Deformational properties of unbound granular pavement materials (CROSBI ID 611611)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Načinović margan, Andrea ; Arbanas, Željko. ; Deluka-Tibljaš, Aleksandra ; Cuculić, Marijana
engleski
Deformational properties of unbound granular pavement materials
Selection of pavement materials takes very important role in pavement design procedure. The understanding of pavement structure behavior under cyclic loading is necessary in order to assure its serviceability during a predicted structure life. Unbound granular material layers in pavement structure represent a base for upper construction and their compaction and deformational behavior under cyclic loading have significant impact on the bearing capacity of upper layers and overall pavement construction. Unbound granular materials show complex behavior under cyclic loads with gradual accumulation of permanent deformation. Accumulation of a large number of small permanent deformation in unbound granular material usually cause the failure of the sub-base layer and larger irreversible deformations in the upper layers of the pavement structure. Several analytical models have been developed to describe the development of the permanent deformations and behavior of unbound granular materials under these deformations. Recent studies and analyses are oriented on laboratory testing of different types of unbound materials under triaxial loading. These studies aim at developing analytical models which are more accurate in predicting deformation behavior of particular local materials under specific stress and moisture conditions. The purpose of this paper is to present an overview of the models that describe permanent deformation in unbound granular materials and correlation between permanent deformation and number of load cycles. Particular emphasis in the analyses would be on models that can be applied on unbound pavement layers constructed of local materials in Croatia.
unbound granular material; pavement construction; permanent deformation; analytical models; triaxial loading
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Podaci o prilogu
649-656.
2014.
objavljeno
Podaci o matičnoj publikaciji
Road and Rail Infrastructure III
Lakušić, Stjepan
Zagreb: Faculty of Civil Engineering University of Zagreb
1848-9842
Podaci o skupu
3rd International Conference on Road and Rail Infrastructure - CETRA 2014
predavanje
28.04.2014-30.04.2014
Split, Hrvatska