Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional de Colombia
2016
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=64348899005 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- The mechanical behavior of two warm-mix asphalts H. A. Rondón-Quintana M. S. Ocampo-Terreros H. A. Vacca-Gámez F. A. Reyes-Lizcano J. P. Nieto-Mora D. P. Beltrán-Cruz Ingeniería Hot warm mix asphalt induced damage resistance to aging This paper presents results stemming from a comparative experimental analysis of two warm-mix asphalts (WMA) and a dense-graded hot-mix asphalt (HMA). In order to evaluate asphalt mixture behavior, physical and rheological tests were conducted, including tests on resilient modulus, resistance to moisture-induced damage, resistance to fatigue and resistance to permanent deformation. Samples studied were subjected to short (STOA) and long-term (LTOA) aging. As far as asphalt mixture composition is concerned, the same particle size distribution and coarse aggregate were employed for both mixture types. The control HMA mixture was produced with AC 60-70, and the WMAs used the same asphalt cement modified with two chemical additives (Rediset WMX® and Cecabase RT®). The modified mixtures exhibited better resistance to permanent deformation, aging and moisture-induced damage (versus the control mixture). Likewise, WMAs generally saw increased fatigue resistance under controlled-stress loading, which rheological characterization showed is mainly attributable to binder additives and their concomitant modifications. 2016 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64348899005 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.3 Vol.36