Determination of fracture parameters of asphalt mixes by the repeated indirect tensile test
Title: Determination of fracture parameters of asphalt mixes by the repeated indirect tensile test
Author(s): F. Martinez, S. Angelone
Paper category : conference
Book title: Sixth International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials
Editor(s): M. N. Partl
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 387 - 393
Total Pages: 7
Nb references: 10
Abstract: The fatigue of asphalt mixes constitutes one of the main types of distress of pavement structures.
In laboratory, different procedures and testing equipments were implemented to describe the fatigue properties of asphalt mixes. Among them, the repeated indirect tensile test is used to determine the fatigue properties of asphalt mixes and also, their resilient modulus. Generally, fatigue tests are conducted using one of the two basic types of loading: controlled-strain or controlled-stress. Both loading modes produce fatigue prediction models relating the initial response (tensile strain or stress) of asphalt mixture to the fatigue life. In recent years, the application of more fundamental approaches has been suggested. One of these approaches is based on the principles of the Fracture Mechanics.The most popular relationship used in fracture mechanics is the Paris´ law. This paper presents an application of the Repeated Indirect Tensile Test to determine the fundamental parameters governing the crack propagation process in asphalt mixtures.The basic adopted hypotheses, the used data reduction techniques and the results obtained for an asphalt mixture considered as an example are presented, discussed and compared with other cited in the analysed literature.
Online publication: 2003-03-02
Publication type : full_text
Public price (Euros): 0.00