A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
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.
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.
Effect of pore structure on fatigue of pervious concrete
Chandrappa, Anush K. (author) / Biligiri, Krishna Prapoorna (author)
Road Materials and Pavement Design ; 20 ; 1525-1547
2019-10-03
23 pages
Article (Journal)
Electronic Resource
English
Pore Structure Characterization of Pervious Concrete Using X-Ray Microcomputed Tomography
| British Library Online Contents | 2018
Strength, fracture and fatigue of pervious concrete
| British Library Online Contents | 2013