Abubeker Ahmed


Bild på Abubeker Ahmed

Abubekers forskningsresultat


Full scale accelerated pavement tests to evaluate the performance of permeable and...

The increasing proportion of paved surface due to urbanization means that the conditions for urban trees and vegetation to survive have deteriorated. Factors such as air pollution, poor drainage, and the lack of usable soil for root growth...

Viscoelastic Response Modelling of a Pavement under Moving Load

This paper demonstrates the application of a generalized layered linear viscoelastic (LVE) analysis for estimating flexible pavements' structural response. The procedure is based on the Multi-Layered Elastic Theory (MLET) and the...

Characterization of heavy traffic axle load spectra for mechanistic-empirical pavement...

 Heavy traffic axle load spectrum (ALS) is  one of the key inputs for mechanistic-empirical analysis and design of pavement structures. Frequently, the entire ALS is aggregated into Equivalent Number of Single Axle Loads (ESAL) or assumed to have...

Evaluation of a permanent deformation model for asphalt concrete mixtures using...

This paper evaluates a mechanistic–empirical permanent strain model for asphalt concrete mixtures. The evaluation was carried out based on two different types of tests: an extra-large wheel-tracking (ELWT) test and a full-scale accelerated pavement...

Numerical validation of viscoelastic responses of a pavement structure in a full-scale...

This paper demonstrates the application of a generalised layered linear viscoelastic (LVE) analysis for estimating the structural response of flexible pavements. A comparison of the direct layered viscoelastic responses with approximate solutions...

The Svappavaara road test sections: field coring and laboratory tests

Detta notat beskriver laboratorieprovningar av provkroppar tagna från fyra vägsträckor på E45 nära Svappavaara i Norrbottens kommun. Sträckorna ligger omkring 100 kilometer norr om polcirkeln i ett klimat som kännetecknas av långa kalla vintrar och...

Mechanistic-Empirical Modelling of Flexible Pavement Performance: Verifications Using APT...

Mechanistic-Empirical  (M-E)  pavement  design  procedures  are  composed  of  a  reliable  response model to estimate the state of stress in the pavement and distress models in order to predict the different types of pavement distresses due to the...

An Algorithm to Estimate Rational Values of Phase Angles and Moduli of Asphalt Mixtures

The objective of this study was to develop and evaluate an algorithm based on Fast Fourier Transform (FFT) that can calculate rational values of phase angle (f) and moduli of the variants of asphalt mixtures for the data obtained from the different...

Evaluation of permanent deformation models for unbound granular materials using...

Mechanistic-empirical (M-E) pavement design methods have become the focus of modern pavement design procedure. One of the main distresses that M-E design methods attempt to control is permanent deformation (rutting). The objective of this paper is...

Fast layered elastic response program for the analysis of flexible pavement structures

One of the key components in analysing pavement structural behaviour is the response model which is used to estimate the stresses, strains and displacements of the pavement structure subjected to the existing traffic, taking into account the...

Mechanistic modelling of HVS flexible pavement structure

A response model to be employed in a mechanistic-empirical pavement performance prediction model based on multilayer elastic theory has been developed. An iterative approach using a method of successive over-relaxation of stress dependency model is...

Modeling of flexible pavement structure behavior: Comparisons with Heavy Vehicle...

 A response model to be employed in a mechanistic-empirical pavement performance predictionmodel based on multilayer elastic theory has been developed. An iterative approach using a method of successiveover-relaxation of a stress dependency model is...