Experimental investigation of the mechanical properties of Alfas stone

Konstas N. Kaklis, Stelios P. Mavrigiannakis, Zach G. Agioutantis, Emmanouil K. Steiakakis, Foteini K. Stathogianni

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


This paper focuses on the experimental investigation of the mechanical properties of the Alfas natural building stone. Two series of uniaxial compression tests and indirect tensile tests (Brazilian tests) were performed in order to determine the uniaxial compressive strength and the indirect tensile strength respectively. Different sets of cylindrical specimens and circular discs were prepared by varying their geometry in order to examine the size effect on the respective strength values. Also, the size effect was investigated with respect to the calculated intact rock modulus and Poisson’s ratio. All specimens were prepared by following the ISRM suggested methods and the load was applied using a stiff 1600 kN MTS hydraulic testing machine and a 500 kN load cell. Strain was measured using biaxial 0/90 stacked rosettes appropriately attached on each specimen.

Original languageEnglish
Pages (from-to)18-32
Number of pages15
JournalFrattura ed Integrita Strutturale
Issue number40
StatePublished - 2017

Bibliographical note

Funding Information:
This research has been co-financed by the European Union (European Social Fund-ESF) and Greek national funds through the Operational Program ?Education and Lifelong Learning? of the National Strategic Reference Framework (NSRF) - Research Funding Program: THALES: Reinforcement of the interdisciplinary and/or interinstitutional research and innovation. The authors would also like to thank the anonymous reviewers of this paper for their constructive comments and recommendations.

Publisher Copyright:
© 2017, Gruppo Italiano Frattura. All rights reserved.


  • Alfas
  • Building stones
  • Indirect tensile strength
  • Size effect
  • Uniaxial compressive strength

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering


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