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FINITE ELEMENT SIMULATION OF NONDESTRUCTIVE TESTING FOR PAVEMENT STRUCTURAL EVALUATION

Waheed Uddin, Adil Godiwalla

Open publisher page 1 citations

Abstract

This paper presents some results of three-dimensional finite-element computer simulations carried out to back calculate pavement moduli from the measured surface deflection response of the pavement-subgrade models of asphalt and concrete pavements, subjected to a standard falling weight deflectometer (FWD) load. A micromechanical approach is used to predict viscoelastic properties of asphaltic mixes. This paper demonstrates the effect of viscoelastic material properties on pavement responses dynamic FWD loading.

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What this paper is about

This paper presents some results of three-dimensional finite-element computer simulations carried out to back calculate pavement moduli from the measured surface deflection response of the pavement-subgrade models of asphalt and concrete pavements, subjected to a standard falling weight deflectometer (FWD) load. A micromechanical approach is used to predict viscoelastic properties of asphaltic mixes. This paper demonstrates the effect of viscoelastic material properties on pavement responses dynamic FWD loading.

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Available abstract

This paper presents some results of three-dimensional finite-element computer simulations carried out to back calculate pavement moduli from the measured surface deflection response of the pavement-subgrade models of asphalt and concrete pavements, subjected to a standard falling weight deflectometer (FWD) load. A micromechanical approach is used to predict viscoelastic properties of asphaltic mixes. This paper demonstrates the effect of viscoelastic material properties on pavement responses dynamic FWD loading.

Key concepts: Falling weight deflectometer, Subgrade, Deflection (physics), Finite element method, Viscoelasticity, Asphalt concrete, Structural engineering, Geotechnical engineering

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