ASSESSING THE BEHAVIOUR OF CONCRETE REINFORCED WITH DIFFERENT POLYPROPYLENE FIBER TYPES | ||
| ERJ. Engineering Research Journal | ||
| Article 12, Volume 36, Issue 3, July 2013, Pages 339-349 PDF (3.02 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/erjm.2013.67435 | ||
| Author | ||
| a M. I Abu-Khashab | ||
| Construction Research Institute, Delta Barrages, Egypt | ||
| Abstract | ||
| This research was initiated with the objective of evaluating the effect of different polypropylene fibers on the mechanical characteristics of the concrete, experimentally. This was achieved by examining the effectiveness of fiber addition in order to improve the concrete mechanical behavior. Five types of polypropylene fiber (PPF) were investigated to select an appropriate fiber to be added to the concrete mixture based on its purpose. A concrete mixture was designed and its different mechanical characteristics were examined. Specimens were tested after curing (i.e. after 7 and 28 days). Durability tests (i.e. abrasion, plastic/drying shrinkage and temperature differences exposure) were investigated. The results indicated that using PPF, randomly, helps to bridge and arrest the formed cracks in the concrete under different stresses such as that resulted from temperature differences exposure. Most of the tested PPF added to the concrete mixes proved its efficiency in improving the concrete abrasion resistance, controlling plastic so as drying shrinkage cracking as well as reducing it and enhancing its distribution along the concrete surface. Using PPF-1/PPF-2 could improve the abrasion resistance up to 35%. Also, the plastic shrinkage strain is minimized by 32% to 61% compared to its original value. | ||
| Keywords | ||
| Polypropylene Fibers (PPF); inclusion; Durability; Abrasion; Plastic; Drying; Shrinkage; resistance; Cracking; Tensile Properties, | ||
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