A study on the gas permeability of concrete made of cement raw mix containing transition element oxides

Kakali, G; Kasselouri, V; Sioutis, S

dc.contributor.author	Kakali, G	en
dc.contributor.author	Kasselouri, V	en
dc.contributor.author	Sioutis, S	en
dc.date.accessioned	2014-03-01T01:44:38Z
dc.date.available	2014-03-01T01:44:38Z
dc.date.issued	1996	en
dc.identifier.issn	02636050	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24437
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0343381556&partnerID=40&md5=81b6c13c39efb1c85db6221cda412b69	en
dc.title	A study on the gas permeability of concrete made of cement raw mix containing transition element oxides	en
heal.type	journalArticle	en
heal.publicationDate	1996	en
heal.abstract	The subject of this paper is the effect of transition element oxides, added in the cement raw meal, on the intrinsic permeability of the concrete. Ordinary Portland cements were prepared, in pro-pilot plant scale rom raw mixes coground with 1.5% by weight of each of ZnO, V2O5, Cr2O3 and ZrO2. Raw meal of industrial origin and chemical grade oxides were used. The samples were thermally treated up to 4450°C, rapidly cooled in air and coground with gypsum. The completion of the sintering reactions and the formation of the principal clinker phases were confirmed by means of differential scanning calorimetry and X-ray diffraction. After the preparation of concrete specimens, the permeability of N2 was measured. As it is concluded, the addition of V2O5 and especially Cr2O3 to the cement raw meal decreases the permeability of the concrete while the addition of ZrO2 and ZnO leads to the opposite effect. The increase of the ratio water/cement (w/c) causes the increase of the permeability.	en
heal.journalName	World Cement	en
dc.identifier.volume	27	en
dc.identifier.issue	10	en
dc.identifier.spage	77	en
dc.identifier.epage	79	en