As many of the developing countries Ethiopian's road network is mostly gravel. It comprises 82.7% of the road network. Road users and residences around these roads highly exposed to the dust generated due to traffic. In the past years so many techniques of dust reduction has been applied, starting from application of water to using chemical adhesives. In this work an alternative option for dust reduction is presented. Sub base materials from Gelan-Insilale-Legedadi DS6 road section and tear off asphalt pavement from Kality-Akaki road were bagged, tagged & transferred to laboratory. In laboratory in order to determine the engineering property ASTM & AASHTO standards were used. Precipitation Data from Ethiopian National Meteorology Agency, traffic count, vehicle classification of federal highway administration and laboratory test results of silt content & particle size multiplier K-value were used for adopting EPA3 dust quantification model & fugitive dust handbook equation. MINI-TAB17& Excel
analyses were used to analyze the data. The result shows blending the 70% sub base with 30% RAP the dust emission was reduced by 17%. The method was also found to be both ecological & economical.
Inhaltsverzeichnis (Table of Contents)
- Introduction
- Problem statement
- Research objective
- Research question
- Scope
- Limitation of the study
- Materials and Methodology
- Materials
- Methods
Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)
This research aims to investigate the effectiveness of using recycled asphalt pavement (RAP) in gravel roads to reduce dust generated by traffic. The study focuses on a specific road section in Ethiopia and evaluates the impact of adding RAP to gravel roads on dust emission levels.
- Dust reduction in gravel roads
- Recycled asphalt pavement application
- Traffic-generated dust quantification
- Engineering properties of road materials
- Ecological and economic benefits
Zusammenfassung der Kapitel (Chapter Summaries)
The first chapter introduces the research problem, highlighting the significant issue of dust generation from gravel roads in Ethiopia. The chapter outlines the research objective, question, scope, and limitations of the study.
Chapter two delves into the materials and methods used in the research. It describes the sources of the materials, including the reclaimed asphalt pavement and the sub-base materials, as well as the methods employed for testing their engineering properties. The chapter also explains the process of data collection, including traffic count, vehicle weight, and meteorological data. Finally, it presents the dust quantification model used in the study.
Schlüsselwörter (Keywords)
The study revolves around key concepts such as dust reduction, recycled asphalt pavement, gravel roads, dust quantification, engineering properties, and traffic impact. It also involves the use of the EPA model, dust emission factors, and vehicle classification.
- Citation du texte
- Genet Hailu (Auteur), 2017, Adding Recycled Asphalt Pavements in Gravel Roads to Control Traffic Generated Dust, Munich, GRIN Verlag, https://www.grin.com/document/1266782