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Study on Iraqi limestone aggregates in bituminous mixes

Etude sur les granulats calcaires en melanges bitumineux Irak

  • International Symposium on Aggregates
  • Theme IV Aggregates for Pavements
  • Published:
Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur Aims and scope Submit manuscript

Abstract

In North Iraq, there are two major sources of crushed stone aggregates, the Darbandibazian source of limestones and the Kalachwalan source. Limestones are generally not used in bituminous mixes as they are considered weak and unsuitable.

In this study, these two available sources of crushed stone aggregates are rationally analysed for their engineering properties and suitability for use in bituminous mixes.

It was observed that limestones do meet the Marshall test requirements of a bituminous mix and can be used satisfactorily, with slightly higher percentage of bitumen. Huge amount of locally available limestones thus have a potential for use.

Résumé

En Irak du Nord il y a deux principales sources de granulats concassés: les calcaires du Darbandibazian et du Kalachwalan. D'habitude les calcaires ne sont pas employés dans les mélanges bitumineux car on les trouve insuffisamment durs et peu appropriés.

Dans cette étude, ces deux sources de granulats concassés sont analysées de façon rationnelle en ce qui concerne leurs propriétés en génie civil et leur emploi possible en mélanges bitumineux.

Il a été remarqué que les calcaires remplissent les conditions du test Marshall sur les mélanges bitumineux et peuvent être utilisés de façon satisfaisante avec un pourcentage de bitume légèrement supérieur. Les abondants dépots de calcaires accessibles localement peuvent donc être utilisés.

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References

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  4. WALLACE, H.A. and MARTIN J.R. (1967): “Asphalt Pavement Engineering” McGraw Hill Co. U.S.A. pp. 64–82.

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Authors and Affiliations

  1. Department of Civil Engineering, University of Malaya, Kuala Lumpur, Malaysia

    Subbash C. Saxena

  2. University of Sulaimania, Sulaimania, Iraq

    Faris F. Khalid

Authors
  1. Subbash C. Saxena
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  2. Faris F. Khalid
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Saxena, S.C., Khalid, F.F. Study on Iraqi limestone aggregates in bituminous mixes. Bulletin of the International Association of Engineering Geology 30, 133–136 (1984). https://doi.org/10.1007/BF02594294

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  • DOI: https://doi.org/10.1007/BF02594294

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