Carbon fibers can be used to improve both mechanical properties and electrical conductivity of cement, allowing the preparation of a strengthened and toughened cement that can be used for self-monitoring applications. To guarantee both a good dispersion in water and a strong interaction with cement, surface functionalization of carbon fiber surface by reaction with acid was preferred to the use of a dispersing agent. The best oxidation conditions were chosen by using a Taguchi approach, and the samples con- tained the treated fibers were subjected to both mechanical and electrical tests, to determine flexural strength, toughness, compressive strength and electrical conductivity. It was shown that a not-too-strong oxidation by piranha solution was very effective to obtain well-dispersed fibers and a cement-composite with improved mechanical properties (in particular toughness) and electrical conductivity.
Cement-based composites containing functionalized carbon fibers / Lavagna, Luca; Musso, Simone; Ferro, Giuseppe Andrea; Pavese, Matteo. - In: CEMENT & CONCRETE COMPOSITES. - ISSN 0958-9465. - 88(2018), pp. 165-171. [10.1016/j.cemconcomp.2018.02.007]
|Titolo:||Cement-based composites containing functionalized carbon fibers|
|Data di pubblicazione:||2018|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.cemconcomp.2018.02.007|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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