Nanotechnology in Civil Infrastructure: A Paradigm Shift by Baoguo Han, Xun Yu, Jinping Ou (auth.), Kasthurirangan

By Baoguo Han, Xun Yu, Jinping Ou (auth.), Kasthurirangan Gopalakrishnan, Bjorn Birgisson, Peter Taylor, Nii O. Attoh-Okine (eds.)

Nanotechnology in Civil Infrastructure is a state-of-the artwork reference resource describing the most recent advancements in nano-engineering and nano-modification of development fabrics to enhance the majority homes, improvement of sustainable, clever, and shrewdpermanent concrete fabrics in the course of the integration of nanotechnology established self-sensing and self-powered fabrics and cyber infrastructure applied sciences, evaluation of nanotechnology purposes in pavement engineering, improvement of novel, within your budget, high-performance and long-lasting concrete items and techniques via nanotechnology-based cutting edge processing of cement and cement paste, and complex nanoscience modeling, visualization, and dimension platforms for characterizing and trying out civil infrastructure fabrics on the nano-scale. Researchers, practitioners, undergraduate and graduate scholars engaged in nanotechnology comparable learn will locate this publication very worthwhile.

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To 2 wt. %). He found that the critical damping ratio of nanocomposites increase with concentrations of CNTs. 6 times than that of plain cement paste. 6 Potential Structural Applications of CNTs Reinforced Cement-Based Materials The goal of developing multifunctional and smart CNTs reinforced cement-based materials is to set up multifunctional and smart structures. Because the study on the piezoresistivity of CNTs reinforced cement-based materials begins latter, less work is focused on the research and application of multifunctional and smart structures fabricated using CNTs reinforced cement-based materials.

Fig. 25 CNTs’ pull-out [Raki et al. 2010]. It is worth noting that the complex chemistry and physical structure of CNTs reinforced cement-based materials mean that some fundamental issues need further to be explored at the nanoscale. 1 Electrical and Piezoresistive of CNTs The unique electrical properties of CNTs are to a large extent derived from their 1-D character and the peculiar electronic structure of graphite. Resistance occurs when an electron collides with some defect in the crystal structure of the material through which it is passing.

Therefore, the conductive and piezoresistive behaviors of the nanocomposites are subjected to four basic aspects as below. (1) Intrinsic resistance of CNTs The intrinsic resistance of CNTs reflects the electron transmission behavior in CNTs, which will affect the transmission behavior of electron within the whole nanocomposites. The intrinsic resistance of CNTs is governed by CNTs’ types, CNTs’ surface condition, load condition, and so on. For examples, the carboxyl functionalization might introduce structural defects resulting in the decrease of conductive properties of CNTs and nanocomposites.

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