Péter Fülkei-T

55328259300

Publications - 4

Creep model to determine rut development by autonomous truck axles on pavement

Péter Fülkei-T Richárd Nagy Mohammad Fahad

Publication Name: Pollack Periodica

Publication Date: 2022-04-30

Volume: 17

Issue: 1

Page Range: 66-71

Description:

Impacts of autonomous truck's passes on pavement have been analyzed in this research. Two types of lateral positioning namely zero wander and uniform wander along with a super single wide tire and a dual tire have been analyzed with variable traffic speeds in ABQUS. The study concludes with the results in favor of usage of a super single wide tire under a uniform wander mode. The highest amount of pavement damage in terms of maximum rut depth is caused by the dual wheel assembly moving under a zero-wander mode. The magnitude of rut depth increases by a factor of two when a dual tire assembly is used instead of a wide tire assembly. At a uniform wander mode, rut depth increases by 0.2 mm for every 10 km/h decrease in traffic speed within 90 km/h to 70 km/h range.

Open Access: Yes

DOI: 10.1556/606.2021.00328

Correlation between permanent deformation-related performance parameters of asphalt concrete mixes and binders

Kálmán Adorjányi Péter Fülkei-T

Publication Name: Central European Journal of Engineering

Publication Date: 2013-01-01

Volume: 3

Issue: 3

Page Range: 534-540

Description:

This paper examines methods to predict the performance of hot asphalt concrete mixes based on performance parameters of binders. Specifically, relationships between binder parameters determined from multiple stress creep and recovery tests were correlated to the creep parameters of hot asphalt concrete mixes obtained from cyclic load compression testing. For the determination of creep parameters, a modified expression of the creep curve is proposed to cover the entire spectrum of permanent deformation; including the tertiary creep phase. Non-recoverable compliance, unrecovered strain, and recoverable strain of binders show good correlation to creep parameters of hot asphalt concrete mixes such as creep rate and high temperature performance ratio. Additionally, unrecovered strain and non-recoverable compliance of binders correlates well with mean rut depth of asphalt concrete mixes. However, no correlation has been detected between the difference in non-recoverable compliance of binders and permanent deformation parameters of asphalt concrete mixes.

Open Access: Yes

DOI: 10.2478/s13531-012-0073-6

Performance parameters and stress sensitivity of bitumen at high temperature

Kálmán Adorjányi Péter Fülkei-T

Publication Name: Pollack Periodica

Publication Date: 2012-07-01

Volume: 7

Issue: 2

Page Range: 109-116

Description:

Permanent deformation in the form of rutting is the most frequently occurring defect of asphalt pavements. This paper gives a short overview of bitumen performance parameters used for characterization of resistance against permanent deformation in the USA and Europe. Investigation of relationships between rheological parameters measured with dynamic shear rheometer using different test modes is presented. The test program consisted of measuring of performance parameters of paving grade, hard, polymer modified and rubber bitumen binders. They were tested in the linear viscoelastic range and beyond. Correlations between complex shear modulus, combined with phase angle, complex viscosity, stress sensitivity, and zero-shear viscosity are given. However, the correspondence of binder parameters with relevant performance parameters of asphalt mixes have to be further investigated.

Open Access: Yes

DOI: 10.1556/Pollack.7.2012.2.10

Improving pavement performance by compact-asphalt technology

Péter Fülkei-T

Publication Name: Pollack Periodica

Publication Date: 2009-12-01

Volume: 4

Issue: 3

Page Range: 111-120

Description:

A quite considerable part of the Hungarian road infrastructure is in critical condition due to the steady traffic growth of heavy good vehicles and increasing frequency of extreme weather conditions. The author analyzed the most typical deterioration problems of asphalt pavements, their possible causes and the reasons of shortened service life of these pavements. The impacts of construction compact-asphalt technology' modifications on the asphalt pavements were studied. Based on laboratory analysis of appropriate specimens, as a result of these technology modifications, changing characteristics of the asphalt pavement were revealed and more reliable data were provided for lifecycle costing and maintenance parameters used as input in the economic analysis. © 2009 Akadémiai Kiadó.

Open Access: Yes

DOI: 10.1556/Pollack.4.2009.3.10