Nonconventional Curing for Fiber-Cement Material
V. dos Santosa, G.H. Tonolib, H. Savastano Jr
Abstract. The proposal presented in this paper is to use accelerated carbonation via carbonated water to modify the microstructure of the cementitious matrix. This particular process generates stabilization of the pore volume in the early age of the composite and avoiding the degradation of the cellulosic fiber, which is susceptible to the alkaline attack of the cementitious matrix. Chemical and morphological characterizations were performed, such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TG). The compounds were also physically (water absorption and density) and mechanically analyzed (four-point bending test: modulus of rupture, modulus of elasticity, limit of proportionality and specific energy) after 28 days of wet curing and after 200 soak & dry cycles. The results show that there is a need for a brief period of hydration and then it is possible to carbonate the materials. Carbonation yields substantial mechanical and physical gains, as well as greater protection of the fiber that does not mineralize.
Carbonated Water, Carbonation, Carbonated, Cellulose Fiber, Vegetable Fiber
Published online , 13 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: V. dos Santosa, G.H. Tonolib, H. Savastano Jr, ‘Nonconventional Curing for Fiber-Cement Material’, Materials Research Proceedings, Vol. 7, pp 95-107, 2018
The article was published as article 10 of the book Non-Conventional Materials and Technologies
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