Development of Green Building Materials through Alkali Activation of Construction and Demolition Wastes

Kioupis, D.; Skaropoulou, A.; Tsivilis, S.; Kakali, G.

dc.contributor.author	Kioupis, D.	en
dc.contributor.author	Skaropoulou, A.	en
dc.contributor.author	Tsivilis, S.	en
dc.contributor.author	Kakali, G.	en
dc.date.accessioned	2018-07-19T11:54:26Z
dc.date.available	2018-07-19T11:54:26Z
dc.date.issued	2018-07-19
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/47360
dc.language.iso	en	en
dc.rights	Default License
dc.subject	CDWs	en
dc.subject	geopolymers	en
dc.subject	alkali activation	en
dc.subject	Taguchi	en
dc.title	Development of Green Building Materials through Alkali Activation of Construction and Demolition Wastes	en
heal.type	conferenceItem
heal.classification	Construction materials	en
heal.classification	Wastes	el
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2017
heal.bibliographicCitation	D. Kioupis, A. Skaropoulou, S. Tsivilis, G. Kakali, Development of Green Building Materials through Alkali Activation of Construction and Demolition Wastes, 5th International Conference on Sustainable Solid Waste Management, Athens, (2017), 1-9.	en
heal.abstract	This study deals with the alternative management of the construction and demolition wastes. In particular, it suggests the reuse of waste bricks and tiles as raw materials for the production of geopolymers which constitute a class of building materials with low environmental footprint. In order to evaluate the geopolymerization potential of the raw materials, alkali dissolution tests which determine the Si and Al leachability were conducted. The brick waste presented a slightly higher affection compared to the tile waste by the alkaline attack. In any case, the degree of dissolution is higher in NaOH than in KOH solutions. The geopolymer synthesis was optimized through the Taguchi multifactorial designing model of experiments based on the compressive strength of the final products. The results showed that the factors with the highest contribution on the mechanical behavior of the specimens are the alkalinity (R/Al) and the soluble silicon content ([Si]/R2O) of the activation solutions. The delivery of the products with enhanced compressive strength values (41 MPa) is achieved for the following synthetic factor combination: [Si]/R2O =1, R/Al=1.0, Na/Na+K=0.5, Τ=90oC and t =72h.	en
heal.fullTextAvailability	true
heal.conferenceName	5th International Conference on Sustainable Solid Waste Management	en
heal.conferenceItemType	full paper