Abstract
This study investigates the feasibility of the application of ultrasonic measurement to characterize Steel-Fiber-Reinforced Concrete (SFRC). Specifically, the effects of steel fiber content, age, moisture content, and fiber orientation on Ultrasonic-Pulse-Velocity (UPV) were investigated. In this regard, beam and cylindrical samples were fabricated with different steel fiber contents. The result indicated that for beam specimens the UPV increases with the addition of fiber up to 2% and decreases for higher fiber percentages. Additionally, the fiber orientation within the beam specimens influences the UPV measurements. For cylindrical samples, the rate of UPV decreased with the addition of steel fiber reinforcement. In addition, it was discovered that the curing period affects the magnitude of UPV.
Highlights
Concrete is used extensively in most construction projects because its constituent materials are locally available
The main objective of this study is to investigate the response of ultrasonic pulse velocity through steel fiber reinforced Self-Compacted Concrete (SCC) with respect to the volume fraction of steel fibers, curing periods (7, 28, and 90 days), steel fiber and aggregate orientations, and wet/dry conditions
An ultrasonic survey was carried out on cylindrical and beam samples reinforced with various content percentages of steel fibers
Summary
Concrete is used extensively in most construction projects because its constituent materials are locally available. Improving the ductility of concrete is very important, especially due to the fact that concrete structures may experience extreme loadings during their lifetime [11,12,13,14]. To address such a deficiency, a continuous reinforcing bar has been applied to resist the tensile force imposed on the structure [15,16,17,18]. The addition of steel fibers in concrete can improve its toughness [14, 25,26,27,28,29,30,31,32,33,34,35,36,37,38], ductility, and post-crack resistance [29]
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