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This is a Experimental Study study.

Asphalt Binder Modification in Flexible Pavement Using Different Amounts of Crumb Rubber

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Laboratory analysis reveals crumb rubber improvements in asphalt binder properties using various percentages.

Partial replacement of asphalt binder with crumb rubber improves performance metrics, enhancing durability and sustainability.
The viscosity of PG76 asphalt binder increased with 20% crumb rubber replacement during short-term aging tests.
Asphalt binder modified with crumb rubber showed decreased penetration rates, indicating increased stiffness under aging conditions.
Temperature susceptibility reduced with crumb rubber substitution, especially evident in the softening point and viscosity test results.

Saber Shah Saberi (2025) studied this question.

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