Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Field Evaluation of High Level Roads with Foamed Bitumen Stabilized Base Layers
High traffic volume roads present a challenge for maintenance and rehabilitation as lane interdictions are required, but also undesirable. Closing lanes for pavement rehabilitation impacts not only highway capacity, but also the road network operation, along with the user safety. To minimize these effects, applications involving foamed bitumen stabilized layers have been growing in use for the last decade in Brazil, especially because of the possibility of providing adequate rehabilitation to deteriorated pavements within a reduced time frame. This paper presents the results of the monitoring of three different sections for two high traffic volume roads in Brazil, where foam stabilization was used as the rehabilitation solution. For each of these sections, the stabilized layers were composed of different types of aggregate, ranging from reclaimed asphalt pavement, to well graded crushed stone, and crushed cement treated base. The results obtained during up to five years of pavement monitoring include series of FWD testing, backcalculation results, material characterization (mix composition, binder and active filler contents, triaxial resilient modulus tests), and pavement functional and structural performance analysis. The results obtained show that foam stabilized layers can be used as efficient solution for high level roads, minimizing lane interdiction periods while maintaining a proper structural and functional performance.
Field Evaluation of High Level Roads with Foamed Bitumen Stabilized Base Layers
High traffic volume roads present a challenge for maintenance and rehabilitation as lane interdictions are required, but also undesirable. Closing lanes for pavement rehabilitation impacts not only highway capacity, but also the road network operation, along with the user safety. To minimize these effects, applications involving foamed bitumen stabilized layers have been growing in use for the last decade in Brazil, especially because of the possibility of providing adequate rehabilitation to deteriorated pavements within a reduced time frame. This paper presents the results of the monitoring of three different sections for two high traffic volume roads in Brazil, where foam stabilization was used as the rehabilitation solution. For each of these sections, the stabilized layers were composed of different types of aggregate, ranging from reclaimed asphalt pavement, to well graded crushed stone, and crushed cement treated base. The results obtained during up to five years of pavement monitoring include series of FWD testing, backcalculation results, material characterization (mix composition, binder and active filler contents, triaxial resilient modulus tests), and pavement functional and structural performance analysis. The results obtained show that foam stabilized layers can be used as efficient solution for high level roads, minimizing lane interdiction periods while maintaining a proper structural and functional performance.
Field Evaluation of High Level Roads with Foamed Bitumen Stabilized Base Layers
Guatimosim, F. V. (Autor:in) / Vasconcelos, K. (Autor:in) / Kuchiishi, A. K. (Autor:in) / Bernucci, L. L. B. (Autor:in)
International Airfield and Highway Pavements Conference 2019 ; 2019 ; Chicago, Illinois
Airfield and Highway Pavements 2019 ; 549-559
18.07.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Design of pavements containing foamed bitumen recycled layers
| British Library Conference Proceedings | 2009