Article(id=1319222685213770386, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222668956643677, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20220823, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1664467200000, receivedDateStr=2022-09-30, revisedDate=1665331200000, revisedDateStr=2022-10-10, acceptedDate=null, acceptedDateStr=null, onlineDate=1792456798127, onlineDateStr=2026-10-20, pubDate=1684512000000, pubDateStr=2023-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792456798127, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792456798127, creator=13701087609, updateTime=1792456798127, updator=13701087609, issue=Issue{id=1319222668956643677, tenantId=1146029695717560320, journalId=1263187385517883426, year='2023', volume='51', issue='5', pageStart='1091', pageEnd='1372', issueExtLink='null', onlineDate='null', pubDate='1684512000000', pubDateStr='2023-05-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1792456794251, creator='13701087609', updateTime=1792456976356, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319223432827490920, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222668956643677, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319223432827490921, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222668956643677, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1146, endPage=1153, ext={EN=ArticleExt(id=1319222685461234323, articleId=1319222685213770386, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Modification of Cellulose Nanocrystals on Microstructure of Calcium Silicate Hydrate, columnId=1321891041012200067, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Progress on Cement-Based Materials—Research Articles, runingTitle=null, highlight=null, articleAbstract=

Calcium silicate hydrate (C-S-H) gel is a gene of cement-based cementitious materials, and its structural changes are crucial to the development of concrete macroscopic properties. To clarify the modification mechanism of cellulose nanocrystals (CNCs) in cement, C-S-H gels were prepared by a co-precipitation method, and the morphological and nucleation effects of CNCs on the microstructure of C-S-H gels were investigated by X-ray diffraction (XRD), transmission electron microscopy, nanoindentation, and nuclear magnetic resonance. The results show that the hydroxyl groups (—OH) on the surface of CNCs can complex Ca2+ ions, and then react with SiO42- ions in solution to form C-S-H gels that wraps around the CNCs. The CNCs can provide additional nucleation sites for the precipitation and growth of C-S-H gels, promote the reduction of the polymerization degree and the shortening of the chain length of the C-S-H gel, and increase the content of high-density C-S-H gel.

, authors=Dapeng ZHENG, Yuan FANG, Hongzhi CUI, authorsList=Dapeng ZHENG, Yuan FANG, Hongzhi CUI, authorCompany=null, correspAuthors=Hongzhi CUI, authorNote=

ZHENG Dapeng (1991-), male, Ph.D. E-mail:

, correspAuthorsNote=
CUI Hongzhi (1974-), male, Ph.D., Professor. E-mail:
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水化硅酸钙(C-S-H)作为水泥基胶凝材料的基因,其结构变化对混凝土宏观性能发展至关重要。为了明确纤维素纳米晶(CNCs)在水泥中的改性机理,采用共沉淀法制备C-S-H凝胶,探讨了CNCs的形态效应及成核效应对C-S-H凝胶结构的影响。基于X射线衍射、透射电子显微镜、纳米压痕以及核磁共振等测试,结果显示CNCs表面携带的羟基(—OH)可络合Ca2+,随后与溶液中的SiO42-反应形成C-S-H凝胶,包裹在CNCs周围形成致密的网络结构。CNCs为C-S-H凝胶的沉淀和生长提供了额外的成核位点,促进了C-S-H凝胶聚合度的降低以及链长的缩短,并且显著提升了高密度C-S-H凝胶的含量。

, authors=郑大鹏, 方媛, 崔宏志, authorsList=郑大鹏, 方媛, 崔宏志, authorCompany=null, correspAuthors=崔宏志, authorNote=

郑大鹏(1991—),男,博士。

, correspAuthorsNote=
崔宏志(1974—),男,博士,教授。
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纤维素纳米晶对水化硅酸钙微观结构的改性机理
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郑大鹏 , 方媛 , 崔宏志
硅酸盐学报 | 水泥基材料研究新进展—研究论文 2023,51(5): 1146-1153
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硅酸盐学报 |水泥基材料研究新进展—研究论文 2023 , 51 (5) : 1146 -1153
纤维素纳米晶对水化硅酸钙微观结构的改性机理
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郑大鹏 , 方媛, 崔宏志
作者信息
  • 深圳大学土木与交通工程学院,滨海城市韧性基础设施教育部重点实验室,广东 深圳 518060
通讯作者:
崔宏志(1974—),男,博士,教授。
作者简介:

郑大鹏(1991—),男,博士。

Modification of Cellulose Nanocrystals on Microstructure of Calcium Silicate Hydrate
Dapeng ZHENG , Yuan FANG, Hongzhi CUI
Affiliations
  • College of Civil and Transportation Engineering, Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE), Shenzhen University, Shenzhen 518060, Guangdong China
  • Corresponding Author:
    CUI Hongzhi (1974-), male, Ph.D., Professor. E-mail:

    ZHENG Dapeng (1991-), male, Ph.D. E-mail:

出版时间: 2023-05-20 doi: 10.14062/j.issn.0454-5648.20220823
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水化硅酸钙(C-S-H)作为水泥基胶凝材料的基因,其结构变化对混凝土宏观性能发展至关重要。为了明确纤维素纳米晶(CNCs)在水泥中的改性机理,采用共沉淀法制备C-S-H凝胶,探讨了CNCs的形态效应及成核效应对C-S-H凝胶结构的影响。基于X射线衍射、透射电子显微镜、纳米压痕以及核磁共振等测试,结果显示CNCs表面携带的羟基(—OH)可络合Ca2+,随后与溶液中的SiO42-反应形成C-S-H凝胶,包裹在CNCs周围形成致密的网络结构。CNCs为C-S-H凝胶的沉淀和生长提供了额外的成核位点,促进了C-S-H凝胶聚合度的降低以及链长的缩短,并且显著提升了高密度C-S-H凝胶的含量。

纤维素纳米晶  /  水化硅酸钙  /  晶核效应  /  微观结构  /  聚合度

Calcium silicate hydrate (C-S-H) gel is a gene of cement-based cementitious materials, and its structural changes are crucial to the development of concrete macroscopic properties. To clarify the modification mechanism of cellulose nanocrystals (CNCs) in cement, C-S-H gels were prepared by a co-precipitation method, and the morphological and nucleation effects of CNCs on the microstructure of C-S-H gels were investigated by X-ray diffraction (XRD), transmission electron microscopy, nanoindentation, and nuclear magnetic resonance. The results show that the hydroxyl groups (—OH) on the surface of CNCs can complex Ca2+ ions, and then react with SiO42- ions in solution to form C-S-H gels that wraps around the CNCs. The CNCs can provide additional nucleation sites for the precipitation and growth of C-S-H gels, promote the reduction of the polymerization degree and the shortening of the chain length of the C-S-H gel, and increase the content of high-density C-S-H gel.

cellulose nanocrystals  /  calcium silicate hydrate  /  nucleation effect  /  microstructure  /  polymerization degree
郑大鹏, 方媛, 崔宏志. 纤维素纳米晶对水化硅酸钙微观结构的改性机理. 硅酸盐学报, 2023 , 51 (5) : 1146 -1153 . DOI: 10.14062/j.issn.0454-5648.20220823
Dapeng ZHENG, Yuan FANG, Hongzhi CUI. Modification of Cellulose Nanocrystals on Microstructure of Calcium Silicate Hydrate[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (5) : 1146 -1153 . DOI: 10.14062/j.issn.0454-5648.20220823
  • 国家重点研发计划(2019YFC1907203)
  • 深圳市基础研究重点项目(JCYJ20200109114203853)
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2023年第51卷第5期
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doi: 10.14062/j.issn.0454-5648.20220823
  • 接收时间:2022-09-30
  • 首发时间:2026-10-20
  • 出版时间:2023-05-20
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  • 收稿日期:2022-09-30
  • 修回日期:2022-10-10
基金
国家重点研发计划(2019YFC1907203)
深圳市基础研究重点项目(JCYJ20200109114203853)
作者信息
    深圳大学土木与交通工程学院,滨海城市韧性基础设施教育部重点实验室,广东 深圳 518060

通讯作者:

崔宏志(1974—),男,博士,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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