The role of carbon nanotube on hydration kinetics and shrinkage of cement composite

被引：59

作者：

Tafesse, Million ^{[1
]}

Kim, Hyeong-Ki ^{[1
]}

机构：

[1] Chosun Univ, Sch Architecture, 309 Pilmun Daero, Gwangju 501759, South Korea

来源：

COMPOSITES PART B-ENGINEERING | 2019年 / 169卷

关键词：

Carbon nanotube (CNT); Silica fume; Shrinkage; Degree of hydration; Rate of hydration; Porosity; X-ray diffraction (XRD); MECHANICAL-PROPERTIES; ELECTRICAL-PROPERTIES; AUTOGENOUS SHRINKAGE; STRENGTH; MICROSTRUCTURE; PASTE; CONCRETE; BEHAVIOR; MORTAR; BINDER;

D O I：

10.1016/j.compositesb.2019.04.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hydration kinetics and shrinkage of carbon nanotube (CNT)/cement composites were investigated experimentally. The effect of CNTs mixed in a paste matrix was evaluated in terms of the degree of hydration and heat of hydration to evaluate the overall hydration kinetics. Furthermore, the microstructure and the reaction products were characterized using mercury intrusion porosimetry, X-ray diffraction, and chemical shrinkage for further analysis. Autogenous and dry shrinkages were measured, and the results were analyzed based on the hydration kinetics. The experimental results show that pure CNTs are not capable of activating or delaying the hydration products; rather, they offer a micro-filler capability. In addition, autogenous shrinkage increased despite the amount of added CNTs in some cases.

引用

页码：55 / 64

页数：10

共 58 条

[1] On the aspect ratio effect of multi-walled carbon nanotube reinforcements on the mechanical properties of cementitious nanocomposites [J].

Abu Al-Rub, Rashid K. ;

Ashour, Ahmad I. ;

Tyson, Bryan M. .

CONSTRUCTION AND BUILDING MATERIALS, 2012, 35 :647-655

[2]

[Anonymous], 2012, NANOTECHNOLOGY CONCR

[3] Mechanical and electrical properties of nanotubes [J].

Bernholc, J ;

Brenner, D ;

Nardelli, MB ;

Meunier, V ;

Roland, C .

ANNUAL REVIEW OF MATERIALS RESEARCH, 2002, 32 :347-+

[4] Finite element analysis of carbon nanotube/cement composite with degraded bond strength [J].

Chan, Lai Yin ;

Andrawes, Bassem .

COMPUTATIONAL MATERIALS SCIENCE, 2010, 47 (04) :994-1004

[5] A polycarboxylate as a superplasticizer for montmorillonite clay in cement: Adsorption and tolerance studies [J].

Chen, Gang ;

Lei, Jiaheng ;

Du, Yong ;

Du, Xiaodi ;

Chen, Xuebing .

ARABIAN JOURNAL OF CHEMISTRY, 2018, 11 (06) :747-755

[6] Synthesis of a Novel Polycarboxylate Superplasticizer with Carboxyl Group as Side Chain Terminal Group to Enhance Its Clay Tolerance [J].

Chen Gang ;

Lei Jiaheng ;

Du Yong ;

Chen Xuebing .

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION, 2018, 33 (01) :226-232

[7] The influences of admixtures on the dispersion, workability, and strength of carbon nanotube-OPC paste mixtures [J].

Collins, Frank ;

Lambert, John ;

Duan, Wen Hui .

CEMENT & CONCRETE COMPOSITES, 2012, 34 (02) :201-207

[8] Surface decoration of carbon nanotubes and mechanical properties of cement/carbon nanotube composites [J].

Cwirzen, A. ;

Habermehl-Cwirzen, K. ;

Penttala, V. .

ADVANCES IN CEMENT RESEARCH, 2008, 20 (02) :65-73

[9]

Das BB, 2014, INT J MACH MACH MAT, V2

[10] Assembly of nanodevices with carbon nanotubes through nanorobotic manipulations [J].

Fukuda, T ;

Arai, F ;

Dong, LX .

PROCEEDINGS OF THE IEEE, 2003, 91 (11) :1803-1818

← 1 2 3 4 5 6 →