Modeling of Cement-CNT Nanocomposites Mechanical Properties by Micromechanical Method

Subject Areas :

Merdad  Khakbiz ¹ (استادیار، عضو هیات علمی، دانشکده علوم وفنون نوین، گروه علوم زیستی، دانشگاه تهران)
Hasan  Ahmadi ² (استادیار، عضو هیات علمی، گروه عمران، واحد رودهن، دانشگاه آزاد اسلامی)
Mehdi  Omidi ³ (مربی، گروه مواد، واحد نجف آباد، دانشگاه آزاد اسلامی)

Received: 2016-06-20 Accepted : 2016-06-20 Published : 2016-05-21

Keywords: Modeling, Carbon nanotubes, nanocomposite, Cement, Micromechanical,

Abstract :

In this paper cement/carbon nanotube mechanical properties were predicted by micromechanical model.  The effects of CNT properties such as internal, external diameters and its length as well as its volume percent on Young's modulus were investigated by this model. In addition, the effect of representative volume element (RVE) element shape (cylindrical, cubic and hexagonal) on Young's Modulus (E) was studied systematically. Finally, the predicted results were compared with cement /CNT experimental results. The predicted results showed that by increasing external CNT diameters, CNT Volume percent and its length, Young's Modulus (E) was increased. However, the internal diameter of CNT didn't have significant effect on E. These data indicated that hexagonal element shape resulted higher E rather than square and cylindrical RVE shape. Comparison of predicated E and experimental E showed that the proposed model could predict young modules with high accuracy. These results showed that micro mechanical modeling is a valuable method for predication of cement/CNT mechanical properties in nanoscale.

References:

[1]     A. G. Mamalis, L. O. G. Vogtländer & A. Markopoulos, “Nanotechnology and Nanostructured Materials: Trends in Carbon Nanotubes”, Precision Engineering, Vol. 28, pp. 16–30, 2004.

 

[2]       J. Makar, J. Margeson & J. Luh, “Carbon Nanotube/Cement Composites – Early Results and Potential Applications”, 3rd International Conference on Construction Materials: Performance, Innovation and Structural Implications: Vancouver, B.C, Canada, 2005.

 

[3]     J. M Makar & J. J. Beaudoin, “Carbon nanotubes and their application in the constructionIndustry”, Proceedings of ¹st International Symposium on Nanotechnology in Construction, Vol. 23-25, 2003.

 

[4]     B. Han, X. Yu1 & E. Kwon, “A Self-sensing Carbon Nanotube/Cement Composite for Traffic Monitoring”, Nanotechnology, Vol. 20, pp. 445501 -445505, 2009

 

[5]     L. Raki, J. Beaudoin, R. Alizadeh, J. Makar & T. Sato, “Cement and Concrete Nanoscience and Nanotechnology”, Materials, Vol. 3, pp. 918-94, 2010.

 

[6]       م. رضا پویامهر و س. اطرج، " تاثیر افزودن نانوذرات اکسید کرم بر خواص سیمان های آلومینایی حاوی اسپینل آلومینات منیزیم، فصلنامه علمی پژوهشی فرآیندهای نوین در مهندسی مواد، شماره 3، 1-9 ،پاییز 1393،

 

[7]       م. جلالی، ا.ع. نوربخش و ا. منشی، "اثر افزودنی نانو اسپینل آلومینا - منیزیا بر مقاومت به هیدراتاسیون جرمهای ریختنی بدون سیمان منیزیایی" فصلنامه علمی پژوهشی فرآیندهای نوین در مهندسی مواد ، شماره 2، 67-76، تابستان 1394

 

[8]     L. Y. Chan & B. Andrawes, “Characterization of the Uncertainties in the Constitutive Behavior of Carbon Nanotube/Cement composites”, Adv. Mater. Vol. 10, pp. 45007-45020, 2009.

 

[9]     E. YANG & V. C. Li, “Micromechanical Model For Fiber Cement Optimization AND Component Taloring”, IIBCC, Sao Paulo, Brazil, 2006.

 

[10] Y. J. Liu & X. L. Chen, “Evaluations of the Effective Material Properties of Carbon Nanotube-based Composites Using a Nanoscale Representative Volume Element”, Mechanics of Materials, Vol. 35, pp. 69–81, 2003.

 

[11] B. N. Hu, H. Fukunaga, C. LU, M. Kmaeyama & B. Yan, “Prediction of Elastic Properties of Carbon Nanotube Reinforced Composites”, Proc. R, Vol. 461A, pp. 1685–1710, 2005.

 

[12] M. R. Davoudabadi, R. Ebrahimi Naghani & A. Fereidoon, “Prediction of Young's Modulus of Carbon Nanotube Reinforced Composites in Axial Direction with Nonlinear Springs”, World Applied Sciences Journal, Vol. 10, pp. 1007-1019, 2010.

 

[13] Michael Rieth and Wolfram Schommers, Handbook of Theoretical and Computational Nanotechnology American Scientific Publishers, USA.

 

[14] Y. S. d. Ibarra, J. J. Gaitero, E. Erkizia & I. Campillo, “Atomic Force Microscopy and Nanoindentation of Cement Pastes with Nanotube Dispersions”, phys. Stat, Vol. 203A, pp. 1076–1081, 2006.

 

[15] G. Y. Li, P. M. Wang & X. Zhao, “Mechanical Behavior and Microstructure of Cement Composites Incorporating Surface-treated Multi-walled Carbon Nanotubes”, Carbon, Vol. 43, pp. 1239–1245, 2005,

 

[16] M. S. Morsy, S. H. Alsayed & M. Aqel, “Hybrid Effect of Carbon Nanotube and Nano-clay on Physico-Mechanical Properties of Cement Mortar”, Construction and Building Materials, Vol. 25, pp. 145–149, 2011.

 

[17] Br. M. Tyson1, R. K. Abu Al-Rub, A. Yazdanbakhsh & Z. Grasley, “Carbon Nanotubes and Carbon Nanofibers for Enhancing the Mechanical Properties of Nanocomposite Cementitious Materials”, Materials in Civil Engineering Accepted January, Vol. 5, 2011;

 

[18] S. Musso, J. Tulliani, G. Ferro & A. Tagliaferro, “Influence of carbon Nnotubes Structure on the Mechanical Behavior f Cement Composites Composites Science and Technology”, Vol. 69, pp. 1985–1990, 2009.

[19]    ر .کشاورز، ا. محبی و ج. مرشدیان، "مطالعه  رفتار مکانیکی و میکروساختار کامپوزیت بتن - نانولوله کربنی چند جداره اصلاح شده با عامل کربوکسلیک"، مجله تحقیقات مواد نانوکامپوزیتی 236-229، 1388.

 

M. S. Konsta-Gdoutos, Z. S. Metaxa & S. P. Shah, “Multi-scale Mechanical and Fracture Characteristics and Early-age Strain Capacity of High Performance Carbon Nanotube/Cement Nanocomposites” ,Cement & Concrete Composites , Vol. 32, pp. 110–115, 2010.