dc.contributor.author |
Denneman, E
|
|
dc.contributor.author |
Verhaeghe, Benoit MJA
|
|
dc.contributor.author |
Sadzik, ES
|
|
dc.date.accessioned |
2007-07-23T10:22:14Z |
|
dc.date.available |
2007-07-23T10:22:14Z |
|
dc.date.issued |
2007-07 |
|
dc.identifier.citation |
Denneman, E, Verhaeghe, BMJA and Sadzik, ES.2007. Aggregate packing characteristics of good and poor performing asphalt mixes. The Challenges of implementing policy. 26th Annual Southern African Transport Conference and Exhibition, Pretoria, South Africa, 9 - 12 July 2007, pp 213-224 |
en |
dc.identifier.uri |
http://hdl.handle.net/10204/1018
|
|
dc.description.abstract |
The aggregate structure of the compacted mix is a determining factor for the performance of Hot-Mix Asphalt (HMA). In this paper, the grading characteristics of good and poor performing HMA mixes are explored using the concepts of the Bailey method and related techniques for determining the porosity of the Dominant Aggregate Size Range (DASR) and the permeability characteristics of the mix. The aim is to assess the potential benefits of these new gradation analysis techniques for HMA performance in South Africa. The
aggregate gradation of past mix designs, for which the field performance is known, are analysed and discussed in the paper. Typical properties of the aggregate structures of good and poor performing medium continuously graded asphalt (ACM) mixes are identified. The primary differences between the grading of the studied good and poor performing mixes lie in the grading of the coarser aggregate. While the poor performing mixes are coarser according to the classical definition, the good performers have a more
voluminous DASR. The paper concludes that the grading analysis concepts allow the design engineer new insights into the structure of aggregates. The principles can be used to develop more specific guidelines for aggregate structure selection. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Proceedings of the 26th Southern African Transport Conference 2007 |
en |
dc.subject |
Hot mix asphalt |
en |
dc.subject |
Continuously graded asphalt |
en |
dc.subject |
Dominant aggregate size range |
en |
dc.subject |
Southern African Transport Conference |
en |
dc.subject |
SATC |
en |
dc.title |
Aggregate packing characteristics of good and poor performing asphalt mixes |
en |
dc.type |
Conference Presentation |
en |
dc.identifier.apacitation |
Denneman, E., Verhaeghe, B. M., & Sadzik, E. (2007). Aggregate packing characteristics of good and poor performing asphalt mixes. Proceedings of the 26th Southern African Transport Conference 2007. http://hdl.handle.net/10204/1018 |
en_ZA |
dc.identifier.chicagocitation |
Denneman, E, Benoit MJA Verhaeghe, and ES Sadzik. "Aggregate packing characteristics of good and poor performing asphalt mixes." (2007): http://hdl.handle.net/10204/1018 |
en_ZA |
dc.identifier.vancouvercitation |
Denneman E, Verhaeghe BM, Sadzik E, Aggregate packing characteristics of good and poor performing asphalt mixes; Proceedings of the 26th Southern African Transport Conference 2007; 2007. http://hdl.handle.net/10204/1018 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Denneman, E
AU - Verhaeghe, Benoit MJA
AU - Sadzik, ES
AB - The aggregate structure of the compacted mix is a determining factor for the performance of Hot-Mix Asphalt (HMA). In this paper, the grading characteristics of good and poor performing HMA mixes are explored using the concepts of the Bailey method and related techniques for determining the porosity of the Dominant Aggregate Size Range (DASR) and the permeability characteristics of the mix. The aim is to assess the potential benefits of these new gradation analysis techniques for HMA performance in South Africa. The
aggregate gradation of past mix designs, for which the field performance is known, are analysed and discussed in the paper. Typical properties of the aggregate structures of good and poor performing medium continuously graded asphalt (ACM) mixes are identified. The primary differences between the grading of the studied good and poor performing mixes lie in the grading of the coarser aggregate. While the poor performing mixes are coarser according to the classical definition, the good performers have a more
voluminous DASR. The paper concludes that the grading analysis concepts allow the design engineer new insights into the structure of aggregates. The principles can be used to develop more specific guidelines for aggregate structure selection.
DA - 2007-07
DB - ResearchSpace
DP - CSIR
KW - Hot mix asphalt
KW - Continuously graded asphalt
KW - Dominant aggregate size range
KW - Southern African Transport Conference
KW - SATC
LK - https://researchspace.csir.co.za
PY - 2007
T1 - Aggregate packing characteristics of good and poor performing asphalt mixes
TI - Aggregate packing characteristics of good and poor performing asphalt mixes
UR - http://hdl.handle.net/10204/1018
ER -
|
en_ZA |