Degradation of aggregates in unbound pavement using geotextile interface / Ahmed Shukeri Embong

The work reported in this paper refers to a degradation study carried out in the laboratory, by using a Large Shear Box, in which different initial gradings of aggregates ( having high crushing strength ) was sheared with a sheet of geotextile acting as an interface. The geotextile used was a needle-punched nonwoven type supplied by Nylex ( DUPONT ) Malaysia. The aggregates were classified into three initial gradings namely, uniformly graded, well graded and gap graded. The tests were carried out conforming to BS 1377 : 1990. Three different normal loads at 20 KN, 40 KN, and 60 KN were employed during the shearing of the aggregates. The degree of degradation and angle of resistance between different gradings of aggregates were compared.