PSI - Issue 60

Swathy S et al. / Procedia Structural Integrity 60 (2024) 591–603 Swathy S et al./ Structural Integrity Procedia 00 (2019) 000 – 000

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2. Load carrying capacity of Basalt strip strengthened slab was about 56.48% higher when compared to the load carrying capacity of the control slab without strengthening. This is due to the radial orientation of the laminate on both side of the slab that reduced the failure and increased the load carrying capacity. 3. Load carrying capacity of BFRP (Basalt fibre reinforced polymer) fan strengthened slab was about 43.54% higher than the control specimen and the drilled fan withstand the load to a greater extend over the impact loading. 4. Addition of polypropylene fibre to the slab reduced sudden failure of specimen when impact loading is applied. Crack pattern is 45-degree shear crack due to the application of impact loading and the crack has reduced for specimen strengthened with basalt laminate and BFRP fan when compared to the control slab. Reference [1] El- Salakawy EF, Polak MA, Soudki KA. (2003) ‘New strengthening technique for concrete slab– column connections.’ ACI Struct J 2003;100(3):297– 304. [2] El- Salakawy E, Soudki KA, Polak MA. (2004) ‘Punching shear behaviour s of flat slabs strengthened with fibre reinforced polymer laminates.’ J Compos Constr 2004;8(5):384– 92. [3] Micael M.G. Inácio, André F.O. Almeida, Duarte M.V. Faria, Válter J.G. Lúcio, António Pinho Ramos. (2015) ‘Punching of high strength concrete slab without shear reinforcement.’ Engineering structures 2015;09.010 2 75-284. [4] Navid Jafarian, Davood Mostofinejad, Ali Naderi. (2020) ‘Effects of FRP grids on Punching shear behaviour of reinforced concrete slabs 2020;10.016 2523-2536. [5] Hamed S. Askar. (2015) ‘Usage of prestressed vertical bolts for retrofitting Flat Slabs Damaged due to Punching Shear.’ Alexandria engineering journal 2015; 10 -1016-509. [6] Inácio M, Ramos A, Faria D. Strengthening of flat slabs with transverse reinforcement by introduction of steel bolts using different anchorage approaches. Eng Struct 2012; 44:63 – 77. [7] Hasan Meisami M, Davood Mostofinejad, Hikaru Nakamura. (2014) ‘Strengthening of flat slabs with FRP fan for punching shear.’ Composite Structures 119 (2015) 305– 314. [8] Hazem M.F. Elbakry, Said M. Allam. (2015) ‘Punching shear of Two - way slabs using external steel plates.’ Alexandria engineering journal 2015; 09.005 54. [9] Sohaib Naseer, Mamoon Riaz, Gaied Chortane Sana, Fahad Seemab . (2018) ‘Using P olypropylene fibre in concrete to achieve maximum strength.’ Eighth International Conference on Advances in Civil and Structural Engineering - CSE 2018 At: Malaysia. [10] Nadia Nassif, Salah Altoubat, M. Maalej, Pierre Estephane. (2020) ‘Punching Shear Str ength of Reinforced Concrete Flat Slabs with Macro Synthetic Fibres.’ IOP Conference Series Science and Engineering 856(1):012001. [11] Prasad Gowda. C, P. M. Ravindra .(2023) ‘Experimental Investigation Of Performance Assessment Of Flat Slabs Strengthened Using Basalt- Fibre Reinforced Polymers.’ Asian Journals of Civil Engineering 10.1007. [12] Meisami M, Mostofinejad D, Nakamura H. Strengthening of flat slabs with FRP fan for punching shear. Compos Struct 2015;119:305 – 14.