Performance Evaluation of Asphalt Mortar and Stone Matrix Asphalt Reinforced with Hybrid Fibers
Source abstract
Abstract
ABSTRACT To achieve a synergistic effect of various fibers in hot-mix asphalt, an optimization method for determining the optimal composition ratio of hybrid fiber (HF), containing lignin, polyester, and basalt fibers (BFs) was presented according to the simplex centroid design method and the rheological properties of HF-reinforced asphalt mortar. Additionally, the pavement performance and dynamic rheological characteristics of the HF-reinforced stone matrix asphalt (SMA) were assessed using the wheel tracking test, beam bending test, freeze–thaw indirect tensile test, and dynamic modulus test (DMT). The results indicate that the optimal composition ratio of lignin, polyester, and BFs in HF is 0:0.55:0.45, respectively. Furthermore, HF-reinforced SMA demonstrates the highest resistance to moisture damage and rutting among the fiber-reinforced SMAs, with low-temperature cracking resistance comparable to that of polyester fiber-reinforced SMA. The DMT indicate that the HF-reinforced SMA has the largest dynamic modulus among the four SMAs, suggesting that it exhibits the strongest stiffness and resistance to deformation. Additionally, master curves of the dynamic modulus were constructed for the various fiber-reinforced SMAs.
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Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Innovative concrete reinforcement materials · Geotechnical Engineering and Soil Stabilization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Qilu Transportation, Shandong University 1 , No. 12550 Erhuan East Rd., Jinan 250002, Shandong ,
Shandong Hi-Speed Group Co., Ltd. 2 , No. 8 Longao North Rd., Jinan 250098, Shandong ,
School of Qilu Transportation, Shandong University 3 , No. 12550 Erhuan East Rd., Jinan 250002, Shandong ,
Shandong Hi-Speed Binzhou Development Co., Ltd. 4 , No. 259 Huanghe 5th Rd., Bohai 22nd Rd., Binzhou 256600, Shandong ,
Funding
Natural Science Foundation of Shandong Province · Shandong Hi-Speed Group Transportation Technology Plan
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