Determination of rock strength and deformability of intact rocks

Tziallas, GP; Tsiambaos, G; Saroglou, H

dc.contributor.author	Tziallas, GP	en
dc.contributor.author	Tsiambaos, G	en
dc.contributor.author	Saroglou, H	en
dc.date.accessioned	2014-03-01T01:58:36Z
dc.date.available	2014-03-01T01:58:36Z
dc.date.issued	2009	en
dc.identifier.issn	10893032	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28693
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-65549140682&partnerID=40&md5=16adadaf73c94100da4e960fedc297d3	en
dc.subject	Index properties	en
dc.subject	Intact rock	en
dc.subject	Modulus of elasticity	en
dc.subject	Point load strength	en
dc.subject	Statistical relationships	en
dc.subject	Uniaxial compressive strength	en
dc.subject.other	Index properties	en
dc.subject.other	Intact rock	en
dc.subject.other	Modulus of elasticity	en
dc.subject.other	Point load strength	en
dc.subject.other	Statistical relationships	en
dc.subject.other	Uniaxial compressive strength	en
dc.subject.other	Acoustic wave velocity	en
dc.subject.other	Deformation	en
dc.subject.other	Density (specific gravity)	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Elasticity	en
dc.subject.other	Hardness	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Metamorphic rocks	en
dc.subject.other	Nanofluidics	en
dc.subject.other	Sedimentary rocks	en
dc.subject.other	Sedimentology	en
dc.subject.other	Compressive strength	en
dc.subject.other	compressive strength	en
dc.subject.other	deformation	en
dc.subject.other	elastic modulus	en
dc.subject.other	rock mechanics	en
dc.subject.other	statistical analysis	en
dc.title	Determination of rock strength and deformability of intact rocks	en
heal.type	journalArticle	en
heal.publicationDate	2009	en
heal.abstract	The paper presents the results of laboratory tests performed on a large number of intact sedimentary rock specimens (limestone, sandstone, siltstone) and metamorphic rocks from Greece. The physical properties (porosity, dry density), mechanical properties (uniaxial compressive strength), Young's modulus, point load index, Schmidt hardness) and dynamic properties (wave velocity) were determined. Furthermore, laboratory results of intact rock properties were collected and evaluated. From the statistical analysis of the data, regression equations were established amongst intact rock parameters. The ratio of rock strength and deformation modulus was investigated and its range was determined for all rock types. A comparison was made between existing empirical equations for the correlation of uniaxial strength, Schmidt hardness and dry density (σc-SHV-ρd). This comparison proved that Deere-Miller's (1966) chart yields the better prediction of the uniaxial compressive strength. Additionally, the correlation between uniaxial compressive strength, σ c, and point load strength, Is50, shows that an exponential fit gives a significantly better fit than a linear one. Finally, a multivariable analysis was done between tangent Young's modulus, uniaxial compressive strength and wave velocity (Et-σc-Vp) and an empirical correlation is proposed. © 2009 ejge.	en
heal.journalName	Electronic Journal of Geotechnical Engineering	en
dc.identifier.volume	14 G	en