| % of substitution | PET (g) | Laterite (g) | Cement (g) | Water (mL) | W/C | Number of brick |
| 3%PET | 788 | 25,492 | 2920 | 6015 | 2.06 | 3 |
| 5%PET | 1314 | 24,965 | 2920 | 6015 | 2.06 | 3 |
| 7%PET | 1814 | 24,465 | 2920 | 6015 | 2.06 | 3 |