Naslov
Case study of tunnel St Elijah repair after concrete tunnel lining damaged by fire

Autori
Mavar, Krunoslav ; Marušić, Elica ; Dragović, Tin

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

Izvornik
Durability of concrete structures, Proceedings of the 8th Central European Congresses on Concrete Engineering, CCC 2012 / Jure Radić, Marija Kušter - Zagreb : SECON - CSSE, 2012, 157-162

ISBN
978-953-7621-14-8

Skup
Durability of Concrete Structures, 8th Central European Congresses on Concrete Engineering, CCC 2012

Mjesto i datum
NP Plitvička jezera, Hrvatska, 04.10.2012. - 06.10.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Tunelska oplata; požar; pregled i ispitivanje; ocjena stanja; popravak
(Concrete tunnel lining; fire exposing; inspection & testing; condition assessment; repair design)

Sažetak
In this paper a case study of Tunnel St Elijah through mountain Biokovo will be presented. Its secondary concrete tunnel lining was exposed to high temperature when formwork caught fire. Concrete was 10-16 hours old. The first performed visual inspection revealed different coloration on area caught in a fire. By visual inspection, the positions for in-situ testing and cores drilling for laboratory testing were determined. Those included the following: determination of compression strength and density on samples from sound and discolored concrete and comparison of values, determination of adhesive strength by pull off testing on sound areas and discolored areas, difference between Schmidt hammer test results, determination of loss on ignition to establish if decomposition of C-S-H gel occurred. Test results, condition assessment and repair methods will be presented.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA