Development and use of functional asphalt tender specifications

Title: Development and use of functional asphalt tender specifications
Author(s): R. C. van Rooijen, A. H. de Bondt
Paper category : conference
Book title: Sixth International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials
Editor(s): M. N. Partl
Print-ISBN: 2-912143-35-7
e-ISBN: 2912143772
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 596 - 602
Total Pages: 7
Nb references: 6
Language: English

Abstract: Asphalt pavements at airports and container terminals need to be designed for resistance to permanent deformation and in case of cement treated bases also for resistance to reflective cracking. In this paper resistance to permanent deformation is characterised by mixture viscosity, which is derived from the results of cyclic compression tests. The data comes from two studies and includes different asphalt mixtures with different binders. Mixture viscosity is correlated with bitumen zero shear viscosity. The significance of the results with respect to the development of functional tender specifications is discussed. Jointless asphalt at bridge ends requires that the asphalt pavement is able to follow horizontal movements associated with thermal contraction and expansion without cracking. For the project discussed here, finite element analyses showed to what extent performance is controlled by asphalt stiffness and critical strain at low temperature and (extremely) slow strain rates. These properties are determined for three different asphalt mixtures from frequency sweeps and uniaxial tension tests. For these mixtures, critical strain correlated well with indirect tensile fracture energy. This correlation is used to formulate tender specifications. Differences in fracture energy of laboratory prepared specimens and asphalt cores from the pavement are found to be small.

Online publication: 2003-03-02
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143772.075