Study on the effect of polyester fibres on the crack resistance of asphalt mixtures with different binders based on acoustic emission analysis
Source abstract
Abstract
This study investigates the effects of polyester fiber length and binder type (70-penetration, SBS-modified, and epoxy-modified asphalt) on the fracture behavior of asphalt concrete. Semicircular bending (SCB) tests integrated with acoustic emission (AE) monitoring, Weibull fitting, and K-means clustering were used to evaluate cracking mechanisms. Results indicated that 6 mm fibers optimized AC-13 mixture performance. In SBS-modified mixtures, fibers enhanced toughness, increasing the post-peak fracture energy ratio from 48.52% to 58.34%. Conversely, in epoxy-modified mixtures, fibers improved pre-peak crack resistance, raising pre-peak fracture energy and tensile strength by 64.59% and 20.26%, respectively. Weibull and cluster analyses confirmed that fiber bridging and pull-out delayed crack propagation by promoting cohesive failure. The proposed SCB–AE framework provides quantitative guidance for optimizing fiber parameters to enhance pavement durability.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Magnesium Oxide Properties and Applications · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Southeast University
The Hong Kong Polytechnic University
University of Liverpool
Funding
National Natural Science Foundation of China · the SEU Innovation Capability Enhancement Plan for Doctoral Students · the Postgraduate Research & Practice Innovation Program of Jiangsu Province
References (46)
Show source-provided references
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