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A Review of Compatibility Evaluation Methods and Improvement Measures Between Rubber Powder and Base Asphalt
Dawei Wang1, Peidong Du2, Jiping Wang3
1Guangxi Communications Investment Group Corporation Ltd., Nanning 530022, China.
Materials (Basel, Switzerland)
|January 10, 2026
Summary
Improving rubber asphalt compatibility enhances performance. This review covers factors, evaluation, and methods to achieve a homogeneous system for better storage stability and high-temperature properties.
Area of Science:
- Materials Science
- Civil Engineering
- Polymer Science
Background:
- Waste rubber tires are an environmental concern.
- Rubber asphalt offers improved performance over original asphalt.
- Poor compatibility between rubber powder and asphalt limits high-temperature benefits.
Purpose of the Study:
- To provide a comprehensive overview of rubber asphalt.
- To discuss factors influencing rubber powder-asphalt compatibility.
- To explore methods for improving compatibility and performance.
Main Methods:
- Summarizing optimal preparation processes for rubber asphalt.
- Reviewing physical and chemical methods to enhance rubber powder activity.
- Investigating the addition of additives to promote cross-linking.
Main Results:
- Desired compatibility involves cross-linking and even distribution of rubber powder in asphalt.
- Preparation process significantly impacts rubber asphalt properties.
- Physical/chemical treatments and additives can improve compatibility.
Conclusions:
- Compatibility is crucial for storage stability and rheological performance.
- Rheological methods are standard for evaluation, with molecular morphology analysis gaining traction.
- Achieving a cross-linked network structure is key for effective rubber asphalt.
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