Warm Mixed Asphalt (WMA) is regarded one of the most preferred techniques of producing asphalt pavement materials since it has comparable performance to Hot Mixed Asphalt (HMA) while having lower production and compaction temperatures. The current study investigates the impact of WMA additives (organic-Sasobit and Chemical-Zycotherm) on compassion energy parameters like compactibility factor (CF), number of gyrations (Ndesign), energy consumption, and intermediate cracking potential of asphalt mixtures containing Reclaimed Asphalt Pavement (RAP) aggregates. The semi-circular bend test is used to assess the cracking potential of one conventional and fourteen modified asphalt mixtures with varying RAP and WMA-additive proportions. WMA additives improved the workability of both conventional and RAP-incorporated asphalt pavement mixtures. Furthermore, the inclusion of additives improved the cracking resistance of low-proportion RAP mixtures. Additionally, it decreases strain energy regardless of the amount of RAP present, demonstrating the capacity of additive to lower stiffness and enhance the workability of RAP mixtures. The current study’s objective is to evaluate the workability and crack resistance of asphalt mixes that incorporate WMA (organic and chemical) additives along with RAP aggregates. This information will undoubtedly aid future researchers and field engineers in designing WMA mixes that contain a high percentage of RAP aggregates and organic and chemical additives in an appropriate way.
Crack Resistance by Semi-Circular Bending Test and Gyratory Compaction of High Fraction RAP in Warm Mixed Asphalt Mixtures
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 28 , 12 ; 5572-5581
2024-12-01
10 pages
Article (Journal)
Electronic Resource
English
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