Autogenous Shrinkage and Crack Resistance of Carbon Nanotubes Reinforced Cement-Based Materials

被引：24

作者：

Liu, Yanming ^{[1
]}

Shi, Tao ^{[1
,2
]}

Zhao, Yujing ^{[1
,3
]}

Gu, Yuan ^{[1
]}

Zhao, Zhifang ^{[1
]}

Chen, Jiabin ^{[1
]}

Zheng, Bingmiao ^{[1
]}

Shi, Shichong ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Civil Engn, Hangzhou 310023, Peoples R China

[2] Key Lab Civil Engn Struct & Disaster Prevent & Mi, Hangzhou 310023, Peoples R China

[3] Shanghai Baosteel New Bldg Mat Co Ltd, Shanghai 201999, Peoples R China

来源：

INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS | 2020年 / 14卷 / 01期

基金：

中国国家自然科学基金;

关键词：

cement-based materials; carbon nanotubes; autogenous shrinkage; crack resistance; MECHANICAL-PROPERTIES; CONCRETE; PERFORMANCE; FIBER; COMPOSITES; ADMIXTURE; BEHAVIOR;

D O I：

10.1186/s40069-020-00421-0

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Cracking caused by shrinkage deformation of cement-based materials at early age is a major problem leading to material failure in restrained conditions. Carbon nanotubes (CNTs) are incorporated into cement-based materials, and the autogenous shrinkage and crack resistance of the new composite materials obtained by linear shrinkage and ring tests are studied to solve the destruction of the materials caused by the shrinkage of cement-based materials. The results showed that addition of CNTs significantly inhibited the autogenous shrinkage of cement-based materials with maximum reduction rate above 40%. CNTs also significantly improved the cracking resistance of cement-based materials. The optimal effect was noticed at CNTs content of 0.1 wt%. The incorporation of CNTs not only inhibits the autogenous shrinkage of cement-based materials, but also inhibits the drying shrinkage of cement-based materials to some extent. Therefore, carbon nanotubes have the potential to solve the destruction of materials caused by shrinkage of cement-based materials.

引用

页数：10

共 29 条

[1] Performance of modified self-healing concrete with calcium nitrate microencapsulation [J].

Al-Ansari, Mohammed ;

Abu-Taqa, Ala G. ;

Hassan, Marwa M. ;

Senouci, Ahmed ;

Milla, Jose .

CONSTRUCTION AND BUILDING MATERIALS, 2017, 149 :525-534

[2] Contribution of CNTs/CNFs morphology to reduction of autogenous shrinkage of Portland cement paste [J].

Blandine, Feneuil ;

Habermehi-Cwirzen, Karin ;

Cwirzen, Andrzej .

FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING, 2016, 10 (02) :224-235

[3] The use of microfine cement to enhance the efficacy of carbon nanofibers with respect to drying shrinkage crack resistance of portland cement mortars [J].

Hogancamp, Joshua ;

Grasley, Zachary .

CEMENT & CONCRETE COMPOSITES, 2017, 83 :405-414

[4] Early age stability of concrete pavement by using hybrid fiber together with MgO expansion agent in high altitude locality [J].

Huang, Kaijian ;

Deng, Min ;

Mo, Liwu ;

Wang, Yuangang .

CONSTRUCTION AND BUILDING MATERIALS, 2013, 48 :685-690

[5] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[6]

Jensen O.M., 2007, Standard Test Method for Autogenous Strain of Cement Paste and Mortar

[7] Autogenous shrinkage of high performance concrete containing mineral admixtures under different curing temperatures [J].

Jiang, Chenhui ;

Yang, Yang ;

Wang, Yong ;

Zhou, Yuenian ;

Ma, Chengchang .

CONSTRUCTION AND BUILDING MATERIALS, 2014, 61 :260-269

[8] Shrinkage characteristics of structural nano-synthetic fibre-reinforced cementitious composites [J].

Lee, Su-Jin ;

Won, Jong-Pil .

COMPOSITE STRUCTURES, 2016, 157 :236-243

[9] Electrical transport in carbon nanotube fibres [J].

Lekawa-Raus, Agnieszka ;

Gizewski, Tomasz ;

Patmore, Jeff ;

Kurzepa, Lukasz ;

Koziol, Krzysztof K. .

SCRIPTA MATERIALIA, 2017, 131 :112-118

[10] Mechanical behavior and microstructure of cement composites incorporating surface-treated multi-walled carbon nanotubes [J].

Li, GY ;

Wang, PM ;

Zhao, XH .

CARBON, 2005, 43 (06) :1239-1245

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