Article(id=1203753462187143730, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1203753457208504777, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2309514, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1701532800000, receivedDateStr=2023-12-03, revisedDate=1729526400000, revisedDateStr=2024-10-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1764926790043, onlineDateStr=2025-12-05, pubDate=1737129600000, pubDateStr=2025-01-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764926790043, onlineIssueDateStr=2025-12-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764926790043, creator=13701087609, updateTime=1764926790043, updator=13701087609, issue=Issue{id=1203753457208504777, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='2', pageStart='439', pageEnd='878', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764926788856, creator=13701087609, updateTime=1764928745558, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1203761664261858014, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1203753457208504777, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1203761664261858015, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1203753457208504777, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=753, endPage=762, ext={EN=ArticleExt(id=1203753463424463492, articleId=1203753462187143730, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Mechanical Properties of SiO
2-PVA Fiber Composite Reinforced Recycled Concrete, columnId=1156262729917780302, journalTitle=Science Technology and Engineering, columnName=Papers·Architectural Science, runingTitle=null, highlight=null, articleAbstract=
With the development of the concept of composite materials, in order to further explore the mechanical properties of composite modified recycled concrete under the coupling effect of NS (nano-SiO2) modified recycled coarse aggregate and PVA(polyvinyl alcohol) fibers, slump, cubic compression, axial compression, splitting tensile and flexural tests were carried out to study the working performance and mechanical performance changes of modified recycled coarse aggregate concrete with increasing PVA fiber content under different substitution rates. The results show that the slump of concrete increases with the increase of fiber volume. The damage of concrete is brittle, and the damage pattern of recycled concrete mixed with fiber is better. When the fiber volume content is 0.05 vol% and 0.10 vol%, the cubic compressive strength, ultimate bearing capacity, splitting tensile strength, folding strength and static elastic modulus will decrease under different regeneration and replacement rates, but all the strengths will exceed and increase when the fiber volume content is 0.15 vol%. PVA fiber will reduce the ultimate compressive bearing capacity and have different positive and negative effects on the peak strain. It is recommended to add PVA fiber with a volume content of 0.1 vol%. If PVA fiber is needed, it is recommended to use it when the regeneration and replacement rate is less than 30 wt%. In addition, it is found that the modified reclaimed coarse aggregate has good performance and can effectively replace natural aggregate or be mixed with natural aggregate in practical engineering.
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2-PVA纤维复合改性再生混凝土力学性能, columnId=1156262730517565784, journalTitle=科学技术与工程, columnName=论文·建筑科学, runingTitle=null, highlight=null, articleAbstract=
随着复合材料理念的发展,为进一步探究纳米SiO2(Nano-SiO2 ,NS)改性再生粗骨料与聚乙烯醇纤维(polyvinyl alcohol,PVA)耦合作用下复合改性再生混凝土力学性能,开展了坍落度、立方体抗压、轴心抗压、劈裂抗拉和抗折试验,研究了不同取代率下改性再生粗骨料混凝土随聚PVA纤维掺量增加的工作性能和力学性能变化规律。结果表明:随着纤维体积掺量增加,混凝土坍落度增大;混凝土破坏呈脆性,掺纤维的再生混凝土的破坏形态整体性更好;纤维体积掺量为0.05 vol%和0.10 vol%时,不同再生取代率下的立方体抗压强度、极限承载力、劈裂抗拉强度、抗折强度和静弹性模量都会有所减小,但在纤维体积掺量为0.15 vol%时,所有强度会反而超过且提高;PVA纤维会减小抗压极限承载力,对峰值应变出现不同正负效果,建议添加PVA纤维体积掺量为0.1vol%,如需添加PVA纤维,建议在再生取代率低于30 wt%使用。另外发现,改性再生粗骨料性能良好,可有效替代天然骨料或与天然骨料混合在实际工程中使用。
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1, 2, address=
1 School of Civil and Architectural Engineering, Guangxi University, Nanning 530000, China
2 School of Civil and Architectural Engineering, Nanning University, Nanning 530000, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1203787152531366064, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, authorId=1203787152313262228, language=CN, stringName=肖湘, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1 广西大学土木建筑工程学院, 南宁 530000
2 南宁学院土木与建筑工程学院, 南宁 530000, bio={"content":"
肖湘(1964—),男,瑶族,广西柳州人,硕士,教授,教授级高级工程师。研究方向:混凝土结构。E-mail:1297257100@qq.com。
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肖湘(1964—),男,瑶族,广西柳州人,硕士,教授,教授级高级工程师。研究方向:混凝土结构。E-mail:1297257100@qq.com。
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2 南宁学院土木与建筑工程学院, 南宁 530000)])])], keywords=[Keyword(id=1203787154716598584, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, orderNo=1, keyword=recycled concrete), Keyword(id=1203787154800484671, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, orderNo=2, keyword=nano-SiO
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2), Keyword(id=1203787155719037375, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, orderNo=3, keyword=PVA纤维), Keyword(id=1203787155899392469, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, orderNo=4, keyword=工作性能), Keyword(id=1203787156000055779, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, orderNo=5, keyword=力学性能), Keyword(id=1203787156180410869, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, orderNo=6, keyword=复合改性)], refs=[Reference(id=1203787164862619650, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, doi=null, pmid=null, pmcid=null, year=2009, volume=31, issue=8, pageStart=564, pageEnd=569, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=Achtemichuk S, Hubbard J, Sluce R, journalName=Cement & Concrete Composites, refType=null, unstructuredReference=
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37(1): 245-250., articleTitle=Study on the mechanical properties and durability of graphene oxide composite PVA fiber reinforced cementitious materials, refAbstract=null)], funds=[Fund(id=1203787164468356068, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, awardId=52078370, language=CN, fundingSource=国家自然科学基金(52078370), fundOrder=null, country=null), Fund(id=1203787164589990894, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, awardId=2023GXNSFBA026135, language=CN, fundingSource=广西自然科学基金青年科学基金(2023GXNSFBA026135), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1203787151981912172, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, xref=1, ext=[AuthorCompanyExt(id=1203787151994495085, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, companyId=1203787151981912172, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 广西大学土木建筑工程学院, 南宁 530000)]), AuthorCompany(id=1203787152141295743, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, xref=2, ext=[AuthorCompanyExt(id=1203787152149684353, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, companyId=1203787152141295743, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Nano-SiO2 colloidal solution, figureFileSmall=cyBaEUmMeWxJyZY77SZZ0g==, figureFileBig=W6csK/EbXPcVoVfjMwD89w==, tableContent=null), ArticleFig(id=1203787156604035613, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图1, caption=
纳米SiO2胶体溶液, figureFileSmall=cyBaEUmMeWxJyZY77SZZ0g==, figureFileBig=W6csK/EbXPcVoVfjMwD89w==, tableContent=null), ArticleFig(id=1203787156784390701, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.2, caption=
Polyvinylalcohol fiber, figureFileSmall=AMJINBlCKNzQRJLjd0X/AA==, figureFileBig=ALmjqoDBIM2u7dgZu4p15Q==, tableContent=null), ArticleFig(id=1203787156906025527, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图2, caption=
聚乙烯醇纤维, figureFileSmall=AMJINBlCKNzQRJLjd0X/AA==, figureFileBig=ALmjqoDBIM2u7dgZu4p15Q==, tableContent=null), ArticleFig(id=1203787157023466049, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.3, caption=
Coarse aggregate, figureFileSmall=aWxciE2V44ZNDLOniSFGqQ==, figureFileBig=AyaViq6EO/EsZE4ufGuekg==, tableContent=null), ArticleFig(id=1203787157828772430, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图3, caption=
粗骨料, figureFileSmall=aWxciE2V44ZNDLOniSFGqQ==, figureFileBig=AyaViq6EO/EsZE4ufGuekg==, tableContent=null), ArticleFig(id=1203787157946212957, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.4, caption=
Preparation process of composite modified concrete, figureFileSmall=NhJwawMvqeyvKz7u6t0qog==, figureFileBig=ejReM5rWZR0WzJ5WUcvg4g==, tableContent=null), ArticleFig(id=1203787158051070571, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图4, caption=
复合改性混凝土制备过程, figureFileSmall=NhJwawMvqeyvKz7u6t0qog==, figureFileBig=ejReM5rWZR0WzJ5WUcvg4g==, tableContent=null), ArticleFig(id=1203787158168511094, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.5, caption=
RMT-301 Rock and concrete mechanics testing machine, figureFileSmall=dwzlYtLgt5Qgd7WP4dnung==, figureFileBig=3K+FGajKPKFOUFCO+D7jkg==, tableContent=null), ArticleFig(id=1203787158277563009, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图5, caption=
RMT-301岩石与混凝土力学试验机, figureFileSmall=dwzlYtLgt5Qgd7WP4dnung==, figureFileBig=3K+FGajKPKFOUFCO+D7jkg==, tableContent=null), ArticleFig(id=1203787158415975053, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.6, caption=
Slump test, figureFileSmall=n3FiXPUfDCJnMJC3cjAFNg==, figureFileBig=ZUU7mLuMhuNB+muUcoGaeA==, tableContent=null), ArticleFig(id=1203787158583747222, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图6, caption=
坍落度测试, figureFileSmall=n3FiXPUfDCJnMJC3cjAFNg==, figureFileBig=ZUU7mLuMhuNB+muUcoGaeA==, tableContent=null), ArticleFig(id=1203787158680216224, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.7, caption=
Comparison of slump test results, figureFileSmall=+wOCVURxZmhZ1/xn7y64pQ==, figureFileBig=cxpl1cLI/fQyEDjuEsCPcQ==, tableContent=null), ArticleFig(id=1203787158806045355, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图7, caption=
坍落度试验结果对比, figureFileSmall=+wOCVURxZmhZ1/xn7y64pQ==, figureFileBig=cxpl1cLI/fQyEDjuEsCPcQ==, tableContent=null), ArticleFig(id=1203787158885737139, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.8, caption=
Failure diagram of composite modified concrete cube compression test, figureFileSmall=+JDsoyQML8eIdqRyL1ft8g==, figureFileBig=syNzQyG3g0PSpfPAm8NTBg==, tableContent=null), ArticleFig(id=1203787158994789054, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图8, caption=
复合改性混凝土立方体抗压试验破坏图, figureFileSmall=+JDsoyQML8eIdqRyL1ft8g==, figureFileBig=syNzQyG3g0PSpfPAm8NTBg==, tableContent=null), ArticleFig(id=1203787159141589706, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.9, caption=
Cube compressive strength, figureFileSmall=oYajvjzYTV1L/KPkmi/Xrw==, figureFileBig=r37QmZnZdvvD/lwz1DUO/w==, tableContent=null), ArticleFig(id=1203787159284196053, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图9, caption=
立方体抗压强度, figureFileSmall=oYajvjzYTV1L/KPkmi/Xrw==, figureFileBig=r37QmZnZdvvD/lwz1DUO/w==, tableContent=null), ArticleFig(id=1203787159430996705, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.10, caption=
Failure diagram of composite modified concrete under axial compression test, figureFileSmall=q8aLeZW905Q1QTsyL5/mXQ==, figureFileBig=7JEVJYS3A+9NlThnHPoL8g==, tableContent=null), ArticleFig(id=1203787159556825835, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图10, caption=
复合改性混凝土轴心抗压试验破坏图, figureFileSmall=q8aLeZW905Q1QTsyL5/mXQ==, figureFileBig=7JEVJYS3A+9NlThnHPoL8g==, tableContent=null), ArticleFig(id=1203787159674266357, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.11, caption=
Stress-strain curve of composite modified concrete, figureFileSmall=mA2IjOzp5mKDDWKjZvGvrQ==, figureFileBig=g02tfeSyRsYLlcoqolNS1w==, tableContent=null), ArticleFig(id=1203787159808484097, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图11, caption=
复合改性混凝土应力-应变曲线, figureFileSmall=mA2IjOzp5mKDDWKjZvGvrQ==, figureFileBig=g02tfeSyRsYLlcoqolNS1w==, tableContent=null), ArticleFig(id=1203787159938507524, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.12, caption=
Peak stress, figureFileSmall=BB3ndU7uTR3luF59zXT+Kw==, figureFileBig=2coA1ZT4qf0Ppeswali1cw==, tableContent=null), ArticleFig(id=1203787160097891086, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图12, caption=
峰值应力, figureFileSmall=BB3ndU7uTR3luF59zXT+Kw==, figureFileBig=2coA1ZT4qf0Ppeswali1cw==, tableContent=null), ArticleFig(id=1203787160223720209, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.13, caption=
Peak strain, figureFileSmall=FHrtMQXcTd2uH+bOZVeQeA==, figureFileBig=E/EY4AXLGSPDQaJcTwTHNQ==, tableContent=null), ArticleFig(id=1203787160416658204, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图13, caption=
峰值应变, figureFileSmall=FHrtMQXcTd2uH+bOZVeQeA==, figureFileBig=E/EY4AXLGSPDQaJcTwTHNQ==, tableContent=null), ArticleFig(id=1203787160613790502, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.14, caption=
Static elastic modulus test results, figureFileSmall=G4NRSEaF0rC4hMGf4Z84cQ==, figureFileBig=IBJjH7dShk82Gs47Z3JpyA==, tableContent=null), ArticleFig(id=1203787160768979764, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图14, caption=
静弹性模量试验结果, figureFileSmall=G4NRSEaF0rC4hMGf4Z84cQ==, figureFileBig=IBJjH7dShk82Gs47Z3JpyA==, tableContent=null), ArticleFig(id=1203787160886420287, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.15, caption=
Failure diagram of composite modified concrete splitting tensile test, figureFileSmall=BN0YdB4BSvLpoBwusOh5vg==, figureFileBig=4oGNelffyz+ffyUHLhv43Q==, tableContent=null), ArticleFig(id=1203787161033220940, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图15, caption=
复合改性混凝土劈裂抗拉试验破坏图, figureFileSmall=BN0YdB4BSvLpoBwusOh5vg==, figureFileBig=4oGNelffyz+ffyUHLhv43Q==, tableContent=null), ArticleFig(id=1203787161159050073, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.16, caption=
Splitting tensile strength, figureFileSmall=pI9p1TwijOkmMMWZ7dluJA==, figureFileBig=TZDOgm7xmZEasEc37QfeCQ==, tableContent=null), ArticleFig(id=1203787161255519072, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图16, caption=
劈裂抗拉强度, figureFileSmall=pI9p1TwijOkmMMWZ7dluJA==, figureFileBig=TZDOgm7xmZEasEc37QfeCQ==, tableContent=null), ArticleFig(id=1203787161339405158, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.17, caption=
Failure diagram of composite modified concrete flexural strength test, figureFileSmall=BlCNOr5zpzZZiyvuuz9Pbw==, figureFileBig=nau+Fy0Bg4d7aOtNQwS7+A==, tableContent=null), ArticleFig(id=1203787161456845680, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图17, caption=
复合改性混凝土抗折试验破坏图, figureFileSmall=BlCNOr5zpzZZiyvuuz9Pbw==, figureFileBig=nau+Fy0Bg4d7aOtNQwS7+A==, tableContent=null), ArticleFig(id=1203787161595257720, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Fig.18, caption=
Flexural strength, figureFileSmall=SDPnHIa7SQephWJdrUAjmA==, figureFileBig=3n9dTLB8+XZN+68llTanmA==, tableContent=null), ArticleFig(id=1203787161712698240, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=图18, caption=
抗折强度, figureFileSmall=SDPnHIa7SQephWJdrUAjmA==, figureFileBig=3n9dTLB8+XZN+68llTanmA==, tableContent=null), ArticleFig(id=1203787161830138757, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Table 1, caption=
Physical properties of nano-SiO2 colloidal solution
, figureFileSmall=null, figureFileBig=null, tableContent=
| 外观 | 粒径/mm | 二氧化硅含量/% | pH |
| 透明液体 | 10 | 30 | 9~11 |
), ArticleFig(id=1203787161930802061, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=表1, caption=
纳米SiO2胶体溶液物理性能
, figureFileSmall=null, figureFileBig=null, tableContent=
| 外观 | 粒径/mm | 二氧化硅含量/% | pH |
| 透明液体 | 10 | 30 | 9~11 |
), ArticleFig(id=1203787162023076757, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Table 2, caption=
Physical properties of PVA fibers
, figureFileSmall=null, figureFileBig=null, tableContent=
长度/ mm | 直径/ μm | 密度/ (g·cm-3) | 抗拉强 度/MPa | 弹性模 量/GPa |
| 9 | 16 | 1.29 | 1 810 | 11.5 |
), ArticleFig(id=1203787162165683101, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=表2, caption=
PVA纤维物理性能
, figureFileSmall=null, figureFileBig=null, tableContent=
长度/ mm | 直径/ μm | 密度/ (g·cm-3) | 抗拉强 度/MPa | 弹性模 量/GPa |
| 9 | 16 | 1.29 | 1 810 | 11.5 |
), ArticleFig(id=1203787162333455272, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Table 3, caption=
Performance indexes of aggregate
, figureFileSmall=null, figureFileBig=null, tableContent=
| 种类 | 级配/mm | 表观密度/(kg·m-3) | 松散堆积密度/(kg·m-3) | 空隙率/% | 吸水率/% | 压碎值/% |
| 机制砂 | 0.00 ~4.75 | 2 714 | 1 584 | 41.64 | — | — |
| NCA | 4.75 ~31.5 | 2 750 | 1 787 | 35 | 0.42 | 8.5 |
| RCA | 4.75 ~31.5 | 2 646 | 1 611 | 39.1 | 4.85 | 19.8 |
| NS-RCA | 4.75 ~31.5 | 2 611 | 1 646 | 36.9 | 2.37 | 16.31 |
), ArticleFig(id=1203787162480255919, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=表3, caption=
粗细骨料的性能指标
, figureFileSmall=null, figureFileBig=null, tableContent=
| 种类 | 级配/mm | 表观密度/(kg·m-3) | 松散堆积密度/(kg·m-3) | 空隙率/% | 吸水率/% | 压碎值/% |
| 机制砂 | 0.00 ~4.75 | 2 714 | 1 584 | 41.64 | — | — |
| NCA | 4.75 ~31.5 | 2 750 | 1 787 | 35 | 0.42 | 8.5 |
| RCA | 4.75 ~31.5 | 2 646 | 1 611 | 39.1 | 4.85 | 19.8 |
| NS-RCA | 4.75 ~31.5 | 2 611 | 1 646 | 36.9 | 2.37 | 16.31 |
), ArticleFig(id=1203787162643833785, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Table 4, caption=
Mix proportion of concrete
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试件编号 | 水泥/(kg·m-3) | 砂/(kg·m-3) | 水/(kg·m-3) | 粗骨料/(kg·m-3) | PVA纤维/(kg·m-3) |
| NCA | NS-RCA |
| R0-0 | 400 | 590 | 200 | 1 050 | 0 | 0 |
| R0-005 | 400 | 590 | 200 | 1 050 | 0 | 0.645 |
| R0-01 | 400 | 590 | 200 | 1 050 | 0 | 1.290 |
| R0-015 | 400 | 590 | 200 | 1 050 | 0 | 1.935 |
| R30-0 | 400 | 590 | 200 | 315 | 735 | 0 |
| R30-005 | 400 | 590 | 200 | 315 | 735 | 0.645 |
| R30-01 | 400 | 590 | 200 | 315 | 735 | 1.290 |
| R30-015 | 400 | 590 | 200 | 315 | 735 | 1.935 |
| R70-0 | 400 | 590 | 200 | 735 | 315 | 0 |
| R70-005 | 400 | 590 | 200 | 735 | 315 | 0.645 |
| R70-01 | 400 | 590 | 200 | 735 | 315 | 1.290 |
| R70-015 | 400 | 590 | 200 | 735 | 315 | 1.935 |
| R100-0 | 400 | 590 | 200 | 0 | 1 050 | 0 |
| R100-005 | 400 | 590 | 200 | 0 | 1 050 | 0.645 |
| R100-01 | 400 | 590 | 200 | 0 | 1 050 | 1.290 |
| R100-015 | 400 | 590 | 200 | 0 | 1 050 | 1.935 |
), ArticleFig(id=1203787162790634431, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=表4, caption=
复合强化再生混凝土配合比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试件编号 | 水泥/(kg·m-3) | 砂/(kg·m-3) | 水/(kg·m-3) | 粗骨料/(kg·m-3) | PVA纤维/(kg·m-3) |
| NCA | NS-RCA |
| R0-0 | 400 | 590 | 200 | 1 050 | 0 | 0 |
| R0-005 | 400 | 590 | 200 | 1 050 | 0 | 0.645 |
| R0-01 | 400 | 590 | 200 | 1 050 | 0 | 1.290 |
| R0-015 | 400 | 590 | 200 | 1 050 | 0 | 1.935 |
| R30-0 | 400 | 590 | 200 | 315 | 735 | 0 |
| R30-005 | 400 | 590 | 200 | 315 | 735 | 0.645 |
| R30-01 | 400 | 590 | 200 | 315 | 735 | 1.290 |
| R30-015 | 400 | 590 | 200 | 315 | 735 | 1.935 |
| R70-0 | 400 | 590 | 200 | 735 | 315 | 0 |
| R70-005 | 400 | 590 | 200 | 735 | 315 | 0.645 |
| R70-01 | 400 | 590 | 200 | 735 | 315 | 1.290 |
| R70-015 | 400 | 590 | 200 | 735 | 315 | 1.935 |
| R100-0 | 400 | 590 | 200 | 0 | 1 050 | 0 |
| R100-005 | 400 | 590 | 200 | 0 | 1 050 | 0.645 |
| R100-01 | 400 | 590 | 200 | 0 | 1 050 | 1.290 |
| R100-015 | 400 | 590 | 200 | 0 | 1 050 | 1.935 |
), ArticleFig(id=1203787163986011078, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=EN, label=Table 5, caption=
Specimen design scheme
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验项目 | 试件尺寸/(mm×mm×mm) | 试件数量 |
| 立方体抗压强度 | 150×150×150 | 96 |
| 劈裂抗拉强度 | | |
| 抗拉强度 | 100×100×400 | 48 |
| 轴心抗压强度 | 150×150×300 | 96 |
| 静弹性模量 | | |
), ArticleFig(id=1203787164116034511, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1203753462187143730, language=CN, label=表5, caption=
试件设计方案
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验项目 | 试件尺寸/(mm×mm×mm) | 试件数量 |
| 立方体抗压强度 | 150×150×150 | 96 |
| 劈裂抗拉强度 | | |
| 抗拉强度 | 100×100×400 | 48 |
| 轴心抗压强度 | 150×150×300 | 96 |
| 静弹性模量 | | |
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