A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large Scale Characterization of Crumb Rubber Modified Asphalt Mixtures Using Dry Process
In Switzerland, every year tons of waste tyres are produced and transported mostly to the cement industry for incineration or exported for further processing. The cement industry receives this waste material (whole tyres) and charges a fee to tyre collectors whereas in many other countries the cement factory pays for the tyres. Waste tyres are a significant global problem. At the same time waste tyres are a source of useful raw materials that are in the country and could be used to enhance the performance of road pavements. It has been shown that crumb rubber from tyres can be used in asphalt concrete as a performance enhancing additive. Many countries mandate its use as an important waste reduction measure. The primary barrier for its use is lack of knowledge by the practicing engineers, as the use of CR requires additional steps in the preparation method. In this paper, we demonstrate that using the dry process it is possible to achieve the required performance. Semi-dense and dense asphalt mixtures modified with crumb rubber were produced in two different asphalt plants. The overall objective of this paper is evaluating selected plant produced mixtures, but in a controlled quasi-laboratory environment, focusing on their mechanical response. A number of compacted slabs in meter scale replicating surface and base layers are loaded with the MMLS3 (simulating traffic loads). The influence of CR on the rutting behaviour was analysed and compared with conventional asphalt mixtures.
Large Scale Characterization of Crumb Rubber Modified Asphalt Mixtures Using Dry Process
In Switzerland, every year tons of waste tyres are produced and transported mostly to the cement industry for incineration or exported for further processing. The cement industry receives this waste material (whole tyres) and charges a fee to tyre collectors whereas in many other countries the cement factory pays for the tyres. Waste tyres are a significant global problem. At the same time waste tyres are a source of useful raw materials that are in the country and could be used to enhance the performance of road pavements. It has been shown that crumb rubber from tyres can be used in asphalt concrete as a performance enhancing additive. Many countries mandate its use as an important waste reduction measure. The primary barrier for its use is lack of knowledge by the practicing engineers, as the use of CR requires additional steps in the preparation method. In this paper, we demonstrate that using the dry process it is possible to achieve the required performance. Semi-dense and dense asphalt mixtures modified with crumb rubber were produced in two different asphalt plants. The overall objective of this paper is evaluating selected plant produced mixtures, but in a controlled quasi-laboratory environment, focusing on their mechanical response. A number of compacted slabs in meter scale replicating surface and base layers are loaded with the MMLS3 (simulating traffic loads). The influence of CR on the rutting behaviour was analysed and compared with conventional asphalt mixtures.
Large Scale Characterization of Crumb Rubber Modified Asphalt Mixtures Using Dry Process
RILEM Bookseries
Di Benedetto, Hervé (editor) / Baaj, Hassan (editor) / Chailleux, Emmanuel (editor) / Tebaldi, Gabriele (editor) / Sauzéat, Cédric (editor) / Mangiafico, Salvatore (editor) / Bueno, Moises (author) / Poulikakos, Lily (author)
RILEM International Symposium on Bituminous Materials ; 2020 ; Lyon, France
Proceedings of the RILEM International Symposium on Bituminous Materials ; Chapter: 161 ; 1265-1272
RILEM Bookseries ; 27
2021-09-26
8 pages
Article/Chapter (Book)
Electronic Resource
English
FRACTURE CHARACTERISTICS OF CRUMB RUBBER MODIFIED ASPHALT MIXTURES
| British Library Conference Proceedings | 2004
MECHANICAL PROPERTIES OF CRUMB RUBBER MODIFIED ASPHALT MIXTURES
| British Library Conference Proceedings | 2004