What is it about?
Developments in polymer technology have introduced new choices such as using fibers and fiber-reinforced polymers (FRP) to improve the impact behavior of concrete structures. In this research, 52 concrete samples (half of which wrapped with glass fiber-reinforced polymers-GFRP) with different compressive strengths (20, 30, and 40 MPa) and polypropylene fibers were constructed. These samples were subjected to weight dropping (46.7 kg and 66.8 kg). The number of weight droppings related to 30% weight loss was recorded. Results indicated that the impact resistance of the concrete samples, corresponding to the number of weight droppings, increased using higher-strength concrete, higher polypropylene ratios, or GFRP wrapping, separately and in application with each other. However, the effects of GFRP wrapping on the improvement of the impact resistance much higher than those of the polypropylene fibers or concrete strength.
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Why is it important?
In this study the impact resistance of fiber-reinforced concrete (FRC) Specimens with polypropylene (PP) fibers and GFRP wrapping under axial impact loading was studied. The effects of the PP fibers and GFRP wrapping were compared to each other to propose the optimum method to improve the impact behavior of the specimens.
Perspectives
Writing this article was a great pleasure as it has co-authors with whom I have had long standing collaborations. This article also ended up finding interesting conclusions regarding the methods of impact resistance of concrete specimens.
Dr. Hamed Arshadi
Semnan University of Medical Sciences and Health Services
Read the Original
This page is a summary of: The impact resistance of Fiber-Reinforced concrete with polypropylene fibers and GFRP wrapping, Materials Today Proceedings, February 2021, Elsevier,
DOI: 10.1016/j.matpr.2021.02.116.
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