In recent years, road construction and maintenance work has had to perform functional assignments whilst meeting important cost containment requirements. In this new environmentally aware context, great interest has been dedicated to research into alternative road materials. These are "environmentally sustainable" materials, obtained by recycling road pavement layers, industrial waste products and low quality local materials. This paper proposes the use of a new “frugal” approach to road pavement maintenance based on innovative techniques for pavement rehabilitation. The authors describe an in-situ full-width road pavement rehabilitation, which provided lime and cement stabilisation for the foundation and the recycling of existing asphalt layers with the bituminous emulsion and cement technique. Before choosing this type of maintenance, analysis focused not only on pavement defects in order to understand its causes, but also on the possibility of re-using and recycling the entire existing pavement. Specifically, the work was performed using fully environmentally friendly techniques for the provision of materials and waste disposal. Pre- and post-work analyses were carried out to assess the quality of work in relation to specifications. The results obtained after two years from opening also provided valuable indications for the development of new specifications and performance-related design procedures.

A new “Frugal” approach to road maintenance: 100% recycling of a deteriorated flexible pavement

SIMONE, ANDREA;VIGNALI, VALERIA;LANTIERI, CLAUDIO
2012

Abstract

In recent years, road construction and maintenance work has had to perform functional assignments whilst meeting important cost containment requirements. In this new environmentally aware context, great interest has been dedicated to research into alternative road materials. These are "environmentally sustainable" materials, obtained by recycling road pavement layers, industrial waste products and low quality local materials. This paper proposes the use of a new “frugal” approach to road pavement maintenance based on innovative techniques for pavement rehabilitation. The authors describe an in-situ full-width road pavement rehabilitation, which provided lime and cement stabilisation for the foundation and the recycling of existing asphalt layers with the bituminous emulsion and cement technique. Before choosing this type of maintenance, analysis focused not only on pavement defects in order to understand its causes, but also on the possibility of re-using and recycling the entire existing pavement. Specifically, the work was performed using fully environmentally friendly techniques for the provision of materials and waste disposal. Pre- and post-work analyses were carried out to assess the quality of work in relation to specifications. The results obtained after two years from opening also provided valuable indications for the development of new specifications and performance-related design procedures.
2012
Proceedings of 7th International conference on maintenance and rehabilitation of pavements and technological control
1
10
Simone A.; Vignali V.; Lantieri C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/130303
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