Search for dissertations about: "road maintenance"

Showing result 21 - 25 of 115 swedish dissertations containing the words road maintenance.

  2. 21. Deterioration Models and Road Capital as Tools in Performance Contracts for Pavement Maintenance

    Author : Peter Ekdahl; Trafik och väg; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknik; pavement management system; performance contract; pavement maintenance; deterioration model; Technological sciences; road capital; Social sciences; Samhällsvetenskaper;

    Abstract : A reorganization of the Swedish National Road Administration (SNRA) has urged a demand to work as a professional agency only, without any work by direct labor. This structure has enforced a change in how to handle the pavement maintenance and performance contracts are being promoted since they encourage product development and sustainability. READ MORE

  4. 22. A Bayesian approach to retrospective detection of change-points in road surface measurements

    Author : Fridtjof Thomas; Urban Hjort; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Change-point detection; retrospective view; autoregressive processes; minimal imaginary training sample; road surface measurements; international roughness index; rutting; Laser-RST vehicles; road maintenance; pavement management; statistik; Statistics;

    Abstract : First-order autoregressive processes are analysed for sudden changes in parameter value. In its most general form, a multivariate vector of measurements is allowed, and no prior knowledge about the involved parameters is required. READ MORE

  5. 23. Performance Measures of Road Infrastructures

    Author : Babak Ebrahimi; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LCCA; LCA; road infrastructure; SLR; survival analysis; modelling; lifetime; GIS;

    Abstract : Roads are transport infrastructures that play a fundamental role in the development of societies and businesses. They are valuable assets, as they connect places, provide mobility, create jobs and stimulate economic prosperity. READ MORE

  6. 24. Evaluation of Dust Suppressants for Gravel Roads: Methods Development and Efficiency Studies

    Author : Karin Oscarsson; Högskolan Dalarna; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gravel road; dust; particulate matter; PM10; horizontal dust diffusion; deteriorations; maintenance; dust control; dust suppressants; efficiency; application rate; leaching; residual concentration; seasonal variations; salt solution; solid salt; calcium chloride; magnesium chloride; lignosulphonate; polysaccharide sugar ; bitumen emulsion; rape oil; starch; surfactant; mesa; clay; fine material content.; Complex Systems – Microdata Analysis; Komplexa system - mikrodataanalys;

    Abstract : Application of the proper dust suppressant to a gravel road ensures road safety and riding comfort as well as creating a cleaner and healthier environment for residents in buildings adjacent to the road. It also reduces the need and cost for vehicle repair, road maintenance activities, and aggregate supplementation. READ MORE

  7. 25. Evaluation of Dust Suppressants for Gravel Roads : Methods Development and Efficiency Studies

    Author : Karin Edvardsson; Björn Birgisson; Andrew Dawson; KTH; []
    Keywords : Gravel road; dust; particulate matter; PM10; horizontal dust diffusion; deteriorations; maintenance; dust control; dust suppressants; efficiency; application rate; leaching; residual concentration; seasonal variations; salt solution; solid salt; calcium chloride; magnesium chloride; lignosulphonate; polysaccharide sugar ; bitumen emulsion; rape oil; starch; surfactant; mesa; clay; fine material content;

    Abstract : Approximately 75 percent (300 000 km) of the total Swedish road network and 20 percent(20 000 km) of the national road network consists of gravel roads. One of the most significantproblems associated with gravel roads is traffic-generated dust emission, which contributes tothe deterioration of the road surface and acts as a major source of particulate matter releasedinto the atmosphere, thereby involving public economics, road safety, human health, andenvironmental quality. READ MORE