A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Green Roads Ahead: Integrating Gum Arabic in Tunisian Asphalt Formulas
https://orcid.org/http://orcid.org/0000-0003-2259-1801
This study introduces Gum Arabic (GA), a natural polysaccharide, as an innovative bio-modifier for AP-5 asphalt cement, marking a step toward sustainable civil engineering materials. We investigated the effects of GA at varying concentrations (e.g., 5, 10, and 15 wt.%) using advanced analytical techniques such as Fourier-transform infrared spectroscopy (FT-IR), thin-layer chromatography-flame ionization detection (TLC-FID), and scanning electron microscopy (SEM). FT-IR analysis revealed GA's interaction with asphalt as primarily physical, suggesting its role as a stabilizing agent. TLC-FID results indicated a chemical shift in the asphalt composition, with a notable increase in saturates and resins and a decrease in aromatics, enhancing the asphalt’s thermodynamic stability. SEM analysis demonstrated excellent miscibility of GA with the asphalt binder, crucial for consistent material performance. Rheological tests revealed changes in the mechanical properties of the asphalt, including reduced penetration and ductility but increased softening point and viscosity. Dynamic shear rheometer (DSR) testing indicated improved rutting resistance, enhancing the asphalt's high-temperature performance. Our findings suggest that GA is an effective, environmentally friendly additive, offering significant improvements in asphalt mixture performance.
Green Roads Ahead: Integrating Gum Arabic in Tunisian Asphalt Formulas
https://orcid.org/http://orcid.org/0000-0003-2259-1801
This study introduces Gum Arabic (GA), a natural polysaccharide, as an innovative bio-modifier for AP-5 asphalt cement, marking a step toward sustainable civil engineering materials. We investigated the effects of GA at varying concentrations (e.g., 5, 10, and 15 wt.%) using advanced analytical techniques such as Fourier-transform infrared spectroscopy (FT-IR), thin-layer chromatography-flame ionization detection (TLC-FID), and scanning electron microscopy (SEM). FT-IR analysis revealed GA's interaction with asphalt as primarily physical, suggesting its role as a stabilizing agent. TLC-FID results indicated a chemical shift in the asphalt composition, with a notable increase in saturates and resins and a decrease in aromatics, enhancing the asphalt’s thermodynamic stability. SEM analysis demonstrated excellent miscibility of GA with the asphalt binder, crucial for consistent material performance. Rheological tests revealed changes in the mechanical properties of the asphalt, including reduced penetration and ductility but increased softening point and viscosity. Dynamic shear rheometer (DSR) testing indicated improved rutting resistance, enhancing the asphalt's high-temperature performance. Our findings suggest that GA is an effective, environmentally friendly additive, offering significant improvements in asphalt mixture performance.
Green Roads Ahead: Integrating Gum Arabic in Tunisian Asphalt Formulas
https://orcid.org/http://orcid.org/0000-0003-2259-1801
This study introduces Gum Arabic (GA), a natural polysaccharide, as an innovative bio-modifier for AP-5 asphalt cement, marking a step toward sustainable civil engineering materials. We investigated the effects of GA at varying concentrations (e.g., 5, 10, and 15 wt.%) using advanced analytical techniques such as Fourier-transform infrared spectroscopy (FT-IR), thin-layer chromatography-flame ionization detection (TLC-FID), and scanning electron microscopy (SEM). FT-IR analysis revealed GA's interaction with asphalt as primarily physical, suggesting its role as a stabilizing agent. TLC-FID results indicated a chemical shift in the asphalt composition, with a notable increase in saturates and resins and a decrease in aromatics, enhancing the asphalt’s thermodynamic stability. SEM analysis demonstrated excellent miscibility of GA with the asphalt binder, crucial for consistent material performance. Rheological tests revealed changes in the mechanical properties of the asphalt, including reduced penetration and ductility but increased softening point and viscosity. Dynamic shear rheometer (DSR) testing indicated improved rutting resistance, enhancing the asphalt's high-temperature performance. Our findings suggest that GA is an effective, environmentally friendly additive, offering significant improvements in asphalt mixture performance.
Green Roads Ahead: Integrating Gum Arabic in Tunisian Asphalt Formulas
Lecture Notes in Civil Engineering
Varma, Anurag (editor) / Chand Sharma, Vikas (editor) / Tarsi, Elena (editor) / Nciri, Nader (author)
International Conference on Trends in Architecture and Construction ; 2024 ; Chandigarh, India
Proceedings of the 2nd International Conference on Trends in Architecture and Construction ; Chapter: 68 ; 1207-1224
2024-10-18
18 pages
Article/Chapter (Book)
Electronic Resource
English
Gum Arabic , Polysaccharides , Bio-modifier , AP-5 asphalt cement , FT-IR , TLC-FID , Colloidal instability index (CII) , SEM , DSR , Rheological properties , Sustainable civil engineering Engineering , Building Construction and Design , Sustainable Development , Public Policy , Cyber-physical systems, IoT , Professional Computing , Ecology
Online Contents | 1994
| ASCE | 2016
| Online Contents | 2010
| UB Braunschweig | 1928
| UB Braunschweig | 1925