O’Connell, JohanMaina, JamesVdM Steyn, WJ2024-09-182024-09-182024-03O’Connell, Johan, Maina, J. & VdM Steyn, W. 2024. Short term ageing of asphalt binder in thin asphalt layers. <i>Construction and Building Materials, 418.</i> http://hdl.handle.net/10204/137630950-06181879-0526https://doi.org/10.1016/j.conbuildmat.2024.135386http://hdl.handle.net/10204/13763The effects of ageing on pavement performance are significant, particularly in terms of fatigue cracking. South Africa has the 10th longest road network in the world, requiring innovative approaches to road construction due to severe budget constraints. Innovative solutions such as thin asphalt concrete layers for surfacing, result in unique ageing rates of the layers, which, in general, have a higher incidence of fatigue cracking than, for example, thicker asphalt concrete layers used in other parts of the world. The objective of this paper is to evaluate how ageing mechanisms affect various asphalt binder properties, and whether they affect them to the same extent or not. Furthermore, the objective of the paper is also to determine the accuracy of the Rolling Thin Film Oven Test (RTFOT) in simulating short-term ageing in the field. The RTFOT provides a relatively good indication of short-term ageing, according to this multi-decade ageing study, and the effect on the asphalt binder properties used as ageing indices depends on the specific property chosen for comparison before and after ageing.AbstractenAsphalt cementBitumenRolling Thin Film Oven TestRTFOTArticleO’Connell, Johan, Maina, J., & VdM Steyn, W. (2024). Short term ageing of asphalt binder in thin asphalt layers. <i>Construction and Building Materials, 418</i>, http://hdl.handle.net/10204/13763O’Connell, Johan, James Maina, and WJ VdM Steyn "Short term ageing of asphalt binder in thin asphalt layers." <i>Construction and Building Materials, 418</i> (2024) http://hdl.handle.net/10204/13763O’Connell, Johan, Maina J, VdM Steyn W. Short term ageing of asphalt binder in thin asphalt layers. Construction and Building Materials, 418. 2024; http://hdl.handle.net/10204/13763.TY - Article AU - O’Connell, Johan AU - Maina, James AU - VdM Steyn, WJ AB - The effects of ageing on pavement performance are significant, particularly in terms of fatigue cracking. South Africa has the 10th longest road network in the world, requiring innovative approaches to road construction due to severe budget constraints. Innovative solutions such as thin asphalt concrete layers for surfacing, result in unique ageing rates of the layers, which, in general, have a higher incidence of fatigue cracking than, for example, thicker asphalt concrete layers used in other parts of the world. The objective of this paper is to evaluate how ageing mechanisms affect various asphalt binder properties, and whether they affect them to the same extent or not. Furthermore, the objective of the paper is also to determine the accuracy of the Rolling Thin Film Oven Test (RTFOT) in simulating short-term ageing in the field. The RTFOT provides a relatively good indication of short-term ageing, according to this multi-decade ageing study, and the effect on the asphalt binder properties used as ageing indices depends on the specific property chosen for comparison before and after ageing. DA - 2024-03 DB - ResearchSpace DP - CSIR J1 - Construction and Building Materials, 418 KW - Asphalt cement KW - Bitumen KW - Rolling Thin Film Oven Test KW - RTFOT LK - https://researchspace.csir.co.za PY - 2024 SM - 0950-0618 SM - 1879-0526 T1 - Short term ageing of asphalt binder in thin asphalt layers TI - Short term ageing of asphalt binder in thin asphalt layers UR - http://hdl.handle.net/10204/13763 ER -28181