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Correlating uniaxial compressive strength with schmidt hardness, point load index, young's modulus, and mineralogy of gabbros and basalts (Northern Greece)

  • Aggistalis G. 
  • Alivizatos A. 
  • Stamoulis D. 
  • Stournaras G. 
Article

Abstract

An attempt has been made to correlate the uniaxial compressive strength and Young's modulus of gabbros and basalts with Schmidt hammer rebound number, the point load strength index, Is(50) and the degree of weathering. Sixty three samples of gabbro and thirty of basalt from the ophiolitic complex of Pindos zone (Northern Greece) have been collected by core drilling and tested accordingly. The results have been processed using techniques from the statistical software SPSS. Some of the equations produced show relatively high correlation coefficients, all significant at a significance level higher than 95%. The equations establish reliable prediction models for the uniaxial compressive strength and modulus of elasticity of the above rock types by means of simple tests which can be carried out in the field.

Keywords

Uniaxial Compressive Strength Point Load Stepwise Multiple Regression Analysis Point Load Strength Point Load Index 

Corrélations entre la résistance en compression simple et la dureté schmidt, l'essai sous charge ponctuelle, le module d'élasticité de young et la minéralogie de gabbros et de basaltes (Nord de la Grèce)

Résumé

Ce travail présente les corrélations entre la résistance à la compression simple et le module d'élasticité de Young de gabbros et de basaltes, et les mesures au marteau de Schmidt, la résistance à l'écrasement sous charge ponctuelle (Is(50), ainsi que le degré d'altération. Soixante échantillons de gabbro et trente échantillons de basalte provenant du complexe ophiolitique de Pinde dans le Nord de la Grèce ont été prélevés par sondage et examinés en laboratoire. Les résultats des essais ont été interprétés à l'aide du logiciel SPSS. Quelques-unes des équations produites sont associées à des coefficients de corrélation relativement élevés à un niveau significatif, de 95%. Ces résultats obtenus servent de base pour des modèles de prévision de la résistance et de la déformabilité des roches étudiées, à l'aide d'essais simples qui peuvent être mis en œuvre sur le terain.

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References

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Copyright information

© International Association of Engineering Geology 1980

Authors and Affiliations

  • Aggistalis G. 
    • 1
  • Alivizatos A. 
    • 2
  • Stamoulis D. 
    • 3
  • Stournaras G. 
    • 4
  1. 1.Malios Associates S.A.AthensGreece
  2. 2.Attiko Metpo A.E.AthensGreece
  3. 3.AthensGreece
  4. 4.Department of GeologyUniversity of AthensAthensGreece

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