What does this research mean for the field?

A high-performance asphalt concrete containing 50% reclaimed asphalt pavement and a conventional binder achieves optimal stiffness, durability, and balanced performance for cold-region pavements at an 80% binder activation level. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to assess the performance of high reclaimed asphalt pavement in a balanced mix design framework.

August 9, 2026Canadian Journal of Civil Engineering

Balanced Mix Design for RAP-Rich High-Modulus Asphalt Concrete: Comparative Analysis of Rutting, Intermediate- and Low-Temperature Cracking

View Full Paper

Ask AI

Bookmark

Authors

ICIdelgardy CostaUniversity of Alberta AWAkshay WaimUniversity of Alberta AGAshmita GuptaUniversity of Alberta

Discussion

Member takes

Implication

Randomized trial compares rutting and cracking in high-performance asphalt concrete with various RAP contents, suggesting optimal performance levels.

Key Points

This research aims to assess the performance of high reclaimed asphalt pavement in a balanced mix design framework.
Developed high-performance asphalt concrete using 50% RAP and PG 64-22 binder.
Examined three binder activation levels: 60%, 80%, and 100%.
Conducted performance tests including Hamburg Wheel-Tracking, IDEAL-CT, and DCT.
80% binder activation demonstrated the most balanced performance among the tested levels.
60% activation led to significant rutting issues.
100% activation caused reduced tolerance for cracking.

Cite This Study

Costa et al. (2026) studied this question.

synapsesocial.com/papers/6a782d182e1896536c83fed4 https://doi.org/10.1139/cjce-2025-0529

View Full Paper

Ask AI

Bookmark

Implication

Randomized trial compares rutting and cracking in high-performance asphalt concrete with various RAP contents, suggesting optimal performance levels.