DEVELOPMENT OF LARGE STONE ASPHALT MIXTURES IN RIYADH | ||||
| ERJ. Engineering Research Journal | ||||
| Article 1, Volume 29, Issue 1, January 2006, Page 89-98 PDF (361.09 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2006.69818 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mahmoud El-Shourbagy1; Saad El-Hamrawy2 | ||||
| 1Faculty of Engineering. Mansoura University | ||||
| 2Faculty of Engineering- Minoufiya University | ||||
| Abstract | ||||
| Premature rutting of heavy duty asphalt pavements has been increasingly experienced in recent years primarily due to high pressure truck tires and increased wheel loads. Many asphalt technologists believe that the use of large size stone (maximum size of more than one inch) in the binder and base courses will minimize or eliminate the rutting of heavy duty pavements. This research describes a development of new asphalt mix design procedure which is a better indicator of road performance in Riyadh. The Marshall method has served well over the years but as wheel loads and tire pressures increase, and as temperature is high, there was a need for an update of mix design procedures. This new method allowed the incorporation of aggregate size larger than 25mm, and the use of vibratory compaction apparatus with 6.0 inch mould size diameter. Results from the mix design study indicated that when compared to the conventional mix characteristics, the introduction of larger stone to the asphalt mixture improves its properties considerably. | ||||
| Keywords | ||||
| Marshall mix Design; Large Stone; Vibration; Indirect Tensile Strength; and Fatigue Prediction | ||||
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