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Longitudinal surface cracking in asphalt pavements on steel bridge decks

Title: Longitudinal surface cracking in asphalt pavements on steel bridge decks
Author(s): T. Nishizawa, K. Himeno, K. Uchida, K. Nomura, S. Higashi
Paper category : conference
Book title: Fifth International RILEM Conference on Reflective Cracking in Pavements
Editor(s): C. Petit, I.L. Al-Qadi and A. Millien
Print-ISBN: 2-912143-47-0
e-ISBN: 2912143764
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 537 - 544
Total Pages: 8
Nb references: 6
Language: English

Abstract: Longitudinal surface cracks (LSC) are often observed in asphalt pavements on steel bridge deck. The cracks appear longitudinally from pavement surface in wheel paths and their spacing coincides with a half of spacing of longitudinal ribs. The objective of this study is to find the causes and mechanism of the LSC.A condition survey was conducted on more than 50 steel deck bridges to investigate actual conditions of pavements on the bridges. The survey revealed that LSC actually starts from pavement surface but does not reach its bottom, and that they appear not only above the webs of main girder or longitudinal ribs but also between the webs.
A computer simulation was performed using a newly developed FE model, in which a steel deck structure is modeled with a strip element and the pavement on it is modelled with a prism element. To take into account viscosity of asphalt materials, the Burger model was incorporated. In the simulation, axle loads traveled over a pavement and variations of stresses and strains in the pavement with time were calculated. The dissipated energy in the pavement was estimated. The simulation results suggested that high dissipated energy at the pavement surface between webs might cause the LSC there.

Online publication: 2004-04-15
Publication type : full_text
Public price (Euros): 0.00

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