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A platform for research: civil engineering, architecture and urbanism
Laboratory investigation of crumb rubber in dense graded asphalt by wet and dry processes
Graphical abstract Display Omitted
Highlights High viscosity CR binder have vastly wider operating temperature range. It is possible to use ARwethv in dense-graded asphalt mixtures. ARwethv obtained significantly better fatigue and low-temperature properties than asphalts with conventional binders. ARwethv must be used together with WMA technology.
Abstract This article presents the perspective of the use of crumb rubber (CR) from the end-of-life tyres in dense-graded asphalt mixtures by the wet process high viscosity and a dry process in which the purpose of CR was to substitute aggregates. For the wet process CR modified binder was produced by adding 25% of rubber by the mass of the neat bitumen. Added CR content in the dry process was 41% by the mass of neat bitumen. The mixture made by dry process showed a weak internal cohesion and consequently poorer mechanical properties as reference mixtures. On the other hand, the mixture made by the wet process showed significantly better low-temperature and fatigue properties as reference mixtures.
Laboratory investigation of crumb rubber in dense graded asphalt by wet and dry processes
Graphical abstract Display Omitted
Highlights High viscosity CR binder have vastly wider operating temperature range. It is possible to use ARwethv in dense-graded asphalt mixtures. ARwethv obtained significantly better fatigue and low-temperature properties than asphalts with conventional binders. ARwethv must be used together with WMA technology.
Abstract This article presents the perspective of the use of crumb rubber (CR) from the end-of-life tyres in dense-graded asphalt mixtures by the wet process high viscosity and a dry process in which the purpose of CR was to substitute aggregates. For the wet process CR modified binder was produced by adding 25% of rubber by the mass of the neat bitumen. Added CR content in the dry process was 41% by the mass of neat bitumen. The mixture made by dry process showed a weak internal cohesion and consequently poorer mechanical properties as reference mixtures. On the other hand, the mixture made by the wet process showed significantly better low-temperature and fatigue properties as reference mixtures.
Laboratory investigation of crumb rubber in dense graded asphalt by wet and dry processes
Riekstins, Arturs (author) / Baumanis, Janis (author) / Barbars, Janis (author)
2021-04-21
Article (Journal)
Electronic Resource
English
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