Influence of geological factors on soundness and abrasion resistance of road surface aggregates: A case study

  • Goswami S. C. 
International Symposium on Aggregates Theme IV Aggregates for Pavements


A study has been carried out on soudness and abrasion resistance of crushed-rock aggregates used in heavily trafficked road surfacings in Gauhati, a city situated in the State of Assam, India. The crushed-rock aggregates under study were obtained from Precambrian acid igneous rock outcrops in and around Gauhati. The grain, size and the volume of pore spaces were found to be the significant geological factors influencing soundness and abrasion resistance. The durability, in terms of resistance to weathering and resistance to wear, of the acid igneous rocks was found to increase with decrreasing grain size and decreasing volume of pore spaces.


Rock Type Pore Space Abrasion Resistance Percentage Weight Loss Geological Factor 

Influence des facteurs gologiques sur laqualite et la resistance a l'abrasion des granulats pour couches de surface des chaussees


Une étude a été entreprise sur la qualité et la résistance à l'abrasion des granulats concassés, utilisés pour les couches de surface de chaussées à trafic lourd à Gauhati (Assam).

Les granulats proviennent de roches éruptives acides précambriennes de la région de Gauhati. La dimension des grains et la porosité apparaissent comme des facteurs géologiques significatifs, influençant la qualité et la résistance à l'abrasion. La durabilité, dans le sens altérabilité et résistance à l'usure de ces roches, croit lorsque la dimension des grains et la porosité diminuent.


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  2. HARTLEY, A. (1974): A review of the geological factors influencing the mechanical properties of road surface aggregates.Q. JI. Engng. Geol., 7, 69–100.CrossRefGoogle Scholar
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Copyright information

© International Association of Engineering Geology 1984

Authors and Affiliations

  • Goswami S. C. 
    • 1
  1. 1.Department of Applied GeologyDibrugarh UniversityDibrugarhIndia

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