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Self-Compacting Fiber Reinforced Concrete for Precast Industry

Paulo A. L. Fernandes 1, João Veludo 2, Hugo Rodrigues 3, Nuno Almeida 2, and João Baptista 2
1. Department of Civil Engineering, CERIS, Polytechnic Institute of Leiria, Leiria, Portugal
2. CERIS; +Polytechnic Institute of Leiria/ Department of Civil Engineering, Leiria, Portugal
3. RISCO; Polytechnic Institute of Leiria/ Department of Civil Engineering, Leiria, Portugal
Abstract—The Self-Compacting Fiber Reinforced Concrete (SCFRC) is a composite cementitious matrix, with an added amount of discrete fibers. The increase in tensile strength, the inherent ability to control cracking and the consequent increase of the absorbed energy are the main properties benefited from the introduction of fibers. Regarding the consistency of the concrete, there is a decrease in its workability with the increased addition of fibers. Given this problem and due to the need to build lighter, slenderer elements and still meet the precast industry requirements, in particular its production cycles, it is required the use of a self-compacting concrete. This paper describes an experimental study to obtain a self-compacting fiber reinforced concrete formulation, suitable to develop new solutions of non-structural precast elements in buildings.
The work focused on studying the influence of several parameters on fresh and hardened SCFRC properties. Based on Faury’s reference curve various mixtures have been developed, , with a water / cement ratio ranging from 0,30 to 0,35. In all mixtures, the dosage of steel fibers and the volume of cement remained constant.
For all the compositions, the slump flow and the compression strength were evaluated and analyzed.
 
Index Terms— Self-compacting concrete, fiber reinforced concrete, precast

Cite: Paulo A. L. Fernandes, João Veludo, Hugo Rodrigues, Nuno Almeida, and João Baptista, "Self-Compacting Fiber Reinforced Concrete for Precast Industry," International Journal of Structural and Civil Engineering Research, Vol. 7, No. 3, pp. 189-193, August 2018. doi: 10.18178/ijscer.7.3.189-193
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