Research Report 58 Substitution of bituminous roadbase for granular sub-base

Publication Year

1986

Document Status

Current

Abstract

Trials were carried out to investigate the strength of subgrade needed to allow rolled asphalt and dense coated macadam roadbases to be laid satisfactorily without a sub-base. Having established that a roadbase could be laid on a relatively weak foundation test pavements were constructed to enable the performance of conventional and full-depth pavements to be compared through the measurement of stress, strain and pavement deflection under load.

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