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Influence of Basalt Fibers on the Crack Resistance of Asphalt Mixtures and Mechanism Analysis

Materials, 2022-01, Vol.15 (3), p.744 [Tạp chí có phản biện]

2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2022 by the authors. 2022 ;ISSN: 1996-1944 ;EISSN: 1996-1944 ;DOI: 10.3390/ma15030744 ;PMID: 35160691

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  • Nhan đề:
    Influence of Basalt Fibers on the Crack Resistance of Asphalt Mixtures and Mechanism Analysis
  • Tác giả: Wu, Bangwei ; Meng, Weijie ; Xia, Ji ; Xiao, Peng
  • Chủ đề: Aggregate gradation ; Aggregates ; Asphalt mixes ; asphalt mixture ; Asphalt pavements ; Basalt ; basalt fiber ; Bend tests ; Crack propagation ; crack resistance ; Cracks ; Design ; environmental scanning electron microscope ; Environmentally assisted cracking ; Fatigue failure ; Fracture mechanics ; Mechanical analysis ; Rheology ; Scanning electron microscopy ; Stone ; Stone mastic asphalt ; Tensile tests ; Test methods
  • Là 1 phần của: Materials, 2022-01, Vol.15 (3), p.744
  • Mô tả: The paper aims to investigate the influence of basalt fiber (BF) on the crack resistance of the asphalt mixture and conduct a mechanical analysis. First, two typical asphalt mixtures, namely AC-13 and SMA-13, were designed. The impact of BF on the mixture design results was analyzed. Then, several macroscopic tests, namely the four-point bending test, indirect tensile test, and semicircular bending test (SCB), were conducted to assess the effect of BF on the cracking resistance of asphalt mixtures. Finally, the influence of BF on the cracking resistance of asphalt mixtures was analyzed based on an environmental scanning electron microscope (ESEM) observation. The results show that: (1) BF increases the optimal asphalt content of AC13 and decreases the optimal asphalt content of SMA-13, which is caused by the different asphalt-absorption capacity of BF and lignin fiber (LF). (2) BF enhances both the fatigue crack resistance and temperature crack resistance of asphalt mixtures. The enhancement on the SMA-13 is more significant, indicating that the enhancement of BF on asphalt mixtures is related to the type of aggregate gradation. (3) BFs in the asphalt mixture lap each other to form a spatial network structure. Such structure can effectively improve the crack resistance of the mixture by dispersing the load stress and preventing the flow of asphalt mastic. The study results provide an effective method to design crack-resistant asphalt mixtures.
  • Nơi xuất bản: Switzerland: MDPI AG
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1996-1944
    EISSN: 1996-1944
    DOI: 10.3390/ma15030744
    PMID: 35160691
  • Nguồn: GFMER Free Medical Journals
    PubMed Central
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
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