Road construction for better life INTRODUCTION: INTRODUCTION methods of constructing roads have changed a lot since the first roads were built around 4,000 BC – made of stone and timber . The first Roman roads were stone paved, built in North Africa and Europe for military The erations . Road construction techniques were gradually improved by the study of road traffic , stone thickness, road alignment, and slope gradients , developing to use stones that were laid in a regular, compact design , and covered with smaller stones to produce a solid layer . Modern roads tend to be constructed using asphalt and/or concrete . Very broadly, the construction of roads can be described by three processes: • Setting out . • Earthworks . • Paving construc...
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