Flexural Behaviour of Precast Steel Fibres Reinforces Concrete Composite Slabs with Different Shapes
- 20 August 2020
- journal article
- research article
- Published by International Information and Engineering Technology Association in Annales de Chimie - Science Des Matériaux
- Vol. 44 (3), 199-209
- https://doi.org/10.18280/acsm.440307
Abstract
This paper aims to disclose the flexural behaviours of concrete composite slabs (CCSs) with different materials and shapes. For this purpose, eight types of CCSs were prepared with three kinds of materials (i.e. natural concrete, steel fibre-reinforced slit ceramic aggregate concrete (SFRSCAC) and steel fibre-reinforced recycled aggregate concrete (SFRRAC)) and five different shapes (i.e. rough surface, rectangular-rib, cross-rib, bar truss and bar truss with rectangular-rib). Thus, eight full-size CCS were established and subjected to static load tests. Then, the load-deflection curves, load-rebar strain curves, load-concrete strain curves and strain-depth relationship were analysed in details. Finally, the calculation methods were proposed for the cracking and ultimate bending moments of the CCS. The results show that: (i) under the vertical load, the eight specimens shared similar flexural behaviours and all underwent the elastic phase, elastic-plastic phase and failure phase; (ii) the crack resistance of both SFRSCAC and SFRRAC were greatly improved through the addition of steel fibres; (iii) the shape of the bottom plate has a major impact on the flexural performance of the CCS, especially in the elastic-plastic phase and the failure phase; (iv) the effect of the bottom plate should be considered in the calculation of the cracking moment, and the contribution of steel fibres to the tensile zone should be taken into account for the calculation of ultimate bending moments of the CCSs fabricated by SFRSCAC or SFRRAC.Keywords
This publication has 15 references indexed in Scilit:
- Mechanical behavior of concrete-filled square steel tube with FRP-confined concrete core subjected to axial compressionComposite Structures, 2015
- Flexural performance of a precast concrete slab with steel fiber concrete toppingConstruction and Building Materials, 2015
- Recycled aggregate concrete – Mechanical behavior under uniaxial and triaxial compressionConstruction and Building Materials, 2014
- Compressive stress–strain behavior of steel fiber reinforced-recycled aggregate concreteCement and Concrete Composites, 2014
- Failure Mode and Ultimate Bearing Capacity of Precast Ribbed Panels Used for Concrete Composite SlabsAdvances in Structural Engineering, 2013
- Influence of recycled coarse aggregates on the bond behavior of deformed bars in concreteEngineering Structures, 2013
- Offsite production: a model for building down barriersEngineering, Construction and Architectural Management, 2011
- Structural behaviour of ferrocement–brick composite floor slab panelConstruction and Building Materials, 2010
- Experimental and finite element analysis on the steel fiber-reinforced concrete (SFRC) beams ultimate behaviorConstruction and Building Materials, 2009
- Tests and analysis on shear strength of composite slabs of hollow core units and concrete toppingConstruction and Building Materials, 2008