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Mechanical Properties of Bitumen and Asphalt Mixture Modified with Polymer Additives
https://orcid.org/https://orcid.org/0000-0001-5318-0381
This paper presents an investigation into the mechanical properties of bitumen and asphalt mixture modified with polymer additives. Two polymer additives used in the study are SBS (Styrene-Butadiene-Styrene) and EVA (Ethylene-Vinyl Acetate). Penetration test, softening point test and elastic recovery test were performed on the base bitumen and the SBS polymer modified bitumen with different additive contents. In addition, the complex modulus tests were conducted in order to characterize the linear viscoelastic behaviour of the base bitumen, SBS polymer modified bitumen and the EVA modified asphalt mixture. The experimental results showed that the polymer modification improved the hardness and the elastic recovery of bitumen. The extent of the improvements varied as a function of polymer content. The changes in the complex modulus (both norm and phase angle) of polymer modified bitumen and asphalt mixture were observed. The Time Temperature Superposition Principle (TTSP) was shown to be applicable for the complex modulus of the base bitumen. But the polymer modified bitumen and asphalt mixture respected only the Partial Time-Temperature Superposition Principle (PTTSP). The PTTSP was also verified for the complex Poisson’s ratio of an EVA modified asphalt mixture. Despite the changes in the rheological properties, the shift factors used to build the complex modulus master curves of both original and polymer modified bitumen were very similar.
Mechanical Properties of Bitumen and Asphalt Mixture Modified with Polymer Additives
https://orcid.org/https://orcid.org/0000-0001-5318-0381
This paper presents an investigation into the mechanical properties of bitumen and asphalt mixture modified with polymer additives. Two polymer additives used in the study are SBS (Styrene-Butadiene-Styrene) and EVA (Ethylene-Vinyl Acetate). Penetration test, softening point test and elastic recovery test were performed on the base bitumen and the SBS polymer modified bitumen with different additive contents. In addition, the complex modulus tests were conducted in order to characterize the linear viscoelastic behaviour of the base bitumen, SBS polymer modified bitumen and the EVA modified asphalt mixture. The experimental results showed that the polymer modification improved the hardness and the elastic recovery of bitumen. The extent of the improvements varied as a function of polymer content. The changes in the complex modulus (both norm and phase angle) of polymer modified bitumen and asphalt mixture were observed. The Time Temperature Superposition Principle (TTSP) was shown to be applicable for the complex modulus of the base bitumen. But the polymer modified bitumen and asphalt mixture respected only the Partial Time-Temperature Superposition Principle (PTTSP). The PTTSP was also verified for the complex Poisson’s ratio of an EVA modified asphalt mixture. Despite the changes in the rheological properties, the shift factors used to build the complex modulus master curves of both original and polymer modified bitumen were very similar.
Mechanical Properties of Bitumen and Asphalt Mixture Modified with Polymer Additives
https://orcid.org/https://orcid.org/0000-0001-5318-0381
This paper presents an investigation into the mechanical properties of bitumen and asphalt mixture modified with polymer additives. Two polymer additives used in the study are SBS (Styrene-Butadiene-Styrene) and EVA (Ethylene-Vinyl Acetate). Penetration test, softening point test and elastic recovery test were performed on the base bitumen and the SBS polymer modified bitumen with different additive contents. In addition, the complex modulus tests were conducted in order to characterize the linear viscoelastic behaviour of the base bitumen, SBS polymer modified bitumen and the EVA modified asphalt mixture. The experimental results showed that the polymer modification improved the hardness and the elastic recovery of bitumen. The extent of the improvements varied as a function of polymer content. The changes in the complex modulus (both norm and phase angle) of polymer modified bitumen and asphalt mixture were observed. The Time Temperature Superposition Principle (TTSP) was shown to be applicable for the complex modulus of the base bitumen. But the polymer modified bitumen and asphalt mixture respected only the Partial Time-Temperature Superposition Principle (PTTSP). The PTTSP was also verified for the complex Poisson’s ratio of an EVA modified asphalt mixture. Despite the changes in the rheological properties, the shift factors used to build the complex modulus master curves of both original and polymer modified bitumen were very similar.
Mechanical Properties of Bitumen and Asphalt Mixture Modified with Polymer Additives
RILEM Bookseries
Di Benedetto, Hervé (Herausgeber:in) / Baaj, Hassan (Herausgeber:in) / Chailleux, Emmanuel (Herausgeber:in) / Tebaldi, Gabriele (Herausgeber:in) / Sauzéat, Cédric (Herausgeber:in) / Mangiafico, Salvatore (Herausgeber:in) / Nguyen, Quang Tuan (Autor:in) / Hoang, Thi Thanh Nhan (Autor:in) / Bui, Xuan Cay (Autor:in) / La, Van Cham (Autor:in)
RILEM International Symposium on Bituminous Materials ; 2020 ; Lyon, France
Proceedings of the RILEM International Symposium on Bituminous Materials ; Kapitel: 168 ; 1321-1326
RILEM Bookseries ; 27
26.09.2021
6 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
MODIFIED BY THE PETROLEUM BITUMEN ASPHALT-CONCRETE MIXTURE AND THE BITUMEN MODIFIER
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