A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Epoxidized Benzyl Soyate Biopolymer Modified Asphalt Mixture
This study aimed to evaluate the impact of a new biopolymer, which includes epoxidized benzyl soyate (EBS), in a field experiment on the National Center for Asphalt Technology (NCAT) Test Track. For the study, the surface layer of Section W10 was milled and inlaid with a new asphalt mixture with an EBS bio-polymer binder in 2018. This section was compared to a control section (E5A) in the seventh and eighth research cycles (2018 through 2024). The surface layer of E5A was also paved with an asphalt mixture produced based on the same mix design, but it used a styrene-butadiene-styrene (SBS)-modified PG 76-22 binder. The test sections were monitored weekly for rutting, cracking, smoothness, and macrotexture under truck traffic. In addition, asphalt binders and plant mixtures were sampled during construction for a comprehensive laboratory evaluation to assist the field evaluation. Results indicated that the new biopolymer could be used by itself or with other modifiers to modify asphalt binders to achieve performance grades like conventional SBS-modified asphalt binders. The laboratory test results indicated that the mixture modified with biopolymer was less resistant to cracking and stiffer. However, the field performance revealed different results. After 20 million ESALs of trafficking, both test sections have shown good field performance thus far. Both sections exhibited good rutting with final rut depths below 5.0 mm. Low-severity cracking was observed in both sections, with 2.7% of the lane area in Section E5A and 3.4% of the lane area in Section W10.
Epoxidized Benzyl Soyate Biopolymer Modified Asphalt Mixture
This study aimed to evaluate the impact of a new biopolymer, which includes epoxidized benzyl soyate (EBS), in a field experiment on the National Center for Asphalt Technology (NCAT) Test Track. For the study, the surface layer of Section W10 was milled and inlaid with a new asphalt mixture with an EBS bio-polymer binder in 2018. This section was compared to a control section (E5A) in the seventh and eighth research cycles (2018 through 2024). The surface layer of E5A was also paved with an asphalt mixture produced based on the same mix design, but it used a styrene-butadiene-styrene (SBS)-modified PG 76-22 binder. The test sections were monitored weekly for rutting, cracking, smoothness, and macrotexture under truck traffic. In addition, asphalt binders and plant mixtures were sampled during construction for a comprehensive laboratory evaluation to assist the field evaluation. Results indicated that the new biopolymer could be used by itself or with other modifiers to modify asphalt binders to achieve performance grades like conventional SBS-modified asphalt binders. The laboratory test results indicated that the mixture modified with biopolymer was less resistant to cracking and stiffer. However, the field performance revealed different results. After 20 million ESALs of trafficking, both test sections have shown good field performance thus far. Both sections exhibited good rutting with final rut depths below 5.0 mm. Low-severity cracking was observed in both sections, with 2.7% of the lane area in Section E5A and 3.4% of the lane area in Section W10.
Epoxidized Benzyl Soyate Biopolymer Modified Asphalt Mixture
RILEM Bookseries
Vasconcelos, Kamilla (editor) / Jiménez del Barco Carrión, Ana (editor) / Chailleux, Emmanuel (editor) / Lo Presti, Davide (editor) / Moraes, Raquel (author) / Tran, Nam (author)
The International Workshop on the Use of Biomaterials in Pavements ; 2024 ; Sao Paolo, Brazil
2nd International Workshop on the Use of Biomaterials in Pavements ; Chapter: 27 ; 251-260
RILEM Bookseries ; 58
2024-09-20
10 pages
Article/Chapter (Book)
Electronic Resource
English
MODIFIED ASPHALT COMPOSITION AND MODIFIED ASPHALT MIXTURE
| European Patent Office | 2017