| AAE | Average absolute error |
| DIC | Digital imagine collection |
| FRP | Fiber-reinforced polymer |
| GFRP | Glass fiber-reinforced polymer |
| HSG | Hooped strain gauge |
| ITZ | Interfacial transition zone |
| LSG | Longitudinal strain gauge |
| MSE | Mean square error |
| NAC | Natural aggregate concrete |
| NCA | Natural coarse aggregates |
| OPC | Ordinary Portland cement |
| RAC | Recycled aggregate concrete |
| RFA | Recycled FRP aggregates |
| RFAC | Recycled FRP aggregates concrete |
| RGFA | Recycled GFRP aggregates |
| SD | Standard deviation |
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