Article(id=1322636153656816403, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322636152813768892, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20200233, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1585584000000, receivedDateStr=2020-03-31, revisedDate=1587139200000, revisedDateStr=2020-04-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1793270632423, onlineDateStr=2026-10-29, pubDate=1597852800000, pubDateStr=2020-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793270632423, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793270632423, creator=13701087609, updateTime=1793270632423, updator=13701087609, issue=Issue{id=1322636152813768892, tenantId=1146029695717560320, journalId=1263187385517883426, year='2020', volume='48', issue='8', pageStart='1145', pageEnd='1352', issueExtLink='null', onlineDate='null', pubDate='1597852800000', pubDateStr='2020-08-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793270632222, creator='13701087609', updateTime=1793277122165, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322663373687337109, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322636152813768892, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322663373687337110, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322636152813768892, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1212, endPage=1222, ext={EN=ArticleExt(id=1322636153874920212, articleId=1322636153656816403, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Influence of Curing Regime on Resistance of Ultra-High Performance Concrete to Explosive Spalling Under High Temperature, columnId=1322636153396777149, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Issue for Ultra-high Performance ConcreteⅠ, runingTitle=null, highlight=null, articleAbstract=

Explosive spalling behavior and microstructure of ultra-high performance concrete (UHPC) prepared with four different curing regimes (i.e., 20 ℃ water curing, hot water curing, dry air heating and hot water-dry air combined curing) were investigated. The results indicate that the combined curing is efficient to enhance resistance of UHPC to explosive spalling under high temperature. No spalling occurs on the UHPC cured by 90 ℃ hot water curing for 2 d and 250 ℃ dry air heating for 3 d. Such a combined curing is a novel approach to prevent explosive spalling of UHPC at elevated temperature, which is different from adding polypropylene fiber usually employed. It can be attributed to an internal free water minimizing mechanism. During dry air heating within the combined curing, a high-temperature steam environment can be established inside UHPC. Thus, further hydration of residual cement and pozzolanic reaction of mineral admixtures both can be activated to form massive dense hydrates. Meanwhile, most of internal free water has been consumed, so that the vapor pressure inside UHPC under high temperature is decreased, hence prohibiting the spalling occurrence efficiently.

, authors=Xujing NIU1, 2, Ying NIE3, Gaifei PENG2, Yajie SHANG4, Hong DING5, Weifeng QU5, authorsList=Xujing NIU, Ying NIE, Gaifei PENG, Yajie SHANG, Hong DING, Weifeng QU, authorCompany=null, correspAuthors=Gaifei PENG, authorNote=

NIU Xujing (1989-), female, Ph.D. E-mail:

, correspAuthorsNote=
PENG Gaifei (1966-), male, Ph.D., Professor. E-mail:
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采用4种不同养护制度(20 ℃水养、热水养护、干热养护和热水-干热组合养护)制备超高性能混凝土(UHPC),测定其高温爆裂行为,并结合多种微观测试技术,对UHPC的微观结构进行分析。结果表明:组合养护能够明显改善UHPC的抗高温爆裂性能,且当先进行90 ℃热水预养护2 d,再进行250 ℃干热养护3 d时,混凝土的高温爆裂现象完全被抑制。明显不同于通常的掺加聚丙烯纤维抑制爆裂的是,热水-干热组合养护是一种新的抑制爆裂方法。其机理是内部游离水的减量化机理,即:组合养护可使UHPC内部建立一种高温蒸汽环境,有效促进水泥水化、激活掺合料的火山灰活性,导致许多致密的水化产物得以生成,同时消耗大量混凝土内部游离水,使得制备出的UHPC在高温加热过程中所能形成的蒸汽压较低,不足以引发高温爆裂。

, authors=牛旭婧1, 2, 乜颖3, 朋改非2, 尚亚杰4, 丁宏5, 曲维峰5, authorsList=牛旭婧, 乜颖, 朋改非, 尚亚杰, 丁宏, 曲维峰, authorCompany=null, correspAuthors=朋改非, authorNote=

牛旭婧(1989—),女,博士。

, correspAuthorsNote=
朋改非(1966—),男,博士,教授。
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养护制度对超高性能混凝土抗高温爆裂性能的影响
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牛旭婧 1, 2 , 乜颖 3 , 朋改非 2 , 尚亚杰 4 , 丁宏 5 , 曲维峰 5
硅酸盐学报 | 超高性能混凝土专题 2020,48(8): 1212-1222
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硅酸盐学报 |超高性能混凝土专题 2020 , 48 (8) : 1212 -1222
养护制度对超高性能混凝土抗高温爆裂性能的影响
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牛旭婧(1989—),女,博士。

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牛旭婧1, 2 , 乜颖3, 朋改非2 , 尚亚杰4, 丁宏5, 曲维峰5
作者信息
  • 1.清华大学水沙科学与水利水电工程国家重点实验室,北京 100084
  • 2.北京交通大学土木建筑工程学院,北京 100044
  • 3.北京住总集团有限责任公司,北京 100061
  • 4.北京新航城控股有限公司,北京 102602
  • 5.北京建工恒均工程检测有限公司,北京 102612
通讯作者:
朋改非(1966—),男,博士,教授。
作者简介:

牛旭婧(1989—),女,博士。

Influence of Curing Regime on Resistance of Ultra-High Performance Concrete to Explosive Spalling Under High Temperature
Xujing NIU1, 2 , Ying NIE3, Gaifei PENG2 , Yajie SHANG4, Hong DING5, Weifeng QU5
Affiliations
  • 1.State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
  • 2.Faculty of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
  • 3.Beijing Uni-Construction Group Co., Ltd., Beijing 100061, China
  • 4.Beijing New Aerotropolis Holdings Co., Ltd., Beijing 102602, China
  • 5.Beijing Construction Engineering Group (BCEG), Hengjun Engineering Detection Co., Ltd., Beijing 102612, China
  • Corresponding Author:
    PENG Gaifei (1966-), male, Ph.D., Professor. E-mail:

    NIU Xujing (1989-), female, Ph.D. E-mail:

出版时间: 2020-08-20 doi: 10.14062/j.issn.0454-5648.20200233
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采用4种不同养护制度(20 ℃水养、热水养护、干热养护和热水-干热组合养护)制备超高性能混凝土(UHPC),测定其高温爆裂行为,并结合多种微观测试技术,对UHPC的微观结构进行分析。结果表明:组合养护能够明显改善UHPC的抗高温爆裂性能,且当先进行90 ℃热水预养护2 d,再进行250 ℃干热养护3 d时,混凝土的高温爆裂现象完全被抑制。明显不同于通常的掺加聚丙烯纤维抑制爆裂的是,热水-干热组合养护是一种新的抑制爆裂方法。其机理是内部游离水的减量化机理,即:组合养护可使UHPC内部建立一种高温蒸汽环境,有效促进水泥水化、激活掺合料的火山灰活性,导致许多致密的水化产物得以生成,同时消耗大量混凝土内部游离水,使得制备出的UHPC在高温加热过程中所能形成的蒸汽压较低,不足以引发高温爆裂。

超高性能混凝土  /  组合养护  /  高温爆裂  /  微观结构  /  游离水

Explosive spalling behavior and microstructure of ultra-high performance concrete (UHPC) prepared with four different curing regimes (i.e., 20 ℃ water curing, hot water curing, dry air heating and hot water-dry air combined curing) were investigated. The results indicate that the combined curing is efficient to enhance resistance of UHPC to explosive spalling under high temperature. No spalling occurs on the UHPC cured by 90 ℃ hot water curing for 2 d and 250 ℃ dry air heating for 3 d. Such a combined curing is a novel approach to prevent explosive spalling of UHPC at elevated temperature, which is different from adding polypropylene fiber usually employed. It can be attributed to an internal free water minimizing mechanism. During dry air heating within the combined curing, a high-temperature steam environment can be established inside UHPC. Thus, further hydration of residual cement and pozzolanic reaction of mineral admixtures both can be activated to form massive dense hydrates. Meanwhile, most of internal free water has been consumed, so that the vapor pressure inside UHPC under high temperature is decreased, hence prohibiting the spalling occurrence efficiently.

ultra-high performance concrete  /  combined curing  /  explosive spalling under high temperature  /  microstructure  /  free water
牛旭婧, 乜颖, 朋改非, 尚亚杰, 丁宏, 曲维峰. 养护制度对超高性能混凝土抗高温爆裂性能的影响. 硅酸盐学报, 2020 , 48 (8) : 1212 -1222 . DOI: 10.14062/j.issn.0454-5648.20200233
Xujing NIU, Ying NIE, Gaifei PENG, Yajie SHANG, Hong DING, Weifeng QU. Influence of Curing Regime on Resistance of Ultra-High Performance Concrete to Explosive Spalling Under High Temperature[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (8) : 1212 -1222 . DOI: 10.14062/j.issn.0454-5648.20200233
  • 国家自然科学基金(51878032; 51278048)
  • 北京市自然科学基金(8172036)
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2020年第48卷第8期
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doi: 10.14062/j.issn.0454-5648.20200233
  • 接收时间:2020-03-31
  • 首发时间:2026-10-29
  • 出版时间:2020-08-20
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  • 收稿日期:2020-03-31
  • 修回日期:2020-04-18
基金
国家自然科学基金(51878032; 51278048)
北京市自然科学基金(8172036)
作者信息
    1.清华大学水沙科学与水利水电工程国家重点实验室,北京 100084
    2.北京交通大学土木建筑工程学院,北京 100044
    3.北京住总集团有限责任公司,北京 100061
    4.北京新航城控股有限公司,北京 102602
    5.北京建工恒均工程检测有限公司,北京 102612

通讯作者:

朋改非(1966—),男,博士,教授。
参考文献
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https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20200233
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2种不同金属材料的力学参数
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Percentage of
total species (%)
属
Genus
种数
Number of
species
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Percentage of total
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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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