze-thawing cycles, the pull-out failure occurs.</p>\\n<p></p>\",\"PeriodicalId\":14868,\"journal\":{\"name\":\"Journal of Advanced Concrete Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2023-12-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Advanced Concrete Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.3151/jact.21.971\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Advanced Concrete Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.3151/jact.21.971","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
Influence of Frost Damage on Performance of Engineered Cementitious Composites
Although engineered cementitious composites (ECC) exhibit tensile strain hardening and multiple microcracking characteristics, whether the performance of ECC changes obviously under freezing-thawing conditions is important for the design and maintenance of buildings in the areas with freeze-thaw exposure. Results indicates that, as the number of freeze-thawing cycles increase, the PVA fiber/matrix interfacial bonding strength decreases, more fibers can be pulled out, thereby resulting in an increasing deformation on ECC. The results of water capillary absorption, chloride penetration and carbonation on ECC reveal that the frost damage has little effect on ECC. In addition, the steel bar-normal concrete interfacial ultimate bonding strength decreases linearly with the increase in the number of freeze-thawing cycles, the specimen splits failure. However, for the ECC, the steel bar-ECC interfacial ultimate bonding strength decreases with the increase in the number of freeze-thawing cycles, the pull-out failure occurs.
期刊介绍:
JACT is fast. Only 5 to 7 months from submission to publishing thanks to electronic file exchange between you, the reviewers and the editors.
JACT is high quality. Peer-reviewed by internationally renowned experts who return review comments to ensure the highest possible quality.
JACT is transparent. The status of your manuscript from submission to publishing can be viewed on our website, greatly reducing the frustration of being kept in the dark, possibly for over a year in the case of some journals.
JACT is cost-effective. Submission and subscription are free of charge . Full-text PDF files are available for the authors to open at their web sites.
Scope:
*Materials:
-Material properties
-Fresh concrete
-Hardened concrete
-High performance concrete
-Development of new materials
-Fiber reinforcement
*Maintenance and Rehabilitation:
-Durability and repair
-Strengthening/Rehabilitation
-LCC for concrete structures
-Environmant conscious materials
*Structures:
-Design and construction of RC and PC Structures
-Seismic design
-Safety against environmental disasters
-Failure mechanism and non-linear analysis/modeling
-Composite and mixed structures
*Other:
-Monitoring
-Aesthetics of concrete structures
-Other concrete related topics