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The engineering geological properties of the triassic dolomite of the Stefani area (Greece) in relation to its suitability in skid resistant pavement surface construction

  • J. Koumantakis
  • C. I. Sachpazis
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Summary

The Engineering Geological properties of the Middle-upper Triassic Dolomite have been studied as far as the suitability of its aggregates in the skid resistant pavament surface construction is concerned. Representative dolomite samples have been collected from the Stefani quarry, described in detail in terms of rock mass and rock material, and analysed chemically. Its petrography and thermo-differential analysis have also been included.

Among the tests performed were physical properties tests, shape indices tests, mechanical properties and wear resistance tests, and weathering simulation tests.

The investigations finally showed that it is a chemically and mineralogically pure, massive, strong, wear and weathering resistant, but, however, polishing susceptible, dolomite rock. Therefore it is not very suitable for the skid resistant pavement surface construction.

Keywords

Dolomite Unconfined Compressive Strength Pavement Surface Dolomite Rock Slake Durability Index 

Inaptitude des dolomies triasiques de stefani (Attique, Grèce) à être utilisées comme granulats pour chaussées en raison de leur glissance

Résumé

On a étudié les propriétés des dolomies du Trias moyen et supérieur de la région de Stefani en Attique et on a examiné leur utilisation comme granulats pour chaussés non glissantes. Des échantillons représentatifs des dolomies des carrières de Stefani ont été étudiés du point de vue chimie, minéralogie et pétrographie.

Parmi les essais qui ont été faits on signale les essais pour la détermination des propriétés physiques et mécaniques, les essais pour les indices de forme, pour la résistance à l'usure et à l'altération.

L'interprétation finale a donné comme résultat que la dolomie étudiée est chimiquement et minéralogiquement pure, massive, dure, de bonne résistance à l'usure et à l'altération, mais pourtant facilement polissable. Donc cette dolomie n'est pas utilisable comme granulats de chaussées antiglissantes, surtout sur les tronçons où les exigences sont importantes (virages etc.).

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Copyright information

© International Assocaition of Engineering Geology 1986

Authors and Affiliations

  • J. Koumantakis
    • 1
  • C. I. Sachpazis
    • 1
  1. 1.Nat. Technical University of AthensGreece

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