Article(id=1322943039269908552, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322943027827848128, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20210311, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1619280000000, receivedDateStr=2021-04-25, revisedDate=1626451200000, revisedDateStr=2021-07-17, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343799654, onlineDateStr=2026-10-30, pubDate=1637337600000, pubDateStr=2021-11-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343799654, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343799654, creator=13701087609, updateTime=1793343799654, updator=13701087609, issue=Issue{id=1322943027827848128, tenantId=1146029695717560320, journalId=1263187385517883426, year='2021', volume='49', issue='11', pageStart='2313', pageEnd='2548', issueExtLink='null', onlineDate='null', pubDate='1637337600000', pubDateStr='2021-11-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343796927, creator='13701087609', updateTime=1793345952795, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322952070252343421, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322943027827848128, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322952070252343422, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322943027827848128, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=2322, endPage=2330, ext={EN=ArticleExt(id=1322943041467723851, articleId=1322943039269908552, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Impact Compressive Performance and Damage Evolution of Ultra-High Performance Concrete, columnId=1322943028415050689, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Issue on Ultra-HiHh HerHorHance Concrete Ⅱ, runingTitle=null, highlight=null, articleAbstract=

Ultra-high performance concrete (UHPC) with excellent performance was prepared with two kinds of ultra-fine copper-plated steel fibers with different shapes. The multiple high-speed impact compression experiments of UHPC were carried out by a split Hopkinson pressure bar. The effects of strain rate, impact times, steel fiber types and hybrid fibers on the impact resistance of UHPC were investigated. The dynamic damage evolution of UHPC under multiple impact was characterized by X-ray computed tomography and the damage degree of UHPC was quantitatively analyzed. The results show that the reinforcing effect of end hook steel fibers on UHPC is a slightly better than that of straight steel fibers, and the material with 1% straight steel fibers and 2% end hook steel fibers has the optimum static and dynamic mechanical properties. An improved dynamic increase factor model was proposed. It is indicated that the simulated data by this model are in reasonable agreement with the experimental results.

, authors=Zhidan RONG1, 2, Yali WANG1, 2, Maopeng JIAO1, 2, Jiaqi ZHANG1, 2, Hao CHEN1, 2, authorsList=Zhidan RONG, Yali WANG, Maopeng JIAO, Jiaqi ZHANG, Hao CHEN, authorCompany=null, correspAuthors=null, authorNote=

RONG Zhidan (1981-), male, Ph.D., Associate Professor. E-mail:

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掺2种不同形状的超细镀铜钢纤维,制备出性能优异的超高性能混凝土材料(UHPC),采用分离式Hopkinson压杆装置对UHPC材料进行了多次高速冲击压缩实验,研究了应变率、冲击次数、纤维种类及其混杂对该材料抗多次冲击性能的影响规律,采用X射线CT测试技术研究UHPC在多次冲击荷载作用下的动态损伤演变规律并对材料的损伤程度进行定量分析。结果表明:端勾型钢纤维对UHPC材料的增强、增韧效果略优于平直型钢纤维,掺加1%的平直型和2%端勾型钢纤维的材料具有最优异的静态和动态力学性能,提出了改进的动态增长因子模型解析式,与实验结果具有很好的吻合度。

, authors=戎志丹1, 2, 王亚利1, 2, 焦茂鹏1, 2, 张佳奇1, 2, 陈浩1, 2, authorsList=戎志丹, 王亚利, 焦茂鹏, 张佳奇, 陈浩, authorCompany=null, correspAuthors=null, authorNote=

戎志丹(1981—),男,博士,副教授。

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戎志丹(1981—),男,博士,副教授。

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超高性能混凝土的冲击压缩性能及损伤演变规律
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戎志丹 1, 2 , 王亚利 1, 2 , 焦茂鹏 1, 2 , 张佳奇 1, 2 , 陈浩 1, 2
硅酸盐学报 | 超高性能混凝土专题Ⅱ 2021,49(11): 2322-2330
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硅酸盐学报 |超高性能混凝土专题Ⅱ 2021 , 49 (11) : 2322 -2330
超高性能混凝土的冲击压缩性能及损伤演变规律
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戎志丹(1981—),男,博士,副教授。

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戎志丹1, 2 , 王亚利1, 2, 焦茂鹏1, 2, 张佳奇1, 2, 陈浩1, 2
作者信息
  • 1.东南大学材料科学与工程学院,南京 211189
  • 2.江苏省土木工程材料重点实验室,南京 211189
作者简介:

戎志丹(1981—),男,博士,副教授。

Impact Compressive Performance and Damage Evolution of Ultra-High Performance Concrete
Zhidan RONG1, 2 , Yali WANG1, 2, Maopeng JIAO1, 2, Jiaqi ZHANG1, 2, Hao CHEN1, 2
Affiliations
  • 1.College of Materials Science and Engineering, Southeast University, Nanjing 211189, China
  • 2.Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, China
  • RONG Zhidan (1981-), male, Ph.D., Associate Professor. E-mail:

出版时间: 2021-11-20 doi: 10.14062/j.issn.0454-5648.20210311
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掺2种不同形状的超细镀铜钢纤维,制备出性能优异的超高性能混凝土材料(UHPC),采用分离式Hopkinson压杆装置对UHPC材料进行了多次高速冲击压缩实验,研究了应变率、冲击次数、纤维种类及其混杂对该材料抗多次冲击性能的影响规律,采用X射线CT测试技术研究UHPC在多次冲击荷载作用下的动态损伤演变规律并对材料的损伤程度进行定量分析。结果表明:端勾型钢纤维对UHPC材料的增强、增韧效果略优于平直型钢纤维,掺加1%的平直型和2%端勾型钢纤维的材料具有最优异的静态和动态力学性能,提出了改进的动态增长因子模型解析式,与实验结果具有很好的吻合度。

超高性能混凝土  /  Hopkinson压杆  /  多次冲击  /  损伤程度  /  动态增长因子

Ultra-high performance concrete (UHPC) with excellent performance was prepared with two kinds of ultra-fine copper-plated steel fibers with different shapes. The multiple high-speed impact compression experiments of UHPC were carried out by a split Hopkinson pressure bar. The effects of strain rate, impact times, steel fiber types and hybrid fibers on the impact resistance of UHPC were investigated. The dynamic damage evolution of UHPC under multiple impact was characterized by X-ray computed tomography and the damage degree of UHPC was quantitatively analyzed. The results show that the reinforcing effect of end hook steel fibers on UHPC is a slightly better than that of straight steel fibers, and the material with 1% straight steel fibers and 2% end hook steel fibers has the optimum static and dynamic mechanical properties. An improved dynamic increase factor model was proposed. It is indicated that the simulated data by this model are in reasonable agreement with the experimental results.

ultra-high performance concrete  /  split Hopkinson pressure bar  /  multiple impacts  /  damage degree  /  dynamic increase factor
戎志丹, 王亚利, 焦茂鹏, 张佳奇, 陈浩. 超高性能混凝土的冲击压缩性能及损伤演变规律. 硅酸盐学报, 2021 , 49 (11) : 2322 -2330 . DOI: 10.14062/j.issn.0454-5648.20210311
Zhidan RONG, Yali WANG, Maopeng JIAO, Jiaqi ZHANG, Hao CHEN. Impact Compressive Performance and Damage Evolution of Ultra-High Performance Concrete[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (11) : 2322 -2330 . DOI: 10.14062/j.issn.0454-5648.20210311
  • 国家重点研发计划项目(2018YFC0705400)
  • 国家自然科学基金项目(51678142)
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doi: 10.14062/j.issn.0454-5648.20210311
  • 接收时间:2021-04-25
  • 首发时间:2026-10-30
  • 出版时间:2021-11-20
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  • 收稿日期:2021-04-25
  • 修回日期:2021-07-17
基金
国家重点研发计划项目(2018YFC0705400)
国家自然科学基金项目(51678142)
作者信息
    1.东南大学材料科学与工程学院,南京 211189
    2.江苏省土木工程材料重点实验室,南京 211189
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
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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