Performance of Crumb Rubber Tire-Modified Bitumen for Malaysian Climate Regions

Researchers are increasingly concerned about the vast amounts of waste rubber tires produced globally, which contribute significantly to environmental pollution. The potential of incorporating waste rubber tires to modify bitumen has garnered considerable interest. This study assesses pavement desig...

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Bibliographic Details
Published in:Materials 2024-12, Vol.17 (23), p.5800
Main Authors: Blab, Ronald, Ahmad, Juraidah, Shaffie, Ekarizan, Sidek, Norbaya, Mirwald, Johannes, Eberhardsteiner, Lukas, Hofko, Bernhard
Format: Article
Language:English
Subjects:
Aging
Aging (materials)
Air temperature
Analysis
Asphalt pavements
Bitumens
Bituminous materials
Boundary conditions
Building materials
Climate
Design standards
Finite difference method
Fourier transforms
Heat
Infrared analysis
Malaysia
Mechanical properties
Pavement construction
Pavement design
Pavements
Pennsylvania
Radiation
Recycling (Waste, etc.)
Rheological properties
Rheology
Rheometers
Road construction
Rotational spectra
Rubber
Sustainable development
Temperature
Tires
United States
Waste management
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Summary:Researchers are increasingly concerned about the vast amounts of waste rubber tires produced globally, which contribute significantly to environmental pollution. The potential of incorporating waste rubber tires to modify bitumen has garnered considerable interest. This study assesses pavement design temperatures according to SUPERPAVE standards for representative Malaysian regions. The assessment is based on hourly air temperature data and simulates temperature diffusion in typical Malaysian road pavements using the finite difference method (FDM). Tests on neat bitumen (PEN 60/70) and crumb rubber-modified bitumen (CR-TMB) samples evaluated their physical and rheological properties across various temperatures and aging stages. These tests were conducted using the dynamic shear rheometer, rotational viscometer, and bending beam rheometer. The attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) analysis provided insights into the aging processes of both PEN 60/70 and CR-TMB. The findings indicate that adding 15% crumb rubber to produce CR-TMB enhances the physical and rheological properties of bitumen. Additionally, this modification significantly improves aging behavior, highlighting its potential for more resilient and sustainable road construction materials. Therefore, the use of crumb rubber in road construction should be considered to improve pavement durability and strength. Furthermore, utilizing crumb rubber as an alternative material can reduce costs by recycling waste materials.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma17235800