Article(id=1322636275161616578, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322636274364698818, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20200128, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1584633600000, receivedDateStr=2020-03-20, revisedDate=1595520000000, revisedDateStr=2020-07-24, acceptedDate=null, acceptedDateStr=null, onlineDate=1793270661392, onlineDateStr=2026-10-29, pubDate=1605801600000, pubDateStr=2020-11-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793270661392, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793270661392, creator=13701087609, updateTime=1793270661392, updator=13701087609, issue=Issue{id=1322636274364698818, tenantId=1146029695717560320, journalId=1263187385517883426, year='2020', volume='48', issue='11', pageStart='1689', pageEnd='1864', issueExtLink='null', onlineDate='null', pubDate='1605801600000', pubDateStr='2020-11-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793270661202, creator='13701087609', updateTime=1793277186220, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322663642319930111, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322636274364698818, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322663642319930112, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322636274364698818, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1756, endPage=1764, ext={EN=ArticleExt(id=1322636275832705220, articleId=1322636275161616578, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Reinforcement of Directionally Distributed Steel Fibers on Ultrahigh Performance Concrete, columnId=1322636275505549507, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Issue for Ultra-high Performance Concrete Ⅱ, runingTitle=null, highlight=null, articleAbstract=

Fine and short steel fiber was orientally distributed in the paste to prepare a ultra-high performance concrete (UHPC). The compressive strength, flexural strength, flexural tensile strength, and the interfacial bonding strength between steel fiber and UHPC matrix of the directionally distributed steel fiber UHPC (D-UHPC) and the disorderly distributed steel fiber UHPC (L-UHPC) at different volume contents of steel fiber were analyzed. The results demonstrate that the compressive strength of L-UHPC firstly increases and then decreases, and the compressive strength of D-UHPC continues to increase as the volume content of steel fiber increases. The flexural strength of both types of UHPCs improves with the increase of the volume content of steel fiber. At the same volume content of steel fiber, the flexural strength of D-UHPC is greater than that of L-UHPC. In the tensile fracture of the specimen, the crack width produced by D-UHPC is narrower than that of L-UHPC, and D-UHPC has more small cracks by dispersing and absorbing loads. The initial cracking deflection, ultimate tensile deflection, initial cracking strength, ultimate tensile strength, and toughness index of D-UHPC all increase, compared to that of L-UHPC at the same volume content of steel fiber. Increasing the embedding angle of the steel fiber decreases the peak value of the pull-out load and increases the deflection corresponding to the peak value of the load, thus indicating that the direction of the steel fiber affects the mechanical properties of UHPC.

, authors=Hongxiang GOU, Hongbo ZHU, Haiyun ZHOU, Zhenghong YANG, authorsList=Hongxiang GOU, Hongbo ZHU, Haiyun ZHOU, Zhenghong YANG, authorCompany=null, correspAuthors=Hongbo ZHU, authorNote=

GOU Hongxiang (1995-), male, Doctoral candidate. E-mail:

, correspAuthorsNote=
ZHU Hongbo (1965-), male, Ph.D., Associate Professor. E-mail:
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将细短钢纤维定向分布在水泥浆中制备超高性能混凝土(UHPC),在不同的钢纤维体积掺量下,对比分析了定向分布钢纤维UHPC(D-UHPC)与乱向分布钢纤维UHPC(L-UHPC)的抗压、抗折和弯曲抗拉等强度,通过弯曲韧性、钢纤维与UHPC基体的界面黏结强度及宏观、细观照片来揭示其增强作用机理。结果表明:随着钢纤维掺量的增加,L-UHPC的抗压强度先增大后减小,D-UHPC的抗压强度则持续增大;两种UHPC的抗折强度均随着钢纤维体积掺量的增加而不断增大;在相同的钢纤维体积掺量下,D-UHPC的抗折强度均比L-UHPC的更高;试样受弯断裂过程中,D-UHPC所产生的裂缝宽度比L-UHPC的更窄,且出现了更多细小裂缝,可通过分散吸收荷载而表现出更高的弯曲韧性;D-UHPC的初裂挠度、极限抗拉挠度、初裂强度、极限抗拉强度和韧性指数在相同的钢纤维体积掺量时均比L-UHPC的有大幅度增加;钢纤维的埋入角越大,拔出荷载峰值越小,且荷载峰值对应的挠度越大,显示出钢纤维方向对UHPC力学性能的显著影响。

, authors=苟鸿翔, 朱洪波, 周海云, 杨正宏, authorsList=苟鸿翔, 朱洪波, 周海云, 杨正宏, authorCompany=null, correspAuthors=朱洪波, authorNote=

苟鸿翔(1995—),男,硕士研究生。

, correspAuthorsNote=
朱洪波(1965—),男,博士,副教授。
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GOU Hongxiang (1995-), male, Doctoral candidate. E-mail:

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苟鸿翔(1995—),男,硕士研究生。

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苟鸿翔(1995—),男,硕士研究生。

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定向分布钢纤维对超高性能混凝土的增强作用
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苟鸿翔 , 朱洪波 , 周海云 , 杨正宏
硅酸盐学报 | 超高性能混凝土专题Ⅱ 2020,48(11): 1756-1764
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硅酸盐学报 |超高性能混凝土专题Ⅱ 2020 , 48 (11) : 1756 -1764
定向分布钢纤维对超高性能混凝土的增强作用
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苟鸿翔 , 朱洪波 , 周海云, 杨正宏
作者信息
  • 先进土木工程材料教育部重点实验室,同济大学,上海 201804
通讯作者:
朱洪波(1965—),男,博士,副教授。
作者简介:

苟鸿翔(1995—),男,硕士研究生。

Reinforcement of Directionally Distributed Steel Fibers on Ultrahigh Performance Concrete
Hongxiang GOU , Hongbo ZHU , Haiyun ZHOU, Zhenghong YANG
Affiliations
  • Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804, China
  • Corresponding Author:
    ZHU Hongbo (1965-), male, Ph.D., Associate Professor. E-mail:

    GOU Hongxiang (1995-), male, Doctoral candidate. E-mail:

出版时间: 2020-11-20 doi: 10.14062/j.issn.0454-5648.20200128
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将细短钢纤维定向分布在水泥浆中制备超高性能混凝土(UHPC),在不同的钢纤维体积掺量下,对比分析了定向分布钢纤维UHPC(D-UHPC)与乱向分布钢纤维UHPC(L-UHPC)的抗压、抗折和弯曲抗拉等强度,通过弯曲韧性、钢纤维与UHPC基体的界面黏结强度及宏观、细观照片来揭示其增强作用机理。结果表明:随着钢纤维掺量的增加,L-UHPC的抗压强度先增大后减小,D-UHPC的抗压强度则持续增大;两种UHPC的抗折强度均随着钢纤维体积掺量的增加而不断增大;在相同的钢纤维体积掺量下,D-UHPC的抗折强度均比L-UHPC的更高;试样受弯断裂过程中,D-UHPC所产生的裂缝宽度比L-UHPC的更窄,且出现了更多细小裂缝,可通过分散吸收荷载而表现出更高的弯曲韧性;D-UHPC的初裂挠度、极限抗拉挠度、初裂强度、极限抗拉强度和韧性指数在相同的钢纤维体积掺量时均比L-UHPC的有大幅度增加;钢纤维的埋入角越大,拔出荷载峰值越小,且荷载峰值对应的挠度越大,显示出钢纤维方向对UHPC力学性能的显著影响。

钢纤维  /  定向分布  /  超高性能混凝土  /  力学性能  /  细观分析

Fine and short steel fiber was orientally distributed in the paste to prepare a ultra-high performance concrete (UHPC). The compressive strength, flexural strength, flexural tensile strength, and the interfacial bonding strength between steel fiber and UHPC matrix of the directionally distributed steel fiber UHPC (D-UHPC) and the disorderly distributed steel fiber UHPC (L-UHPC) at different volume contents of steel fiber were analyzed. The results demonstrate that the compressive strength of L-UHPC firstly increases and then decreases, and the compressive strength of D-UHPC continues to increase as the volume content of steel fiber increases. The flexural strength of both types of UHPCs improves with the increase of the volume content of steel fiber. At the same volume content of steel fiber, the flexural strength of D-UHPC is greater than that of L-UHPC. In the tensile fracture of the specimen, the crack width produced by D-UHPC is narrower than that of L-UHPC, and D-UHPC has more small cracks by dispersing and absorbing loads. The initial cracking deflection, ultimate tensile deflection, initial cracking strength, ultimate tensile strength, and toughness index of D-UHPC all increase, compared to that of L-UHPC at the same volume content of steel fiber. Increasing the embedding angle of the steel fiber decreases the peak value of the pull-out load and increases the deflection corresponding to the peak value of the load, thus indicating that the direction of the steel fiber affects the mechanical properties of UHPC.

steel fiber  /  orientation distribution  /  ultra-high performance concrete  /  mechanical properties  /  mesoscopic analysis
苟鸿翔, 朱洪波, 周海云, 杨正宏. 定向分布钢纤维对超高性能混凝土的增强作用. 硅酸盐学报, 2020 , 48 (11) : 1756 -1764 . DOI: 10.14062/j.issn.0454-5648.20200128
Hongxiang GOU, Hongbo ZHU, Haiyun ZHOU, Zhenghong YANG. Reinforcement of Directionally Distributed Steel Fibers on Ultrahigh Performance Concrete[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (11) : 1756 -1764 . DOI: 10.14062/j.issn.0454-5648.20200128
  • 国家“十三五重点研发计划”(2018YFC0705400; 2018YFD1101002)
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2020年第48卷第11期
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doi: 10.14062/j.issn.0454-5648.20200128
  • 接收时间:2020-03-20
  • 首发时间:2026-10-29
  • 出版时间:2020-11-20
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  • 收稿日期:2020-03-20
  • 修回日期:2020-07-24
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国家“十三五重点研发计划”(2018YFC0705400; 2018YFD1101002)
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    先进土木工程材料教育部重点实验室,同济大学,上海 201804

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朱洪波(1965—),男,博士,副教授。
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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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