Effects of recycled PET fibers on the mechanical properties and seawater curing of Portland cement-based concretes

Fraternali, Fernando; Spadea, Saverio; Berardi, Valentino Paolo

doi:10.1016/j.conbuildmat.2014.03.019

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This paper deals with an experimental study on the mechanical properties of recycled polyethylene terephthalate ﬁbre-reinforced concrete (RPETFRC) and its durability in an aggressive seawater environment. A Portland limestone cement-based concrete with a 0.38 water/cement ratio is used to cast cubic and prismatic specimens, in association with two different PET ﬁbres obtained through extrusion of recycled PET ﬂakes (R-PET). Some of these specimens were conditioned in the Salerno harbour seawater for a period of 6/12 months. Compressive strength and four-point bending tests are performed in order to investigate the mechanical properties of such RPETFRCs. Comparison of the present results and those in the literature for air-cured RPETRCs highlights the inﬂuence of the analysed R-PET ﬁbres on the mechanical properties of concretes showing different water/cement ratios and binders. The given results for seawater-cured specimens demonstrate that such a curing condition slightly modiﬁes the ﬁrst-crack strength and markedly reduces the toughness of the RPETFRCs examined in the present work.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/4518257

Titolo:	Effects of recycled PET fibers on the mechanical properties and seawater curing of Portland cement-based concretes
Autori:	FRATERNALI, Fernando SPADEA, SAVERIO BERARDI, Valentino Paolo
Data di pubblicazione:	2014
Rivista:	CONSTRUCTION AND BUILDING MATERIALS
Abstract:	This paper deals with an experimental study on the mechanical properties of recycled polyethylene terephthalate ﬁbre-reinforced concrete (RPETFRC) and its durability in an aggressive seawater environment. A Portland limestone cement-based concrete with a 0.38 water/cement ratio is used to cast cubic and prismatic specimens, in association with two different PET ﬁbres obtained through extrusion of recycled PET ﬂakes (R-PET). Some of these specimens were conditioned in the Salerno harbour seawater for a period of 6/12 months. Compressive strength and four-point bending tests are performed in order to investigate the mechanical properties of such RPETFRCs. Comparison of the present results and those in the literature for air-cured RPETRCs highlights the inﬂuence of the analysed R-PET ﬁbres on the mechanical properties of concretes showing different water/cement ratios and binders. The given results for seawater-cured specimens demonstrate that such a curing condition slightly modiﬁes the ﬁrst-crack strength and markedly reduces the toughness of the RPETFRCs examined in the present work.
Handle:	http://hdl.handle.net/11386/4518257
Appare nelle tipologie:	1.1.2 Articolo su rivista con ISSN

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