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Performance of Crumb Rubber Tire-Modified Bitumen for Malaysian Climate Regions
Ronald Blab1, Juraidah Ahmad2, Ekarizan Shaffie2,3
1Institute of Transportation, Faculty of Civil and Environmental Engineering, TU Wien, Karlsplatz 13/E230, 1040 Vienna, Austria.
Materials (Basel, Switzerland)
|December 17, 2024
Summary
Recycling waste tires into crumb rubber-modified bitumen (CR-TMB) enhances pavement`s physical and rheological properties. This sustainable approach improves road durability and strength while reducing environmental pollution from waste tires.
Area of Science:
- Civil Engineering
- Materials Science
- Environmental Engineering
Background:
- Global waste tire accumulation poses significant environmental challenges.
- Bitumen modification with waste materials is explored for sustainable infrastructure.
- Crumb rubber-modified bitumen (CR-TMB) offers potential for enhanced pavement performance.
Purpose of the Study:
- To evaluate the performance of crumb rubber-modified bitumen (CR-TMB) for road construction in Malaysia.
- To assess pavement design temperatures using SUPERPAVE standards.
- To investigate the physical, rheological, and aging properties of CR-TMB.
Main Methods:
- SUPERPAVE standards and finite difference method (FDM) for temperature analysis.
- Dynamic shear rheometer, rotational viscometer, and bending beam rheometer for property testing.
- Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) for aging analysis.
Main Results:
- CR-TMB, with 15% crumb rubber, demonstrated enhanced physical and rheological properties compared to neat bitumen (PEN 60/70).
- Significant improvement in aging behavior was observed for CR-TMB.
- Malaysian pavement design temperatures were assessed under simulated conditions.
Conclusions:
- Incorporating crumb rubber into bitumen improves pavement durability and strength.
- CR-TMB presents a sustainable and cost-effective solution for road construction by recycling waste tires.
- The study supports the use of CR-TMB for more resilient and environmentally friendly infrastructure.
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