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Advances in Materials Research Volume 10, Number 4, December 2021 , pages 267-281 DOI: https://doi.org/10.12989/amr.2021.10.4.267 |
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Effect of recycled polypropylene fiber on high strength concrete and normal strength concrete properties |
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Ahmed Touahri, Taieb Branci, Ammar Yahia and Karim Ezziane
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| Abstract | ||
| An experimental study was undertaken to evaluate the performance of recycled polypropylene fiber (RPF) in concrete. The RPF materials were recycled from woven bags and used in concrete at various volume fractions corresponding to 0.1%, 0.2%, and 0.3%. Two different classes of strength, corresponding to normal and high strength concrete, were investigated. Fiber was used as substitution of coarse aggregate in concrete. The dosage of fiber was used at relatively lower dosages to avoid altering fluidity and to limit the reduction in coarse aggregate content. On the other hand, a commercial polypropylene fiber (PPF) was used at equivalent dosages than RPF for comparisons purposes. Test results indicated that optimized RPF volumes can secure comparable mechanical performance than those obtained with commercial PPF. On the other hand, the use of both fiber types resulted in lower compressive strength (10 to 20%), higher flexural strength (up to 27%), and lower elastic modulus (by 16%). Furthermore, the use of RPF type reduced the drying shrinkage (6 to 10%) of normal and high strength concrete types and increased the permeable pore void of both concrete types. | ||
| Key Words | ||
| compressive strength; elastic modulus; flexural strength; high strength concrete; permeable pore void; recycled polypropylene fiber; shrinkage | ||
| Address | ||
| (1) Ahmed Touahri, Taieb Branci: Civil Engineering Department, University Hassiba BenBouali of Chlef, Algeria; (2) Ammar Yahia: Civil Engineering Department, University of Sherbrooke, Canada, J1K 2R1; (3) Karim Ezziane: Geomaterials Laboratory, University Hassiba BenBouali of Chlef, Algeria. | ||
