Article(id=1243220382174524194, tenantId=1146029695717560320, journalId=1242844143416819734, issueId=1243220377556595432, articleNumber=null, orderNo=null, doi=10.15959/j.cnki.0254-0053.2025.03.005, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1745769600000, receivedDateStr=2025-04-28, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774336437028, onlineDateStr=2026-03-24, pubDate=1758729600000, pubDateStr=2025-09-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774336437028, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774336437028, creator=13701087609, updateTime=1774336437028, updator=13701087609, issue=Issue{id=1243220377556595432, tenantId=1146029695717560320, journalId=1242844143416819734, year='2025', volume='46', issue='3', pageStart='541', pageEnd='810', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1774336435926, creator=13701087609, updateTime=1774336648182, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1243221267898282005, tenantId=1146029695717560320, journalId=1242844143416819734, issueId=1243220377556595432, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243221267898282006, tenantId=1146029695717560320, journalId=1242844143416819734, issueId=1243220377556595432, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=614, endPage=630, ext={EN=ArticleExt(id=1243220382921110315, articleId=1243220382174524194, tenantId=1146029695717560320, journalId=1242844143416819734, language=EN, title=Fracture Mechanism Evaluation of UHPC-NC Interface Based on Multiscale Interface Bond Characterization and Numerical Simulation, columnId=null, journalTitle=Chinese Quarterly of Mechanics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To elucidate the complex bonding and fracture mechanisms at the interface between Ultra-High Performance Concrete (UHPC) and Normal Concrete (NC), this study systematically investigates how interfacial roughness and mesoscale structural characteristics influence interface mechanical performance. Four interface treatments (i.e., smooth surface, high-pressure water jetting, sandblasting, and chiseling) were comparatively analyzed through direct tension and shear tests, complemented by quantitative surface roughness characterization using laser scanning. Furthermore, X-ray Computed Tomography (X-CT) facilitated the three-dimensional reconstruction of UHPC-NC mesoscale structures, enabling advanced segmentation of pores, fibers, and other structural phases via deep learning algorithms. Multi-scale finite element modeling based on X-CT data simulated the damage evolution and crack propagation at the interface. Results indicate that chiseling significantly increased interfacial roughness, yielding substantial improvements in direct tensile and shear bond strengths by 123% and 126%, respectively, relative to the smooth surface. X-CT analysis revealed a distinct hydration transition zone at the interface, significantly influencing chemical bonding and exhibiting notably lower porosity compared to the NC matrix. Steel fibers from UHPC penetrated into the NC substrate, creating enhanced mechanical interlocking effects. Numerical simulations demonstrated that interface failure mechanisms are jointly governed by tensile failure within the NC substrate and crack propagation through the interfacial transition zone (ITZ), consistent with experimental observations of mixed-mode fractures. Overall, enhanced interfacial roughness improved bonding strength through both mechanical interlocking and chemical adhesion, while mesoscale structural defects critically influenced crack development pathways. The proposed multi-scale analytical approach provides comprehensive methodological support for optimizing the design and rehabilitation of concrete interfaces in engineering practice.
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针对超高性能混凝土(Ultra-High Performance Concrete,UHPC)与普通混凝土(Normal Concrete,NC)界面粘结性能与断裂行为的复杂机制,为了揭示界面粗糙度与介观结构特征对界面力学性能的影响规律,本文通过界面直接拉伸与直接剪切试验对比光滑、高压水枪、喷砂和凿毛四种界面处理方法的粘结强度,结合激光扫描定量表征界面粗糙度;利用X射线计算机断层扫描(X-CT)重构UHPC-NC三维介观结构,采用深度学习算法分割孔隙、纤维等特征;建立基于X-CT数据的多尺度有限元模型,模拟界面损伤演化与裂纹扩展过程.结果显示,凿毛处理界面粗糙度最高,其直接抗拉与直接抗剪强度分别较光滑界面提升123%和126%;X-CT显示界面存在水化过渡区,其影响着界面化学粘结力,且孔隙率较NC基体显著降低,钢纤维向NC基体渗透形成机械咬合;有限元模拟表明界面失效由NC基体拉伸破坏与界面过渡区(Interfacial Transition Zone,ITZ)裂纹扩展共同主导,混合破坏模式预测结果与试验观察一致.界面粗糙度通过增强机械咬合与化学键合提升粘结强度,介观结构缺陷调控裂纹扩展路径,研究成果为混凝土界面优化设计与修复工程提供了多尺度分析方法支撑.
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, authorsList=王洋辰, 王久祎, 王艳芝, 乔丕忠, 聂柯夫, 贾磊)}, authors=[Author(id=1243220394111512647, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wangyangchen@sjtu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1243220394237341776, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, authorId=1243220394111512647, language=EN, stringName=Yangchen WANG, firstName=Yangchen, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.上海交通大学 船舶海洋与建筑工程学院,上海 200240, bio={"content":"
王洋辰,硕士生.研究方向:混凝土多尺度与温控模拟.E-mail:wangyangchen@sjtu.edu.cn
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王洋辰,硕士生.研究方向:混凝土多尺度与温控模拟.E-mail:wangyangchen@sjtu.edu.cn
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2.School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1243220396879753351, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, authorId=1243220395839565945, language=CN, stringName=王艳芝, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.北京交通大学 土木工程学院,北京 100044, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1243220393411063850, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, xref=2., ext=[AuthorCompanyExt(id=1243220393419452460, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, companyId=1243220393411063850, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.School of Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1243220397605367970, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, authorId=1243220397076885650, language=CN, stringName=乔丕忠, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.School of Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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1.上海交通大学 船舶海洋与建筑工程学院,上海 200240
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Interfacial strength tests of UHPC-NC, figureFileSmall=1YFR4AUnFHgU/6M0x+cBOw==, figureFileBig=1IygCpVDbW4v3LFmHLqIOg==, tableContent=null), ArticleFig(id=1243220401673842972, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图1, caption=
UHPC-NC界面粘结强度试验, figureFileSmall=1YFR4AUnFHgU/6M0x+cBOw==, figureFileBig=1IygCpVDbW4v3LFmHLqIOg==, tableContent=null), ArticleFig(id=1243220401908724007, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.2, caption=
Interface treatment methods for direct tension specimens, figureFileSmall=F+kQeqGZ9dJX5b4n837Q3A==, figureFileBig=+/Ht84CYDiN4IFSrLeqMcg==, tableContent=null), ArticleFig(id=1243220402110050603, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图2, caption=
直接拉伸试件界面处理方式示意图, figureFileSmall=F+kQeqGZ9dJX5b4n837Q3A==, figureFileBig=+/Ht84CYDiN4IFSrLeqMcg==, tableContent=null), ArticleFig(id=1243220402382680366, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.3, caption=
CT scanning of UHPC-NC specimens, figureFileSmall=6yquVYzeRxJ26/b9Ezr/ag==, figureFileBig=ctpz0AEQdm2MPEReVQyWvA==, tableContent=null), ArticleFig(id=1243220402533675314, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图3, caption=
UHPC-NC样品的CT扫描, figureFileSmall=6yquVYzeRxJ26/b9Ezr/ag==, figureFileBig=ctpz0AEQdm2MPEReVQyWvA==, tableContent=null), ArticleFig(id=1243220402646921530, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.4, caption=
Filtered and Denoised CT Slices of UHPC-NC, figureFileSmall=TlKC4rJVFWDpHXW5AGcxWw==, figureFileBig=tQgLdX0aG/efj2UzuZRlRg==, tableContent=null), ArticleFig(id=1243220402965688639, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图4, caption=
滤波降噪后UHPC-NC的CT切片, figureFileSmall=TlKC4rJVFWDpHXW5AGcxWw==, figureFileBig=tQgLdX0aG/efj2UzuZRlRg==, tableContent=null), ArticleFig(id=1243220403057963331, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.5, caption=
Complete 3D model of UHPC-NC, figureFileSmall=ouLmsVYQrDkQAXjfAlQArw==, figureFileBig=hNPKwP+0cT2OSWUt6D9xfw==, tableContent=null), ArticleFig(id=1243220403162820938, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图5, caption=
UHPC-NC的完整三维模型, figureFileSmall=ouLmsVYQrDkQAXjfAlQArw==, figureFileBig=hNPKwP+0cT2OSWUt6D9xfw==, tableContent=null), ArticleFig(id=1243220403347370318, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.6, caption=
Grayscale thresholds for distinct material phases, figureFileSmall=eY3A3GiMg9u56wiD4SN6oA==, figureFileBig=z7WBg+DngPg8jiAv0lABog==, tableContent=null), ArticleFig(id=1243220403498365270, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图6, caption=
不同属相材料的灰度阈值, figureFileSmall=eY3A3GiMg9u56wiD4SN6oA==, figureFileBig=z7WBg+DngPg8jiAv0lABog==, tableContent=null), ArticleFig(id=1243220403615805793, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.7, caption=
Threshold segmentation of steel fibers and pores, figureFileSmall=Uqen0HE5JbSB7n6K0fkXMA==, figureFileBig=I6zgDoIdwskZQtppk1Ubjw==, tableContent=null), ArticleFig(id=1243220403804549485, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图7, caption=
钢纤维和孔隙的阈值分割, figureFileSmall=Uqen0HE5JbSB7n6K0fkXMA==, figureFileBig=I6zgDoIdwskZQtppk1Ubjw==, tableContent=null), ArticleFig(id=1243220403934572918, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.8, caption=
Grayscale segmentation based on deep learning model, figureFileSmall=7/UwQY4EZU5/3IDwKQKocA==, figureFileBig=GMCbYXmyx7lzz/J5XlXX6g==, tableContent=null), ArticleFig(id=1243220404043624834, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图8, caption=
基于深度学习模型的图像分割, figureFileSmall=7/UwQY4EZU5/3IDwKQKocA==, figureFileBig=GMCbYXmyx7lzz/J5XlXX6g==, tableContent=null), ArticleFig(id=1243220404169453965, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.9, caption=
3D mesh model of segmented phases in UHPC-NC, figureFileSmall=1c5cAjfTO9EtRkIW0sv8kw==, figureFileBig=LrjT49tRcXltLYwsDGTwCg==, tableContent=null), ArticleFig(id=1243220404291088789, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图9, caption=
UHPC-NC主要组分的三维网格模型, figureFileSmall=1c5cAjfTO9EtRkIW0sv8kw==, figureFileBig=LrjT49tRcXltLYwsDGTwCg==, tableContent=null), ArticleFig(id=1243220404404335005, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.10, caption=
Mesoscopic structure at the interface of UHPC-NC, figureFileSmall=0o0/mh8I/BDBUrYTACVm1g==, figureFileBig=36pdwouLOX/DcTEGqS4M3Q==, tableContent=null), ArticleFig(id=1243220404609855910, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图10, caption=
UHPC-NC界面处介观结构特征, figureFileSmall=0o0/mh8I/BDBUrYTACVm1g==, figureFileBig=36pdwouLOX/DcTEGqS4M3Q==, tableContent=null), ArticleFig(id=1243220404693741996, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.11, caption=
Three failure modes of direct tension specimens, figureFileSmall=DjC26T6Yz/0PqS1PeaL04Q==, figureFileBig=bZqavA1ltnvVoTwR7l40mA==, tableContent=null), ArticleFig(id=1243220404853125552, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图11, caption=
直接拉伸试件的三种破坏形态, figureFileSmall=DjC26T6Yz/0PqS1PeaL04Q==, figureFileBig=bZqavA1ltnvVoTwR7l40mA==, tableContent=null), ArticleFig(id=1243220404949594548, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.12, caption=
Final model meshing results, figureFileSmall=x9OIEVnm/1E47b0jpjx62Q==, figureFileBig=GCYUmUWCaTSGBivjLQWivA==, tableContent=null), ArticleFig(id=1243220405046063547, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图12, caption=
最终的模型网格划分结果, figureFileSmall=x9OIEVnm/1E47b0jpjx62Q==, figureFileBig=GCYUmUWCaTSGBivjLQWivA==, tableContent=null), ArticleFig(id=1243220405239001538, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.13, caption=
Meso-scale finite element model of UHPC-NC, figureFileSmall=pssFhHvzn67X6eidk4atGQ==, figureFileBig=o+n51kFWcpqnBfeYkyINNQ==, tableContent=null), ArticleFig(id=1243220405356442054, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图13, caption=
介观尺度的UHPC-NC有限元模型, figureFileSmall=pssFhHvzn67X6eidk4atGQ==, figureFileBig=o+n51kFWcpqnBfeYkyINNQ==, tableContent=null), ArticleFig(id=1243220405515825613, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.14, caption=
Roughness comparison of various interface treatments before and after testing, figureFileSmall=kAbojQZI1BdiAzEffi0OPg==, figureFileBig=VdLnzdX/LqraLKsjfLNE8g==, tableContent=null), ArticleFig(id=1243220405645849044, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图14, caption=
不同界面处理方法的试验前后粗糙度对比, figureFileSmall=kAbojQZI1BdiAzEffi0OPg==, figureFileBig=VdLnzdX/LqraLKsjfLNE8g==, tableContent=null), ArticleFig(id=1243220405759095258, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.15, caption=
Point cloud maps of NC interfaces under different surface treatment methods, figureFileSmall=TyXu4m3wVWjUAcdmnTqduA==, figureFileBig=cOjpHwmVOv1KYYXZxLca/w==, tableContent=null), ArticleFig(id=1243220405989781988, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图15, caption=
不同界面处理方法的NC界面点云云图, figureFileSmall=TyXu4m3wVWjUAcdmnTqduA==, figureFileBig=cOjpHwmVOv1KYYXZxLca/w==, tableContent=null), ArticleFig(id=1243220406157554153, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.16, caption=
Load-displacement curves of UHPC-NC interfaces with different treatment methods, figureFileSmall=N57lBCeLGNvAKAr4C/N5iw==, figureFileBig=xEg4iOgO+8lahNlRxdPUfQ==, tableContent=null), ArticleFig(id=1243220406266606063, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图16, caption=
不同界面处理方法的UHPC-NC界面载荷-位移曲线, figureFileSmall=N57lBCeLGNvAKAr4C/N5iw==, figureFileBig=xEg4iOgO+8lahNlRxdPUfQ==, tableContent=null), ArticleFig(id=1243220406363075062, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.17, caption=
Simulated Mises stress distribution of UHPC-NC under tensile loading, figureFileSmall=Cx45wAYyMitBE4T5V+onBw==, figureFileBig=A/xi3SUvb1BrWamv9EZCDw==, tableContent=null), ArticleFig(id=1243220406446961148, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图17, caption=
直接拉伸试验的UHPC-NC应力状态分布, figureFileSmall=Cx45wAYyMitBE4T5V+onBw==, figureFileBig=A/xi3SUvb1BrWamv9EZCDw==, tableContent=null), ArticleFig(id=1243220406547624447, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.18, caption=
Comparison of simulated failure mode and actually observed crack-Type A failure, figureFileSmall=hXQaL6CP+1U+5nd14ky4aw==, figureFileBig=/jYuBbsJ/IpYef/Mtwc4zw==, tableContent=null), ArticleFig(id=1243220406748951042, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图18, caption=
仿真破坏模式与实际观察裂纹的对比- A类破坏, figureFileSmall=hXQaL6CP+1U+5nd14ky4aw==, figureFileBig=/jYuBbsJ/IpYef/Mtwc4zw==, tableContent=null), ArticleFig(id=1243220406895751688, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Fig.19, caption=
Comparison of simulated failure mode and actually observed crack-Type B failure, figureFileSmall=oTLPdrHChEMqW4/EDNfkOw==, figureFileBig=fdau+qifVc/gYRLLNdPRSQ==, tableContent=null), ArticleFig(id=1243220407017386509, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=图19, caption=
仿真破坏模式与实际观察裂纹的对比-B类破坏, figureFileSmall=oTLPdrHChEMqW4/EDNfkOw==, figureFileBig=fdau+qifVc/gYRLLNdPRSQ==, tableContent=null), ArticleFig(id=1243220407109661199, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Tab.1, caption=
Mix proportions of UHPC and NC
, figureFileSmall=null, figureFileBig=null, tableContent=
| Materials | NC/(kg·m-3) | UHPC/(kg·m-3) |
|---|
| Cement | 420 | 890 |
| Water | 185 | 187.40 |
| River sand | 573 | 935 |
| Silica fume | - | 157 |
| Steel fiber | - | 156 |
| Water reducer | 1.26 | 10.47 |
), ArticleFig(id=1243220407197741587, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=表1, caption=
UHPC和NC的配合比设计
, figureFileSmall=null, figureFileBig=null, tableContent=
| Materials | NC/(kg·m-3) | UHPC/(kg·m-3) |
|---|
| Cement | 420 | 890 |
| Water | 185 | 187.40 |
| River sand | 573 | 935 |
| Silica fume | - | 157 |
| Steel fiber | - | 156 |
| Water reducer | 1.26 | 10.47 |
), ArticleFig(id=1243220407369708055, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Tab.2, caption=
Constitutive parameters of UHPC-NC interfacial cohesive zone model
, figureFileSmall=null, figureFileBig=null, tableContent=
| Constitutive parameters | Smooth | Water jet | Sand blasting | Chiseling |
|---|
| Normal cohesive stiffness-Kn/(N·mm-3) | 5.217 | 4.949 | 4.000 | 5.493 |
| Tangential cohesive stiffness-Ks and Kt/(N·mm-3) | 5.556 | 5.378 | 4.332 | 5.670 |
| Maximum separation stress/MPa | 1.738 | 2.596 | 3.265 | 3.934 |
| Total/plastic displacement/mm | 0.33 | 0.50 | 0.78 | 0.70 |
| Stabilization | 0.001 |
), ArticleFig(id=1243220407524897306, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=表2, caption=
UHPC-NC界面内聚力模型本构参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| Constitutive parameters | Smooth | Water jet | Sand blasting | Chiseling |
|---|
| Normal cohesive stiffness-Kn/(N·mm-3) | 5.217 | 4.949 | 4.000 | 5.493 |
| Tangential cohesive stiffness-Ks and Kt/(N·mm-3) | 5.556 | 5.378 | 4.332 | 5.670 |
| Maximum separation stress/MPa | 1.738 | 2.596 | 3.265 | 3.934 |
| Total/plastic displacement/mm | 0.33 | 0.50 | 0.78 | 0.70 |
| Stabilization | 0.001 |
), ArticleFig(id=1243220407730418207, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=EN, label=Tab.3, caption=
Interfacial tensile and shear strength results under different treatment methods
, figureFileSmall=null, figureFileBig=null, tableContent=
| Treatment method | Mean axial tensile strength/MPa | P-value of direct tensile test results/% | Mean interfacial shear strength/MPa |
|---|
| Smooth | 1.513 | 85.20 | 1.738 |
| Water jet | 1.831 | 87.45 | 2.596 |
| Sand blasting | 2.103 | - | 3.265 |
| Chiseling | 3.241 | 66.20 | 3.934 |
), ArticleFig(id=1243220407822692900, tenantId=1146029695717560320, journalId=1242844143416819734, articleId=1243220382174524194, language=CN, label=表3, caption=
不同界面处理方法的直接拉伸和直接剪切试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| Treatment method | Mean axial tensile strength/MPa | P-value of direct tensile test results/% | Mean interfacial shear strength/MPa |
|---|
| Smooth | 1.513 | 85.20 | 1.738 |
| Water jet | 1.831 | 87.45 | 2.596 |
| Sand blasting | 2.103 | - | 3.265 |
| Chiseling | 3.241 | 66.20 | 3.934 |
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