Naslov
Deformational properties of unbound granular pavement materials

Autori
Načinović margan, Andrea ; Arbanas, Željko. ; Deluka-Tibljaš, Aleksandra ; Cuculić, Marijana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Road and Rail Infrastructure III / Lakušić, Stjepan - Zagreb : Faculty of Civil Engineering University of Zagreb, 2014, 649-656

Skup
3rd International Conference on Road and Rail Infrastructure - CETRA 2014

Mjesto i datum
Split, Hrvatska, 28.04.2014. - 30.04.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
unbound granular material; pavement construction; permanent deformation; analytical models; triaxial loading

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA