Tehnički vjesnik, Vol. 27 No. 6, 2020.
Prethodno priopćenje
https://doi.org/10.17559/TV-20190222101126
The Influence of Temperature Changes on Concrete Pavement
Miloš Šešlija
; University of Novi Sad, Faculty of Technical Sciences, Department of Civil Engineering and Geodesy, Trg Dositeja Obradovica 6, 21000 Novi Sad, Republic of Serbia
Nebojša Radović
; University of Novi Sad, Faculty of Technical Sciences, Department of Civil Engineering and Geodesy, Trg Dositeja Obradovica 6, 21000 Novi Sad, Republic of Serbia
Goran Jeftenić*
; University of Novi Sad, Faculty of Technical Sciences, Department of Civil Engineering and Geodesy, Trg Dositeja Obradovica 6, 21000 Novi Sad, Republic of Serbia
Anka Starčev-Ćurčin
; University of Novi Sad, Faculty of Technical Sciences, Department of Civil Engineering and Geodesy, Trg Dositeja Obradovica 6, 21000 Novi Sad, Republic of Serbia
Igor Peško
; University of Novi Sad, Faculty of Technical Sciences, Department of Civil Engineering and Geodesy, Trg Dositeja Obradovica 6, 21000 Novi Sad, Republic of Serbia
Slobodan Kolaković
; University of Novi Sad, Faculty of Technical Sciences, Department of Civil Engineering and Geodesy, Trg Dositeja Obradovica 6, 21000 Novi Sad, Republic of Serbia
Sažetak
The paper deals with the influence of temperature changes on concrete pavement. Due to differences in temperature on the upper and the lower surface of a concrete slab, the bending stress is created, resulting in concrete slab deformation. During the process of heating, the difference in temperature between the upper and the lower surface of pavement is created as a result of heat conduction. The upper surface has a tendency to expand (tense), whereas the lower one does not alter its dimensions, which results in generating the bending stress. Concrete pavement is most commonly placed in zones with extremely heavy traffic load as well as at bus stops. The analysis was carried out at bus stops in the city of Novi Sad for three different types of slab thickness. The thickness of slabs was 20, 22 and 24 cm. The testing was conducted in the longitudinal and transverse direction of the concrete pavement, both in the middle and on the edge of a slab. During the analysis of results, a conclusion was drawn that the concrete slabs were of different dimensions and thickness, and that they were placed on different subgrade reactions. The maximum values of stress were recorded in the middle of a concrete slab, in slabs whose thickness amounted to 24 cm, while the minimum stresses were identified in slabs which were 20 cm thick. The paper presents the stresses of concrete slabs, caused by changes in temperature, which depend on the subgrade reaction and dimensions of concrete slabs.
Ključne riječi
concrete pavement; stresses; temperature changes
Hrčak ID:
248251
URI
Datum izdavanja:
19.12.2020.
Posjeta: 1.025 *