ANALYSIS OF HPCC PAVEMENTS USING KENPAVE FEA SOFTWARE

Bharath Babu M.D, Amarnath M.S, Suresh Kumar K.S

Abstract: A comprehensive research work on High Performance Cement Concrete (HPCC) pavements is being conducted at Bangalore University. As a part of the study static flexural strengths are determined for Conventional Concrete (CC), Silica Fume Concrete (SFC), High Volume Fly Ash Concrete (HVFAC), Fiber Reinforced Concrete (FRC), and Fiber Reinforced High Volume Fly Ash Concrete (FRHVFAC) using third point loading in the laboratory. Laboratory fatigue teats were also carried out on HPCC beam specimens and number of repetitions to failure determined. Using the results fatigue models and stress charts were developed and slab thicknesses of the HPCCs designed. In this paper an attempt is made to analyze the HPCC pavements using a 2-D Finite Element Analysis (FEA) software - KENPAVE. The critical flexural stresses obtained using the FEA software are compared with stresses obtained from the experimental study. The design life of the HPCC pavements is also analyzed using the FEA software. The variation in flexural stresses as obtained from FEA software when compared with actual flexural stresses ranges from 5 to 6 %. Damage analysis using FEA software shows that predicted design life obtained ranges from 1 to 12 % for various HPCCs. The 12 % variation is for Fiber Reinforced HPCCs indicating that the design life of fiber reinforced HPCCs are more

Keywords: high performance concrete, flexural stresses, finite element analysis software, damage analysis

DOI: https://doi.org/10.15623/ijret.2013.0213044