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- Title
低温地区桥面纤维浇注式沥青混合料的低温性能研究.
- Authors
卜春锋
- Abstract
In order to study the crack resistance of asphalt mixture of steel deck pavement in low temperature area, select the matrix, SBS, pouring type and fiber pouring type asphalt mixture, conduct low temperature trabecular bending test, low temperature bending creep test and low temperature splitting test for each asphalt mixture at different low temperatures, here′s the following conclusions:(1) The strength modulus, bending creep flexibility and splitting limit strain of the substrate, SBS, pouring type and fiber pouring type asphalt mixture are all gradually decreasing with the decrease of temperature, the low-temperature splitting strength increased first and then decreased;(2) The incorporation of fiber can significantly enhance the low temperature crack resistance of poured asphalt mixture, the improvement effect of BF fiber on the low temperature crack resistance of poured asphalt mixture is obviously better than that of PF and LF fiber;(3) The change pattern of low temperature splitting test of fiber pouring asphalt mixture is more sensitive than that of low temperature trabecular bending and bending creep test. Therefore, it is recommended to evaluate the low temperature stability of fiber pouring asphalt mixture in cold areas.
- Subjects
LOW temperatures; ASPHALT testing; FIBER testing; CREEP (Materials); BEND testing; ASPHALT; BENDING strength
- Publication
Fly Ash Comprehensive Utilization, 2023, Vol 37, Issue 5, p50
- ISSN
1005-8249
- Publication type
Article
- DOI
10.19860/j.cnki.issn1005-8249.2023.05.008