Article(id=1322943074858566512, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942446610559222, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20200303, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1588003200000, receivedDateStr=2020-04-28, revisedDate=1598716800000, revisedDateStr=2020-08-30, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343808140, onlineDateStr=2026-10-30, pubDate=1613750400000, pubDateStr=2021-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343808140, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343808140, creator=13701087609, updateTime=1793343808140, updator=13701087609, issue=Issue{id=1322942446610559222, tenantId=1146029695717560320, journalId=1263187385517883426, year='2021', volume='49', issue='2', pageStart='211', pageEnd='440', issueExtLink='null', onlineDate='null', pubDate='1613750400000', pubDateStr='2021-02-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343658354, creator='13701087609', updateTime=1793345474672, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322950064863314723, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942446610559222, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322950064863314724, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942446610559222, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=372, endPage=380, ext={EN=ArticleExt(id=1322943077857493874, articleId=1322943074858566512, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Influence of Silane Emulsion Hydrophobic Agent on Concrete Properties, columnId=1319726165087077079, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Article, runingTitle=null, highlight=null, articleAbstract=

Influence of silane emulsion hydrophobic agent as an additive on the strength and capillary water absorption behavior of concrete was investigated through strength test, hydration heat test, thermogravimetric analysis, capillary water absorption and mercury intrusion test. The results show that silane emulsion reduces the early-age compressive strength and splitting strength of concrete, which is mainly attributed to the retardation effect of silane emulsion on the early cement hydration. The capillary pore volume in 28-d harden cement paste is increased by adding silane emulsion because of the depressed cement hydration. However, the initial water absorption rate, the secondary water absorption rate and the total amount of water absorption of the 28-d concrete during capillary water absorption process are greatly reduced by silane agent. This is since silane emulsion reacts with cement hydration products to form an alkyl hydrophobic layer on the pore wall of the capillary pores, which changes the surface property of the wall from hydrophilic to hydrophobic, thus significantly reducing the rate and the amount of water absorption of concrete. Silane agent has a more profound influence on the concrete properties with a higher water-cement ratio due to the lager capillary pore volume.

, authors=Jianwei YU, Chaoyang ZHANG, Xiangming KONG, Xiaofan PANG, Lingfei JIANG, authorsList=Jianwei YU, Chaoyang ZHANG, Xiangming KONG, Xiaofan PANG, Lingfei JIANG, authorCompany=null, correspAuthors=Xiangming KONG, authorNote=

YU Jianwei (1997-), male, Master candidate. E-mail:

, correspAuthorsNote=
KONG Xiangming (1974-), male, Ph.D., Associate Professor. E-mail:
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通过强度测试、水化热实验、热重分析、毛细吸水实验以及压汞实验研究了内掺硅烷乳液憎水剂对混凝土强度以及毛细吸水性能的影响规律及其机理。结果表明:高掺量硅烷乳液一定程度上抑制水泥水化,从而导致混凝土早龄期抗压强度和劈裂抗拉强度下降以及28 d养护后水泥净浆试块中毛细孔的体积增大。毛细吸水实验表明:28 d龄期混凝土毛细吸水过程的初始吸水速率、二次吸水速率以及总吸水量因硅烷乳液的引入而显著降低;硅烷乳液通过与水泥水化产物反应在毛细孔孔壁形成一层烷基疏水层,使混凝土毛细孔壁性质由亲水性转变为憎水性,进而显著降低混凝土的吸水速率和总吸水率;高水灰比混凝土的毛细孔体积较大,因此硅烷乳液对其影响更为明显。

, authors=喻建伟, 张朝阳, 孔祥明, 庞晓凡, 蒋凌飞, authorsList=喻建伟, 张朝阳, 孔祥明, 庞晓凡, 蒋凌飞, authorCompany=null, correspAuthors=孔祥明, authorNote=

喻建伟(1997—),男,硕士研究生。

, correspAuthorsNote=
孔祥明(1974—),男,副教授。
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内掺硅烷乳液憎水剂对混凝土性能的影响
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喻建伟 , 张朝阳 , 孔祥明 , 庞晓凡 , 蒋凌飞
硅酸盐学报 | 研究论文 2021,49(2): 372-380
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硅酸盐学报 |研究论文 2021 , 49 (2) : 372 -380
内掺硅烷乳液憎水剂对混凝土性能的影响
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喻建伟 , 张朝阳, 孔祥明 , 庞晓凡, 蒋凌飞
作者信息
  • 清华大学土木工程系建筑材料所,北京 100084
通讯作者:
孔祥明(1974—),男,副教授。
作者简介:

喻建伟(1997—),男,硕士研究生。

Influence of Silane Emulsion Hydrophobic Agent on Concrete Properties
Jianwei YU , Chaoyang ZHANG, Xiangming KONG , Xiaofan PANG, Lingfei JIANG
Affiliations
  • Institute of Building Materials, Department of Civil Engineering, Tsinghua University, Beijing 100084, China
  • Corresponding Author:
    KONG Xiangming (1974-), male, Ph.D., Associate Professor. E-mail:

    YU Jianwei (1997-), male, Master candidate. E-mail:

出版时间: 2021-02-20 doi: 10.14062/j.issn.0454-5648.20200303
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通过强度测试、水化热实验、热重分析、毛细吸水实验以及压汞实验研究了内掺硅烷乳液憎水剂对混凝土强度以及毛细吸水性能的影响规律及其机理。结果表明:高掺量硅烷乳液一定程度上抑制水泥水化,从而导致混凝土早龄期抗压强度和劈裂抗拉强度下降以及28 d养护后水泥净浆试块中毛细孔的体积增大。毛细吸水实验表明:28 d龄期混凝土毛细吸水过程的初始吸水速率、二次吸水速率以及总吸水量因硅烷乳液的引入而显著降低;硅烷乳液通过与水泥水化产物反应在毛细孔孔壁形成一层烷基疏水层,使混凝土毛细孔壁性质由亲水性转变为憎水性,进而显著降低混凝土的吸水速率和总吸水率;高水灰比混凝土的毛细孔体积较大,因此硅烷乳液对其影响更为明显。

硅烷乳液  /  憎水剂  /  混凝土  /  强度  /  毛细吸水

Influence of silane emulsion hydrophobic agent as an additive on the strength and capillary water absorption behavior of concrete was investigated through strength test, hydration heat test, thermogravimetric analysis, capillary water absorption and mercury intrusion test. The results show that silane emulsion reduces the early-age compressive strength and splitting strength of concrete, which is mainly attributed to the retardation effect of silane emulsion on the early cement hydration. The capillary pore volume in 28-d harden cement paste is increased by adding silane emulsion because of the depressed cement hydration. However, the initial water absorption rate, the secondary water absorption rate and the total amount of water absorption of the 28-d concrete during capillary water absorption process are greatly reduced by silane agent. This is since silane emulsion reacts with cement hydration products to form an alkyl hydrophobic layer on the pore wall of the capillary pores, which changes the surface property of the wall from hydrophilic to hydrophobic, thus significantly reducing the rate and the amount of water absorption of concrete. Silane agent has a more profound influence on the concrete properties with a higher water-cement ratio due to the lager capillary pore volume.

silane emulsion  /  hydrophobic agent  /  concrete  /  strength  /  capillary water absorption
喻建伟, 张朝阳, 孔祥明, 庞晓凡, 蒋凌飞. 内掺硅烷乳液憎水剂对混凝土性能的影响. 硅酸盐学报, 2021 , 49 (2) : 372 -380 . DOI: 10.14062/j.issn.0454-5648.20200303
Jianwei YU, Chaoyang ZHANG, Xiangming KONG, Xiaofan PANG, Lingfei JIANG. Influence of Silane Emulsion Hydrophobic Agent on Concrete Properties[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (2) : 372 -380 . DOI: 10.14062/j.issn.0454-5648.20200303
  • 国家自然基金资助项目(51978380)
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2021年第49卷第2期
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doi: 10.14062/j.issn.0454-5648.20200303
  • 接收时间:2020-04-28
  • 首发时间:2026-10-30
  • 出版时间:2021-02-20
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  • 收稿日期:2020-04-28
  • 修回日期:2020-08-30
基金
国家自然基金资助项目(51978380)
作者信息
    清华大学土木工程系建筑材料所,北京 100084

通讯作者:

孔祥明(1974—),男,副教授。
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2种不同金属材料的力学参数
科
Family
属数
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genus
种数
Number of
species
占总种数比例
Percentage of
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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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