Naslov
Punching Shear Strength of Concrete Slabs Reinforced with Recycled Steel fibres from Waste Tyres

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

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

Izvornik
Proceedings of the Second International Conference on Concrete Sustainability / Galvez, Jaime C. ; Aguado de Cea, Antonio ; Fernandez-Ordonez, David ; Sakai, Koji ; Reyes, Encarnacion ; Casati, Maria J. ; Enfedaque, Alejandro ; Alberti, Marcos G. ; de la Fuente, Albert - Madrid : International Center for Numerical Methods in Engineering (CIMNE), 2016, 811-821

ISBN
978-84-9450777-8-6

Skup
Second International Conference on Concrete Sustainability

Mjesto i datum
Madrid, Španjolska, 13.06.2016. - 15.06.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Fibre Reinforced Concrete; Flat Slab; Punching Shear; Recycled Tires; Steel Fibres; Experimental Investigation

Sažetak
The increasing amount of waste tires around the world and their landfilling present a continuous problem to be solved. Currently, in some countries and unions of countries there are directives which prohibit landfilling and imply that constituent materials of waste tires must be recycled. So, the research community is continuously trying to find different ways to reuse these materials and solve this environmental problem. The main goals of these researches presume engineering, ecological and economical benefits of newly found applications of waste tires rubber, steel fibres and textile fibres. This paper presents the investigation on bearing behaviour of concrete flat slabs reinforced with recycled steel fibres from waste tyres loaded with punching shear force. The ultimate strength of flat slabs is very often governed by their punching shear capacity. This failure mode is rather brittle and can lead to progressive collapses of slab – column connections which can cause collapse of the entire structure. This capacity is traditionally increased by reinforcement in form of stirrups, shear studs or shear bands for example. In addition to these methods of strengthening against punching, industrial steel fibres have proved to be an effective alternative because of their positive effect on shear behaviour and deformation capacity of elements concerned. The main goal of the presented research was to test the ability of recycled steel fibres to perform in the same way as industrial steel fibres in flat slabs loaded in punching. Research included investigation of behaviour 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. A total of fifteen small-scale flat slabs were tested and results indicate that the use of hybrid fibres can improve the punching shear 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

POVEZANOST RADA