Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge

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dc.contributor.author	Sousa, S.	pt_BR
dc.contributor.author	Santos Silva, A.	pt_BR
dc.contributor.author	Velosa, A.	pt_BR
dc.contributor.author	Gameiro, A.	pt_BR
dc.contributor.author	Rocha, F.	pt_BR
dc.date.accessioned	2013-08-21T14:59:33Z	pt_BR
dc.date.accessioned	2014-10-20T16:31:37Z	pt_BR
dc.date.accessioned	2017-04-12T14:52:10Z
dc.date.available	2013-08-21T14:59:33Z	pt_BR
dc.date.available	2014-10-20T16:31:37Z	pt_BR
dc.date.available	2017-04-12T14:52:10Z
dc.date.issued	2013	pt_BR
dc.identifier.other	doi:10.4028/www.scientific.net/MSF.730-732.468	pt_BR
dc.identifier.uri	https://repositorio.lnec.pt/jspui/handle/123456789/1005107
dc.description.abstract	The concrete degradation caused by internal expansive reaction (IER) is a problem that affects many structures in the world. These reactions, which include the alkali-silica reaction (ASR)and the internal sulphate reaction (ISR) related with delayed ettringite formation, are very dangerous, due the expansive behavior of products formed, that cause the cracking of concrete. So it is urgent to find preventive methods to avoid or mitigate the onset of these reactions in new structures. This work aims to show the applicability of sludge from a tungsten mine in the mitigation of the IER. To evaluate the effect of sludge in the mitigation of ASR and ISR, mortar and concrete mixes were produced with 30% (%in mass) of cement replacement. The results obtained so far allow stating that tungsten mine sludge as Portland cement replacement could be effective in the ASR and ISR mitigation.	pt_BR
dc.description.sponsorship	The authors wish to acknowledge the Foundation for Science and Technology (FCT) for the financial support under project EXREACT (PTDC/CTM/65243/2006), IMPROVE (Improving the performance of aggregates for the inhibition of alkali-aggregate reactions in concrete,PTDC/ECM/115486/2009) and project DURATINET (Durable Transport Infrastructures in the Atlantic Area Network) for Transnational Programme Atlantic Area 2007-2003, co-financed by FEDER.	pt_BR
dc.language.iso	eng	pt_BR
dc.publisher	Trans Tech Publications	pt_BR
dc.rights	openAccess	pt_BR
dc.subject	Alkali-silica reaction	pt_BR
dc.subject	Delayed ettringite formation	pt_BR
dc.subject	Mitigation	pt_BR
dc.subject	Tungsten mine sludge	pt_BR
dc.subject	Concrete	pt_BR
dc.title	Mitigation of Internal Expansive Reaction: the Role of Tungsten Mine Sludge	pt_BR
dc.type	article	pt_BR
dc.identifier.localedicao	Switzerland	pt_BR
dc.description.figures	7	pt_BR
dc.description.tables	2	pt_BR
dc.description.pages	468-473pp	pt_BR
dc.description.volume	Vols. 730-732	pt_BR
dc.description.sector	DM/NMM	pt_BR
dc.identifier.proc	0204/14/16587	pt_BR
dc.identifier.proc	0202/11/17679	pt_BR
dc.identifier.proc	0204/14/17905	pt_BR
dc.identifier.proc	0204/17/17160	pt_BR
dc.description.magazine	Materials Science Forum	pt_BR