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Advances in Concrete Construction Volume 6, Number 5, October 2018 , pages 423-463 DOI: https://doi.org/10.12989/acc.2018.6.5.423 |
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Rehabilitation of normal and self-compacted steel fiber reinforced concrete corbels via basalt fiber |
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Mehmet Eren Gulsan, Mohammed S. Al Jawahery, Adnan H. Alshawaf, Twana A. Hussein, Khamees N. Abdulhaleem and Abdulkadir Cevik
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| Abstract | ||
| This paper investigates the behavior of normal and self-compacted steel fiber reinforced concrete (SCC-SFRC) corbels rehabilitated by Basalt Fiber Mesh (BFM) and Basalt Fiber Fabric (BFF) for the first time in literature. The research objective is to study the effectiveness of BFM and BFF in the rehabilitation of damaged reinforced concrete corbels with and without epoxy injection. The experimental program includes two types of concrete: normal concrete, and self-compacted concrete. For normal concrete, 12 corbels were rehabilitated by BFM without injection epoxy in cracks, with two values of compressive strength, three ratios of steel fiber (SF), and two values of shear span. For self-compacted concrete, 48 corbels were rehabilitated with different parameters where 12 corbels were rehabilitated by BFM with and without epoxy injection, 18 heated corbels with three different high-temperature level were rehabilitated by repairing cracks only by epoxy injection, and 18 heated corbels with three different high-temperature level were rehabilitated by repairing cracks by epoxy and wrapping by BFF. All 48 corbels have two values of compressive strength, three values volumetric ratios of SF, and two values of the shear span. Test results indicate that RC corbels rehabilitated by BFM only without injection did not show any increase in the ultimate load capacity. Moreover, For RC corbels that were repaired by epoxy without basalt wrapping, the ultimate load capacities showed an increase depending on the mode of failure of corbels before the rehabilitation. However, the rehabilitation with only crack repairing by epoxy injection is more effective on medium strength corbels as compared to high strength ones. Finally, it can be concluded that use of BFF is an effective and powerful technique for the strengthening of damaged RC corbels. | ||
| Key Words | ||
| corbels; Self-Compacted Concrete (SCC); Steel Fiber(SF); rehabilitation; Basalt Fiber Mesh (BFM); Basalt Fiber Fabric (BFF) | ||
| Address | ||
| Mehmet Eren Gulsan: Civil Engineering Department, Gaziantep University, Gaziantep, Turkey Mohammed S. Al Jawahery: Duhok Polytechnic University, Duhok, Iraq Adnan H. Alshawaf: Civil Engineering Department, Gaziantep University, Gaziantep, Turkey Twana A. Hussein: Civil Engineering Department, Gaziantep University, Gaziantep, Turkey Khamees N. Abdulhaleem: Civil Engineering Department, Kirkuk, Iraq Abdulkadir Cevik: Civil Engineering Department, Gaziantep University, Gaziantep, Turkey | ||
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