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Abstract
The specimen used for pavement bond strength testing may be in field scale or laboratory scale. Field specimen is obtained from coring activity, whereas laboratory specimen is laboratory fabricated. This work focused on to investigate the properties of single-face-compacted asphalt specimen using Marshall compactor at different compacting efforts under three thicknesses (35, 50, 65 mm). Test mixtures include Malaysian dense-graded asphaltic concrete AC10 and gap-graded stone mastic asphalt SMA14 of nominal maximum aggregate size 10 and 14 mm respectively. Marshall properties and volumetric properties were determined. The results indicate that at optimum compaction effort, both Marshall and volumetric properties fulfil the requirement specified by Public Works Department Malaysia, except Marshall flow for AC10 and SMA14 at 35 mm thick. This may be accounted to the specimen thickness itself which failed relatively fast upon loaded, owing to the over concentrated stress exerted over limited contact surface area. High R2 value also indicates the strong correlation between single-face-compacting effort and the tested properties.
Acknowledgements
The authors are indeed grateful to the Ministry of Higher Education (MOHE) for the fundamental Research Grant Scheme (FRGS Vote 4F201) and the Universiti Teknologi Malaysia Research University grant (GUP Tier 2 Vote 06J52) for the financial support in this research project. The authors also acknowledge the continuous assistance and support given by the laboratory technicians in completing this work. Special thanks also dedicated to the anonymous reviewers who review and provide valuable comments and information in producing a quality piece of work.