Effect of Polypropylene Fibers on Development of Fresh and Hardened Properties of Recycled Self-compacting Concrete
Mounir M. Kamal1, Mohamed A. Safan2, Zeinab A. Etman3, Mahmoud A. Abd-elbaki4
1Prof. Mounir M. Kamal,  Department of Civil Engineering, Faculty of Engineering, Menoufia University, Egypt.
2Prof. Mohamed A. Safan,   Department of Civil Engineering,  Menoufia University, Egypt.
3Zeinab A. Etman, Department of Civil Engineering, Faculty of Engineering, Menoufia University, Egypt.
4Mahmoud A. Abd-elbaki, Civil Engineer and Postgraduate Fellow.
Manuscript received on May 15, 2013. | Revised Manuscript received on June 22, 2013. | Manuscript published on June 30, 2013. | PP: 86-93 | Volume-2, Issue-5, June 2013. | Retrieval Number: E1711062513/2013©BEIESP

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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: The current research intends to study the possibility of producing fiber recycled self-compacting concrete (FRSCC) using demolitions as a coarse aggregate (crushed red brick and crushed ceramic). Polypropylene fibers were used in recycled self compacting concrete (RSCC) to improve fresh and hardened properties of this type of concrete. Thirty one concrete mixes were prepared to achieve the aim proposed in this paper. Polypropylene fiber volume fraction varied from 0 to 1.5% of the volume of concrete with aspect ratio 12.5. The fresh properties of FRSCC were evaluated using slump flow, J-ring and V-funnel tests. Compressive strength, tensile strength, flexural strength tests were performed in order to investigate mechanical properties. Density was performed to investigate the physical properties The results cleared that; the optimum volume fraction of polypropylene fibers was 0.19% and 0.75% for the mixes contained crushed red break and ceramic as a coarse aggregate, respectively. At optimum volume fraction of polypropylene fibers; the mixes with 25, 50, 75 and 100% of crushed ceramic yields to improve in the compressive strength by 18.4, 26.3, 21.2 and 14.8%, respectively compared to the mixes with crushed red brick as a recycled aggregate was observed.
Keywords: Self-compacted concrete, Red brick, Ceramic, Recycled materials, Polypropylene fibers.