Nine sections of road with sement-stabilised bases surfaced with multiple seals, and three sections with crushed rock bases and asphaltic concrete surfacings have been studied for seven years. These road sections are located in a dry area, on strong subgrade soils. It was found that the lightly constructed sections with cement-stabilised bases had suffered little structural damage after carryin…
This report gives results of measurements of the condition of unsealed roads made over a period of more than two years. The effects of the maintenance activities of grading and dragging on road surface conditions are assessed. During the study some of the running surfaces deteriorated sufficiently to significantly increase road user costs. Roughness was the aspect of running surface condition w…
Perlunya kajian untuk mengidentifikasi persoalan tingkat kinerja jalan terukur (kuantitatif) dari kondisi eksisting jalan, merupakan sumber penting sebagai tolok ukur informasi mengenai masalah lokasi yang paling serius dan menetapkannya sebagai urutan prioritas pengembangan dan rekomendasi untuk keperluan evaluasi, diagnosis, pengambilan keputusan dan pemberi peringatan. Analisa tingkat kinerj…
ARRB Proceedings - fourth Conference, volume 4 part 2
FERIC worked with a company in western Canada (Alpac) to complete the first phase of a study to assess the impact of road roughness on haul costs. The study's main objective was to find the right balance between minimizing costs and maximizing the efficiency of the transportation system. The potential benefits for the company were large, since according to Alpac, each reduction of 1 minute i…
Brazil presents some construction and maintenance problems in its road networks. One of these difficulties is the scarcity of granular materials permitted for the traditional specifications in the composition of the base layers of flexible pavements. When this type of material is available, its exploitation could also be problematic due to environmental constraints. Consequently, it is necess…