Naslov
Punching of Slabs Reinforced With Recycled Fibres From Used Tyres

Autori
Bartolac, Marko ; Damjanović, Domagoj ; Krolo, Joško ; Duvnjak, Ivan ; Baričević, Ana

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

Izvornik
The 9th International Concrete Conference 2016: Environment, Efficiency and Economic Challenges for Concrete / Jones, M. Roderick ; Newlands, Moray D. ; Halliday, Judith E. ; Csetenyi, Laszlo J. ; Zheng, Li ; McCarthy, Michael J. ; Dyer, Thomas D. - Dundee : University of Dundee – Concrete Technology Unit, 2016, 600-612

ISBN
978-0-9573263-1-6

Skup
The 9th International Concrete Conference 2016

Mjesto i datum
Dundee, Ujedinjeno Kraljevstvo, 04.07.2016. - 06.07.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Fibre Reinforced Concrete; Flat Slab; Punching Shear; Recycled Tyres; Experimental Investigation

Sažetak
The increasing number of used tyres and their landfilling present a worldwide problem. Currently, in number of countries, there are directives that prohibit landfilling of complete tires and imply that they must be disintegrated and their constituent materials recycled. Thus, the research community is trying to find applications for reuse of these materials. Main objectives of all researches imply engineering, ecological and economical benefits of newly found applications. This paper presents an effort to find a new application for sorted recycled tyre steel fibres. Namely, usage of these fibres as reinforcement in concrete slabs loaded in punching has been investigated. The ultimate strength of flat slab system is often governed by the slab’s punching shear capacity. Punching of a slab in a building is a rather brittle phenomenon that can lead to progressive collapses of neighbouring slab – column connections. Finally, this domino effect can cause collapse of the entire structure. Punching shear capacity of slabs is traditionally increased by reinforcement in form of stirrups or headed shear studs. In addition to these methods, industrially manufactured steel fibres have proved to be an effective alternative because of their positive effect on punching load and deformation capacity of elements concerned. Having this in mind, the main objective of the presented research was to test the ability of sorted recycled steel fibres to perform in the same way as industrial steel fibres. Research included investigation of reinforced concrete slabs made of several mixes including plain concrete, mix with industrial steel fibres and mixes with industrial and recycled steel fibres – hybrid fibres. Obtained results indicate that the usage of hybrid fibres can improve the punching strength and deformation capacity of concrete slabs. Furthermore, slabs reinforced with hybrid fibres showed better behaviour when compared to slabs reinforced only with industrial steel fibres.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

Napomena
FP7 project Anagennisi - Innovative Reuse of All Tyre Components in Concrete (Grant no. 603722)

POVEZANOST RADA