Impact Resistance of Concrete with Recycled Steel Fibers and Crumb Rubber. | ||||
| MEJ- Mansoura Engineering Journal | ||||
| Article 17, Volume 46, Issue 2, June 2021, Page 58-69 PDF (1.2 MB) | ||||
| Document Type: Research Studies | ||||
| DOI: 10.21608/bfemu.2021.180607 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Khaled Mohamed Elsayed1; mohamed hussien Makhlouf,2; Manar Adly Ali  3
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| 1Department of Civil Engineering, Benha Faculty of Engineering, Benha University, Egypt | ||||
| 2Assistant Prof., Department of Civil Engineering, Benha Faculty of Engineering, Benha University, Egypt | ||||
| 3New Banha Banha | ||||
| Abstract | ||||
| Concrete with waste steel fibers and crumb rubber (WSFCR) was primarily created using components that are extracted from the scrap tires recycling process. Crumb rubber particles of size (1- 4) mm and relative density 1.0 gm/cm3 were included as a partial replacement (10% by volume) of natural sand. Recycled or waste steel fibers were used in four percentages from the total mass of the concrete (0.5%, 1.0%, 1.5%, and 2.0%). The efficiency of WSFCR has primarily been studied to evaluate its performance against impact loads, compared to the performance of traditional concrete (CR 0), rubber concrete (CR 10%), and rubber concrete reinforced with industrial steel fibers (ISFCR). Also, the influence of recycled steel fibers on the different strengths of the rubberized concrete was presented. A total number of eleven slabs (1000×1000×100 mm) were subjected to 10.738 Kg cylindrical steel weight falling from a 1.5 m distance concerning the number of blows at the first crack formation and complete failure. Both WSFCR and ISFCR showed outstanding performance under impact loads compared to CR0 and CR 10% control mixtures. Although ISFCR resulted in a higher impact energy resistance than WSFCR, which showed convergent results and a similar crack pattern; therefore, it is a strong candidate as a low-cost alternative to industrial steel fibers. | ||||
| Keywords | ||||
| Waste steel fibers; Industrial steel fibers; Rubber concrete; Drop weight test; Impact load | ||||
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