Concrete containing thermoplastic waste as aggregates - The effect on the rebars corrosion

Gavela, S; Ntziouni, A; Rakanta, E; Kouloumbi, N; Kasselouri-Rigopoulou, V

dc.contributor.author	Gavela, S	en
dc.contributor.author	Ntziouni, A	en
dc.contributor.author	Rakanta, E	en
dc.contributor.author	Kouloumbi, N	en
dc.contributor.author	Kasselouri-Rigopoulou, V	en
dc.date.accessioned	2014-03-01T02:51:34Z
dc.date.available	2014-03-01T02:51:34Z
dc.date.issued	2008	en
dc.identifier.issn	17433541	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35568
dc.subject	Aggregates	en
dc.subject	Concrete	en
dc.subject	EIS	en
dc.subject	LPR	en
dc.subject	Reinforcement corrosion	en
dc.subject	Thermoplastic waste	en
dc.subject.other	aggregate	en
dc.subject.other	concrete	en
dc.subject.other	conference proceeding	en
dc.subject.other	corrosion	en
dc.subject.other	environmental impact	en
dc.subject.other	plastic	en
dc.subject.other	reinforcement	en
dc.subject.other	waste	en
dc.subject.other	waste management	en
dc.title	Concrete containing thermoplastic waste as aggregates - The effect on the rebars corrosion	en
heal.type	conferenceItem	en
heal.identifier.primary	10.2495/WM080461	en
heal.identifier.secondary	http://dx.doi.org/10.2495/WM080461	en
heal.publicationDate	2008	en
heal.abstract	A lot of research has been performed on the utilization of waste products in concrete because it is widely used and has a long service life, which means that the waste is being removed from the waste stream for a long period. In the frame of an extended research program dealing with the utilization of thermoplasticwaste, the effect on the reinforcement corrosion of concretes containing the above polymers as aggregates has been studied. As the amount of aggregates required in concrete is large, the environmental benefits are not only related to the safe disposal of the waste, but also to the environmental impacts arising from the extraction of aggregates, which include the visual intrusion and the loss of countryside. Three series of reinforced concrete specimens were prepared, one containing 12% by volume of aggregates high density polyethylene (HDPE), one containing 12% by volume of aggregates polypropylene (PP) and one without replacement of conventional aggregates. The specimens were cured in water for 7 days and then they were immersed in 3.5%wt NaCl solution. The following measurements were carried out in order to investigate if the corrosion behavior of the rebars is changed due to the replacement of the conventional aggregates by the thermoplastics: Potential versus time evolution, Linear Polarization, Electrochemical Impedance Spectroscopy, Carbonation Depth. Results showed that the replacement of conventional aggregates by the two polymers studied does not provoke rebars corrosion.	en
heal.journalName	WIT Transactions on Ecology and the Environment	en
dc.identifier.doi	10.2495/WM080461	en
dc.identifier.volume	109	en
dc.identifier.spage	449	en
dc.identifier.epage	458	en