Investigation of the possibility of estimating concrete strength by porosity measurements

Kolias, S

dc.contributor.author	Kolias, S	en
dc.date.accessioned	2014-03-01T01:09:57Z
dc.date.available	2014-03-01T01:09:57Z
dc.date.issued	1994	en
dc.identifier.issn	0025-5432	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11253
dc.subject	Correlation Coefficient	en
dc.subject.classification	Construction & Building Technology	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Cement	en
dc.subject.other	Lab Tests	en
dc.subject.other	Mortar	en
dc.subject.other	Porosity	en
dc.subject.other	Strength	en
dc.subject.other	Cements	en
dc.subject.other	Concrete aggregates	en
dc.subject.other	Correlation methods	en
dc.subject.other	Mechanical variables measurement	en
dc.subject.other	Mortar	en
dc.subject.other	Porosity	en
dc.subject.other	Strength of materials	en
dc.subject.other	Calculated average paste porosity	en
dc.subject.other	Cube strength	en
dc.subject.other	Total water porosity measurement	en
dc.subject.other	Concrete testing	en
dc.title	Investigation of the possibility of estimating concrete strength by porosity measurements	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF02473043	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF02473043	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	The possibility of estimating concrete or mortar strength by measuring the total water porosity by a very simple method is investigated. Cube strengths of mortar and concrete specimens are correlated with water porosity measured from 'intact' pieces taken from the failure cones of the crushed cubes. It is shown that it is not possible to acquire a satisfactory correlation of strength and the measured total water porosity of the mortar or concrete mix. However, a very promising correlation (correlation coefficient R>93%) is obtained if the 'calculated average paste porosity' Pp is substituted for the measured total water porosity of the mix Pm . Pp can be determined from the measured porosity Pm of the mix, the porosity of the aggregates and the volumetric proportions of the constituents. For the range of strengths investigated, it can be inferred that the strength class of a cement (OPC 35 or OPC 45) does not significantly influence the correlation, but a slightly different correlation seems to exist for pozzolanic cements. © 1994 RILEM.	en
heal.publisher	Kluwer Academic Publishers	en
heal.journalName	Materials and Structures	en
dc.identifier.doi	10.1007/BF02473043	en
dc.identifier.isi	ISI:A1994NU03000003	en
dc.identifier.volume	27	en
dc.identifier.issue	5	en
dc.identifier.spage	265	en
dc.identifier.epage	272	en