Title:
A comprehensive methodology for the design of fibre-reinforced concrete pavements
Author(s):
Sunitha K. Nayar; Ravindra Gettu
Publication:
Symposium Paper
Volume:
310
Issue:
Appears on pages(s):
321-330
Keywords:
Fibre-reinforced concrete, pavement design, yield line analysis, fatigue.
DOI:
Date:
3/17/2017
Abstract:
Use of fibre-reinforced concrete for pavements, though widely established, lacks comprehensive standardization with respect to both design as well as implementation. Most widely used design methods have adopted the established techniques used for slab-on-grade, mostly due to lack of studies specific to pavements. This is a major drawback since the failure
of slabs-on-grade is predominantly caused by static loading whereas the failure of pavements, more often than not, occurs at much lower stresses due to fatigue. In this context, a
comprehensive design methodology exclusively for FRC pavements is proposed here including the effect of fatigue in conjunction with inelastic analysis. The static load design
equation is based on Meyerhof’s ultimate load (yield line) analysis. The material capacity is estimated using the flexural capacity factored by a stress reduction factor for FRC in the
cracked and the uncracked state obtained from suitable S-N relations to account for the fatigue stresses. The material parameters incorporated in the design equations include the
flexural strength and the equivalent flexural strength of FRC obtained using the unnotched prisms as per Japanese standards (JSCE-SF4).