Role of Dispersion of Multiwalled Carbon Nanotubes on Compressive Strength of Cement Paste

World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering Pub Date : 2014-01-04 DOI:10.5281/ZENODO.1090913

J. Bharj, Sarabjit Singh, S. Chander, Rabinder Singh

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引用次数: 14

Abstract

The outstanding mechanical properties of Carbon nanotubes (CNTs) have generated great interest for their potential as reinforcements in high performance cementitious composites. The main challenge in research is the proper dispersion of carbon nanotubes in the cement matrix. The present work discusses the role of dispersion of multiwalled carbon nanotubes (MWCNTs) on the compressive strength characteristics of hydrated Portland IS 1489 cement paste. Cement-MWCNT composites with different mixing techniques were prepared by adding 0.2% (by weight) of MWCNTs to Portland IS 1489 cement. Rectangle specimens of size approximately 40mm × 40mm ×160mm were prepared and curing of samples was done for 7, 14, 28 and 35days. An appreciable increase in compressive strength with both techniques; mixture of MWCNTs with cement in powder form and mixture of MWCNTs with cement in hydrated form 7 to 28 days of curing time for all the samples was observed.

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多壁碳纳米管分散对水泥浆体抗压强度的影响

碳纳米管(CNTs)优异的力学性能使其成为高性能胶凝复合材料的增强材料。研究中的主要挑战是碳纳米管在水泥基体中的适当分散。本文讨论了多壁碳纳米管(MWCNTs)的分散对水合硅酸盐IS 1489水泥浆体抗压强度特性的影响。通过在Portland IS 1489水泥中添加0.2%(重量)的MWCNTs，制备了不同混合技术的水泥- MWCNTs复合材料。制备尺寸约为40mm × 40mm ×160mm的矩形试件，分别进行7、14、28和35d的养护。使用这两种技术可显著提高抗压强度;观察粉末形式的MWCNTs与水泥的混合物以及水化形式的MWCNTs与水泥的混合物在养护时间为7至28天时的情况。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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World Academy of Science, Engineering and Technology, International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering

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