Evaluating both Mechanical and Hydraulic Performance of the Porous Asphalt

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Hekmatfar, Ali | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 42043 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Tabatabaee, Nader
Abstract:
Porous Asphalt or Porous Friction Courses (PFCs) are mainly recommended as surface drainage layers on rainy runway pavements and roads with medium traffic. Characteristic features of porous asphalt mixes are improved permeability, skid resistance and sound attenuation. The purpose of this research is to evaluate the effect of mixture parameters such as binder content, amount of modifier and aggregate gradation on the performance and durability of the porous mixtures. In this research ground tire rubber was used as the modifier. Mechanical properties of these mixes were assessed by determining stone-on-stone condition, Marshall stability, unaged abrasion loss, and aged abrasion loss tests. Hydraulic performance of these mixtures was evaluated by conducting permeability and moisture susceptibility tests. The findings show that the parameters such as binder content and aggregate gradation control mechanical and hydraulic properties and amount of modifier controls hydraulic performance
Keywords:
Permeability ; Cantabrian Test ; Porous Asphalt ; Porous Friction Courses (PFC)

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