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Correlating schmidt hardness with compressive strength and young’s modulus of carbonate rocks

  • C. I. Sachpazis
Article

Abstract

Schmidt hammer has increasingly been used world-wide as an index test for a quick rock strength and deformability characterization. The reason is mainly due to its rapidity and easyness in execution, non destructiveness, simplicity, portability and low cost.

Twentynine different types of Carbonate rocks from Greek territory and four ones from England have been collected and tested. The tests include the determination of Schmidt hammer rebound hardness, (N) number, Tangent Young’s modulus, (Et), and Uniaxial compressive strength (U.C.S.).

Finally, these parameters were correlated and regression equations, of high practical value, were estanlished among N, Et and U.C.S., all presenting high coefficients of determination (R2).

Keywords

Compressive Strength Carbonate Rock Uniaxial Compressive Strength Rock Material Marble Dolomite 

Corrélations entre la dureté au marteau schmidt et la résistance à la compression simple et à la déformation (module young) de roches carbonatées

Résumé

Le marteau Schmidt s’utilise de plus en plus dans le monde comme un essai indicateur de qualification rapide de la résistance à la compression simple et de la déformation des roches.

Les raisons en sont surtout la rapidité et la facilité d’exécution qui ne provoquent pas de destruction, la simplicité, la portabilité et le faible coût.

Vingt neuf types différents de roches carbonatées de Grèce, et quatre types d’Angleterre ont été réunis et examinés. Les essais comprennent la désignation de la dureté du marteau SCHMIDT, le numéro (N) du module d’élasticité de Young (Et) et la résistance à la compression simple (U.C.S.). Ces paramètres ont été corrélés et on a déterminé les relations entre N, Et et U.C.S., qui présentent toutes des coefficients de corrélation élevés (R2) d’une grande valeur pratique.

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Copyright information

© International Assocaition of Engineering eology 1990

Authors and Affiliations

  • C. I. Sachpazis
    • 1
  1. 1.AthensGreece

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