Roads and Bridges - Drogi i Mosty
12, 3, 2013, 269-281

Identification of homogeneous pavement sections

Bartłomiej Krawczyk Mail
Wrocław University of Technology, Institute of Civil Engineering
Antoni Szydło Mail
Wrocław University of Technology, Institute of Civil Engineering


Frequently FWD measurement results of vertical displacements of the same object differ to a considerable degree. Varying measurement results of displacements (making the subsequent base for the identification of elasticity moduli of relevant pavement structure layers) may not be directly averaged since they would build up a false picture of the tested section. The reliable identification method for homogenous sections of pavement structure based on measurement results of FWD tested vertical displacements, with the use of some basic properties of the exponential function, was described in this paper. The applied identification algorithms were analysed and their limitations were pointed out. The effectiveness of the elaborated method was verified on a real pavement section with four different structures.


Weight Deflectometer (FWD), homogeneous sections, pavement construction

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Page E.S.: Continuous Inspection Scheme. Biometrika, 41, 1-2, 1954, 100-115

Bennett Ch.R.: Sectioning of Road Data for Pavement Management. Proceedings of the 6th International Conference on Managing Pavements, Queensland, 2004

Guide for Design of Pavement Structures (4th Edition). AASHTO, 1993

Fridtjof T.: Generating homogeneous road sections based on surface measurements: available methods. Proceedings of the 2nd European Pavement and Asset Management Conference, Berlin, 2004

Mechowski T.: Wpływ dokładności identyfikacji konstrukcji nawierzchni na wymiarowanie wzmocnienia dróg. IBDiM, Warszawa, 2006

Use of Falling Weight Deflectometers in Pavement Evaluation. European Cooperation in the Field of Scientific and Technical Research COST 336, 2005

Guidance Notes on Backcalculation of Layer Moduli and Estimation of Residual Life Using Falling Weight Deflectometer Test Data. Highways Department Research & Development Division, Hong Kong, 2009

Emery S., Horak E.: Falling Weight Deflectometer Bowl Parameters As Analysis Toll for Pavement Structural Evaluations. Proceedings of 22nd ARRB Conference, Canberra, 2006

Szydło A., Krawczyk B., Ruttmar I.: Rozrzuty wyników pomiarów przemieszczeń nawierzchni rejestrowanych za pomocą ugięciomierza dynamicznego FWD. Międzynarodowa Konferencja Nowoczesne Technologie w Budownictwie Drogowym, Poznań, 2009

Identification of homogeneous pavement sections

Krawczyk, Bartłomiej; Szydło, Antoni. Identification of homogeneous pavement sections. Roads and Bridges - Drogi i Mosty, [S.l.], v. 12, n. 3, p. 269-281, feb. 2013. ISSN 2449-769X. Available at: <>. Date accessed: 20 Sep. 2021. doi: