Research Article
A Study on the Flexural Behaviour of Geopolymer Lightweight Eco-Friendly Concrete Using Coconut Shell as Coarse Aggregate
Table 8
Deflection at service stage and ultimate stage.
| Beam ID | Service stage | Ultimate stage | Ductility index | Load (kN) | Displacement | Load (kN) | Displacement | (ΔU)/(ΔY) | (Δy) (mm) | (Δu) (mm) |
| Singly reinforcement beam | GPCSC-S1 | 18.67 | 7.56 | 28 | 16.82 | 2.22 | GPCSC-S2 | 25.33 | 9.02 | 38 | 18.99 | 2.11 | GPCSC-S3 | 36.00 | 10.67 | 54 | 28.99 | 2.72 | GPCC-S1 | 20.00 | 3.21 | 30 | 11.23 | 3.50 | GPCC-S2 | 26.67 | 3.45 | 40 | 12.34 | 3.58 | GPCC-S3 | 38.67 | 7.89 | 58 | 25.99 | 3.29 |
| Doubly reinforcement beam | GPCSC-D1 | 54.67 | 10.45 | 82 | 29.45 | 2.82 | GPCSC-D2 | 88.00 | 15.67 | 132 | 43.44 | 2.77 | GPCSC-D3 | 102.67 | 18.56 | 154 | 53.45 | 2.88 | GPCC-D1 | 56.00 | 7.11 | 84 | 25.22 | 3.55 | GPCC-D2 | 90.67 | 9.99 | 136 | 35.45 | 3.55 | GPCC-D3 | 108.00 | 15.66 | 162 | 45.45 | 2.90 |
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