@phdthesis{10902/20147,
year = {2020},
month = {10},
url = {http://hdl.handle.net/10902/20147},
abstract = {RESUMEN: La mezcla asfáltica porosa se caracteriza por tener una alta porosidad permitiendo la descarga de agua a través de su estructura y suministrando múltiples beneficios en términos de la seguridad vial y el cuidado medioambiental. Sin embargo, su durabilidad es bastante baja en comparación con las mezclas asfálticas densas. Este estudio investigó el efecto de añadir fibras sintéticas en el comportamiento general de la mezcla PA utilizando una metodología innovadora que combina el concepto de diseño de experimentos (DOE) con el análisis de toma de decisiones de criterios múltiples (MCDM).  Entre los resultados más relevantes, las fibras de poliacrilontitrilo (PAN) y el conjunto de fibras de aramida y poliolefina (POA) incrementan la resistencia a la abrasión y esfuerzo a tracción, especialmente en condiciones secas. A la escala del mortero, se observaron mejoras significativas a bajas temperaturas añadiendo fibras PAN y POA. En relación con el innovador método DOE-MCDM propuesto, las mezclas fabricadas con betún modificado con polímeros mostraron las primeras posiciones en la clasificación de las alternativas. Sin embargo, también se pueden obtener resultados admisibles usando un betún convencional con la proporción adecuada de fibras. La integración de las técnicas DOE y el análisis MCDM puede considerarse una herramienta poderosa para la evaluación del impacto de diferentes variables de control en múltiples respuestas.},
abstract = {ABSTRACT: The porous asphalt (PA) mixture is characterized by having a large porosity allowing the discharge of water through its structure and providing multiple benefits in terms of road safety and environmental care. However, the durability is relatively lower in comparison to dense-graded asphalt mixtures. This study investigated the effect of adding synthetic fibers on the performance properties of PA mixtures employing an innovative methodology that combines the Design of Experiment (DOE) concept with the Multi-Criteria Decision-Making (MCDM) analysis. Among the most relevant results, polyacrylonitrile (PAN) and the set of polyolefin-aramid (POA) fibers increase the abrasion resistance, and tensile strength properties of PA mixture, especially in dry conditions.  At the mortar scale, significant improvements were noticed at low temperatures adding PAN and POA fibers. Concerning the novel DOE-MCDM method proposed, mixes manufactured with polymer-modified binder (PMB) showed the first positions in the preference ranking. Nevertheless, admissible results can also be obtained using a conventional binder as long as the proper proportions of fibers are applied. The integration of DoE techniques and MCDM analysis can be considered a powerful tool for the evaluation of the impact of different control variables on different responses.},
organization = {Finally, note that the accomplishment of this thesis has been possible thanks to the projects “Fostering the implementation of fiber-reinforced asphalt mixtures by ensuring its safe, optimized and cost-efficient use (FIBRA) funded by the CEDR Transnational Road Research Programme - call 2017 under the contract N. 867481 and the FORESEE project that has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 769373. Scientific support from the consortium partners of both projects is gratefully acknowledged.},
title = {Experimental evaluation of fiber-reinforced porous asphalt mixtures through the design of experiments integrated with multi-criteria decision-making analysis},
author = {Slebi Acevedo, Carlos José},
}