Optimum Dispersion Parameters of Carbon Nanotubes: Concrete Strength by Response Surface Methodologies
Abstract
"This paper implements Response Surface Methodologies (RSM) techniques to illustrate
the maximum carbon nanotubes (CNTs)-concrete mechanical properties responses to the
length, weight fraction and treatment variables. Mixes with different CNTs’ content were prepared and tested for flexure, compression and tension. RSM analysis showed that
the highest effect on the strengths was due to the CNTs’ content variable. The analysis
showed that a weight fraction of 0.3 wt.% of non-treated CNTs is required to achieve
the maximum flexural, compressive and tensile strengths in a batch as per the predicted model. RSM analysis also showed that maximum flexural strength will be obtained by using 0.2 wt. % non-treated long CNTs, 0.25 wt. % non-treated short CNTs and 0.03 wt. % treated long CNTs, respectively."
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