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[期刊论文]

Characteristics of morphology and tensile strength of asphalt mixtures under impact loading using split Hopkinson pressure bar

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author:

Jiang, Z. (Jiang, Z..) [1] | Hu, C. (Hu, C..) [2] | Liu, M. (Liu, M..) [3] | Unfold

Indexed by:

Scopus

Abstract:

The paper presents a study of the fracture morphology and tensile strength characteristics of asphalt mixtures under indirect tensile tests. A Split Hopkinson Pressure Bar (SHPB) and Universal Testing Machine (UTM) were utilized under the impact (27.7–93.8 s−1) and quasi-static loading modes (0.008–0.033 s−1), respectively. It was found that the bonding, cohesive, and intra-aggregate failures occurred under quasi-static loading, and even the large aggregates were broken under the impact loading. The cracks can be treated as two and three dimensional under quasi-static and impact loading modes, respectively. The temperature effect on tensile strength under impact loading was significantly less than that of quasi-static loading, and the enhancement of dynamic loading increased considerably in higher temperatures. The temperature was the major external factor to influence the brittleness of the asphalt mixture, while the influence of the strain rate was relatively small. Finally, some suggestions to improve the cracking resistance of asphalt mixtures were proposed in both loading modes. © 2020 Elsevier Ltd

Keyword:

Asphalt mixture; Dynamic behavior; Impact load; Morphology; SHPB; Tensile strength

Community:

  • [ 1 ] [Jiang, Z.]Department of Civil Engineering, Ryerson University, Toronto, M5B 2K3, Canada
  • [ 2 ] [Hu, C.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 3 ] [Liu, M.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 4 ] [Easa, S.M.]Department of Civil Engineering, Ryerson University, Toronto, M5B 2K3, Canada
  • [ 5 ] [Easa, S.M.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 6 ] [Zheng, X.]College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China

Reprint 's Address:

  • [Hu, C.]College of Civil Engineering, Fuzhou UniversityChina

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Source :

Construction and Building Materials

ISSN: 0950-0618

Year: 2020

Volume: 260

6 . 1 4 1

JCR@2020

7 . 4 0 0

JCR@2023

ESI HC Threshold:196

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 6

30 Days PV: 1

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