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  1. Home
  2. Indian Institute of Technology Madras
  3. Publication3
  4. Energy dissipation approach to quantify the fatigue damage of glass fibre grid inlaid asphalt mixture
 
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Energy dissipation approach to quantify the fatigue damage of glass fibre grid inlaid asphalt mixture

Date Issued
01-01-2020
Author(s)
Raj, Arbin
Abhijith, B. S.
Krishnan, J. Murali
Abstract
The glass fibre grid in asphalt mixtures can act as a stiffener as well as enhance the fatigue life. Four-point beam (4PB) bending test is usually carried out to evaluate the fatigue life of such composite mixtures. While there are several post-processing methods used to define the fatigue failure criterion from the 4PB test data, the total energy dissipation approach is predominantly used. In this paper, the fatigue dissipation for the computation of fatigue life is used instead of total energy dissipation. In this investigation, 4PB tests were carried out on asphalt mixtures integrated with and without the grid at 600 and 800 μϵ. The fatigue life computed using fatigue dissipation shows that the grid is more effective at 800 μϵ, and the fatigue life of the grid inlaid sample is 5.7 times higher than the samples without the grid.
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