A comparative experimental investigation of concrete,reinforced-concrete and steel-fibre concrete pipes under three-edge-bearing test |
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Affiliation: | Department of Civil Engineering, Faculty of Engineering, Erciyes University, 38039 Kayseri, Turkey |
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Abstract: | Three-edge-bearing and crack size measurement tests were carried out on plain concrete, reinforced-concrete, and steel-fibre concrete pipes of 500 mm diameters. The average three-edge-bearing strength and crack size of steel-fibre concrete pipes having steel fibres of RC80/60-BN type at a dosage of 25 kg/m3 turned out to be 82% greater and 47% smaller than those of plain concrete pipes, and 6% greater and 15% smaller than those of reinforced-concrete pipes, respectively. Tests on those steel-fibre concrete pipes having a steel fibres dosage of 40 kg/m3 revealed that a steel fibres dosage of 25 kg/m3 seems to be close to optimum because a 60% increase in the amount of steel fibres engenders only minor improvements. By these findings, steel-fibre concrete pipes are more economical than and mechanically and physically superior to reinforced-concrete pipes. |
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