Effect of pore structure on fatigue of pervious concrete

Pervious concrete (PC) is a class of porous pavement whose properties are largely influenced by pore parameters. Under repeated vehicular loads, PC undergoes reduction in stiffness leading to failure. The purpose of this study was to understand the influence of porosity and pore sizes on fatigue of 13 PC mixtures encompassing 104 beams, and establish stiffness reduction model / damage evolution in respect of repeated loads for PC based on the existing model used for conventional concrete. Fatigue life and stiffness depend on porosity at the fractured face of specimens as investigated using image analyses, which was more influential than the volumetric porosity determined through ASTM C1754. The reduction in stiffness followed S-curve depicting three distinct stages of damage evolution. The damage model fitted the experimental data with very high accuracy (R² > 0.95) and precision. The specimens shifted from secondary to tertiary stage when the reduction in initial stiffness was 65–85%, which occurred at 90–98% of the total life. This study is envisioned to assist in the development of fatigue test protocols as well as recommend PC pavements as part of the maintenance and rehabilitation programmes.

• Record URL:
  • https://doi.org/10.1080/14680629.2018.1464500
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14680629
• Supplemental Notes:
  • © 2018 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Chandrappa, Anush K
  • Biligiri, Krishna Prapoorna
• Publication Date: 2019-10

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1525-1547
• Serial:
  • Road Materials and Pavement Design
  • Volume: 20
  • Issue Number: 7
  • Publisher: Taylor & Francis
  • ISSN: 1468-0629
  • EISSN: 2164-7402
  • Serial URL: http://www.tandfonline.com/loi/trmp20

Subject/Index Terms

• TRT Terms: Concrete pavements; Fatigue (Mechanics); Fatigue tests; Impervious materials; Pore size distribution; Porosity; Stiffness
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01717433
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 19 2019 3:07PM