Evaluation of durability tests for permeable friction course mixtures
2009; Taylor & Francis; Volume: 11; Issue: 1 Linguagem: Inglês
10.1080/10298430902730539
ISSN1477-268X
AutoresAllex E. Álvarez, Amy Epps-Martin, Cindy Estakhri, Richard Izzo,
Tópico(s)Transport Systems and Technology
ResumoAbstract Durability of porous or permeable friction courses (PFC) is an important aspect to address when designing this type of hot mix asphalt. At present, several agencies perform the mix design of PFC primarily by determining volumetric mixture properties. This approach ensures adequate mixture functionality, but it does not guarantee mixture durability. This paper evaluates the Cantabro loss test, the Hamburg Wheel-Tracking test (HWTT) and the Overlay test (OT) to determine the one most appropriate for mix design and laboratory performance evaluations. The Cantabro loss test, performed in both dry and wet conditions, is recommended for PFC mix design to corroborate the suitability of the optimum asphalt content defined based on volumetric determinations. The HWTT and the OT are not recommended, since the variability of the test results indicated that these tests may not be suitable for PFC mixtures. Keywords: porous friction courseopen-graded friction coursedurabilitymix designCantabro test Acknowledgements This study was conducted for the TxDOT, and the authors thank TxDOT and the Federal Highway Administration for their support in funding this research study. Special thanks are also due to all TTI personnel who helped in fabricating laboratory specimens, conducting laboratory tests and analysing data. The various TxDOT district offices that provided materials and technical support are also thanked. The first author, Associate Professor of the University of Magdalena (Colombia), also expresses special thanks to the University of Magdalena and COLCIENCIAS (Colombia) for sponsorship of his graduate studies at Texas A&M University. Notes 1. a-eppsmartin@tamu.edu 2. c-estakhri@tamu.edu 3. rizzo@dot.state.tx.us Additional informationNotes on contributorsAmy Epps-Martin 1. 1. a-eppsmartin@tamu.edu Cindy Estakhri 2. 2. c-estakhri@tamu.edu Richard Izzo 3. 3. rizzo@dot.state.tx.us
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