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A design methodology for fibre reinforced concrete pavements and slabs-on-grade
, R. Gettu
Published in Universite Laval
2014
Pages: 51 - 56
Abstract
The use of fibre reinforced concrete (FRC) for applications such as slabs-on-grade and pavements has been established to be advantageous due to the superior crack resistance properties, enhanced post cracking moment carrying capacity, and higher performance under fatigue, shrinkage and temperature stresses. In this context, the goal of this doctoral work is to develop and propose a comprehensive methodology for the design of fibre reinforced concrete pavements/slabs-on-grade incorporating the inelastic design techniques and material characteristics specific to FRC. The material parameter adopted in design is the equivalent flexural strength at a specified deflection. A database of flexural toughness parameters based on existing codes has been prepared for typical fibre concretes incorporating various fibres in different dosages and also used for comparison of material performance. The paper discusses the proposed design methodology based on yield line analysis, which results in an economical solution with fibre concretes in comparison to plain concrete. Emphasis has also been given to fatigue stress design in the case of pavements by incorporating a stress correction factor based on S-N relations of FRC. The need to determine the actual temperature differential in slabs has also been illustrated based on the results from experimental program performed at IIT Madras.
About the journal
JournalProceedings of the 10th fib International PhD Symposium in Civil Engineering
PublisherUniversite Laval