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Slurry seal texture as affected by aggregate gradation

Influence de la granularite des granulats sur la rugosite des enrobes d'entretien

  • 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

Although slurry seal has been used since the 1950s, consistently successful application has been difficult in achieving both durable and skid-resistant slurry seal. This paper presents the results of a study dealing with the effects of aggregate gradation on the surface texture which directly affects the skid-resistance of a slurry seal.

Studies of surface texture characteristics conducted on three series of 47 slurry seal mixes showed that there is a critical asphalt content corresponding to 5.5 to 6.5 μm film thickness and that the macrotexture is strongly affected by the difference between the maximum aggregate size and the slurry thickness.

Résumé

Bien qu'utilisés depuis 1950, les enrobés d'entretien en couche mince posent des problèmes à la mise en œuvre et pour obtenir un bon comportement et une bonne résistance au dérapage.

Ce travail présente les résultats obtenus sur l'influence de la granularité sur la rugosité de surface du produit.

Pour tester ces textures de surface, 47 formules ont été étudiées et ont montré qu'il y a une teneur en bitume optimale correspondant à un film de 5,5 à 6,5 μm d'épaisseur et que la macrorugosité est fortement influencée par la différence entre la dimension des plus gros gravillons et l'épaisseur du revêtement.

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References

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Lee, D.Y., Orhan, O. Slurry seal texture as affected by aggregate gradation. Bulletin of the International Association of Engineering Geology 30, 89–92 (1984). https://doi.org/10.1007/BF02594285

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  • DOI: https://doi.org/10.1007/BF02594285

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