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This research examines how glass powder and fly ash-based geopolymer additives affect the properties of asphalt binders.

Impact of Glass Powder/Fly Ash-Based Geopolymer on the Rheological and Performance of Asphalt Binder

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This research examines how glass powder and fly ash-based geopolymer additives affect the properties of asphalt binders.
Analyzed asphalt binders modified with glass powder and fly ash-based geopolymer at varying percentages (0%, 4%, 8%, 12%)
Measured shear complex modulus (G*) and phase angle (δ) at different temperatures
Compared performance against neat asphalt binders.
8% GFG increased G* from 9.48 kPa to 22.32 kPa, reduced δ from 76.9° to 71.5°
Modified asphalt binders demonstrated better rutting resistance compared to neat binders
4% GFG binder showed the highest fatigue cracking resistance among the tested GFG percentages.

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Randomized trial analyzes rheological effects of geopolymer additives on asphalt binders, suggesting better durability.

Hamid et al. (2026) studied this question.

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