dc.contributor.author |
O'Connell, Johannes S
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|
dc.contributor.author |
Maina, J
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|
dc.contributor.author |
Bredenhann, SJ
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|
dc.contributor.author |
Marais, H
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|
dc.contributor.author |
Komba, J
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|
dc.date.accessioned |
2024-09-18T06:51:44Z |
|
dc.date.available |
2024-09-18T06:51:44Z |
|
dc.date.issued |
2023-10 |
|
dc.identifier.citation |
O'Connell, J.S., Maina, J., Bredenhann, S., Marais, H. & Komba, J. 2023. Evaluating the efficacy of laboratory ageing of asphalt mix binders as a prediction for field ageing. http://hdl.handle.net/10204/13765 . |
en_ZA |
dc.identifier.uri |
http://hdl.handle.net/10204/13765
|
|
dc.description.abstract |
A Performance-grade Binder Specification (SATS 3208) for South Africa was finalised after CAPSA 2015 and launched at CAPSA 2019. A key feature of the performance-graded binder specification is the regulation of binder performance after long-term ageing, which is simulated in the laboratory using the pressure ageing vessel (PAV). This paper reports how this simulated long-term ageing relates to the ageing of binders in continuously-graded asphalt surfacing mixes in the field. Samples of asphalt surfacing mixes were obtained from ten sites in Gauteng, South Africa, which were constructed 5 to 30 years ago and selected based on the availability of the original binders. An ageing profile was developed for the original binders by characterising their rheology in the original state, after rolling thin film oven (RTFO) ageing and pressure ageing vessel (PAV) ageing after 20 hours, 40 hours and 80 hours. The ageing profiles were compared to the corresponding recovered binders. Rheological parameters used for comparison were Softening Point and Flexural Creep Stiffness / m-Value from the Bending Beam Rheometer (BBR) test. |
en_US |
dc.format |
Fulltext |
en_US |
dc.language.iso |
en |
en_US |
dc.source |
13th Conference on Asphalt Pavements for southern Africa (CAPSA), Champagne Sports Resort, Drakensberg, South Africa, 15-18 October 2023 |
en_US |
dc.subject |
Field ageing |
en_US |
dc.subject |
Flexural creep stiffness |
en_US |
dc.subject |
Pressure ageing vessel |
en_US |
dc.subject |
Rolling thin film oven |
en_US |
dc.subject |
Softening point |
en_US |
dc.title |
Evaluating the efficacy of laboratory ageing of asphalt mix binders as a prediction for field ageing |
en_US |
dc.type |
Conference Presentation |
en_US |
dc.description.pages |
16 |
en_US |
dc.description.note |
Paper presented at the 13th Conference on Asphalt Pavements for southern Africa (CAPSA), Champagne Sports Resort, Drakensberg, South Africa, 15-18 October 2023 |
en_US |
dc.description.cluster |
Smart Mobility |
en_US |
dc.description.impactarea |
Pavement Design and Construction |
en_US |
dc.identifier.apacitation |
O'Connell, J. S., Maina, J., Bredenhann, S., Marais, H., & Komba, J. (2023). Evaluating the efficacy of laboratory ageing of asphalt mix binders as a prediction for field ageing. http://hdl.handle.net/10204/13765 |
en_ZA |
dc.identifier.chicagocitation |
O'Connell, Johannes S, J Maina, SJ Bredenhann, H Marais, and J Komba. "Evaluating the efficacy of laboratory ageing of asphalt mix binders as a prediction for field ageing." <i>13th Conference on Asphalt Pavements for southern Africa (CAPSA), Champagne Sports Resort, Drakensberg, South Africa, 15-18 October 2023</i> (2023): http://hdl.handle.net/10204/13765 |
en_ZA |
dc.identifier.vancouvercitation |
O'Connell JS, Maina J, Bredenhann S, Marais H, Komba J, Evaluating the efficacy of laboratory ageing of asphalt mix binders as a prediction for field ageing; 2023. http://hdl.handle.net/10204/13765 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - O'Connell, Johannes S
AU - Maina, J
AU - Bredenhann, SJ
AU - Marais, H
AU - Komba, J
AB - A Performance-grade Binder Specification (SATS 3208) for South Africa was finalised after CAPSA 2015 and launched at CAPSA 2019. A key feature of the performance-graded binder specification is the regulation of binder performance after long-term ageing, which is simulated in the laboratory using the pressure ageing vessel (PAV). This paper reports how this simulated long-term ageing relates to the ageing of binders in continuously-graded asphalt surfacing mixes in the field. Samples of asphalt surfacing mixes were obtained from ten sites in Gauteng, South Africa, which were constructed 5 to 30 years ago and selected based on the availability of the original binders. An ageing profile was developed for the original binders by characterising their rheology in the original state, after rolling thin film oven (RTFO) ageing and pressure ageing vessel (PAV) ageing after 20 hours, 40 hours and 80 hours. The ageing profiles were compared to the corresponding recovered binders. Rheological parameters used for comparison were Softening Point and Flexural Creep Stiffness / m-Value from the Bending Beam Rheometer (BBR) test.
DA - 2023-10
DB - ResearchSpace
DP - CSIR
J1 - 13th Conference on Asphalt Pavements for southern Africa (CAPSA), Champagne Sports Resort, Drakensberg, South Africa, 15-18 October 2023
KW - Field ageing
KW - Flexural creep stiffness
KW - Pressure ageing vessel
KW - Rolling thin film oven
KW - Softening point
LK - https://researchspace.csir.co.za
PY - 2023
T1 - Evaluating the efficacy of laboratory ageing of asphalt mix binders as a prediction for field ageing
TI - Evaluating the efficacy of laboratory ageing of asphalt mix binders as a prediction for field ageing
UR - http://hdl.handle.net/10204/13765
ER -
|
en_ZA |
dc.identifier.worklist |
27378 |
en_US |