TY - JOUR ID - TI - Effect of adding depolymerized polyethylene terephthalate waste on the acoustic insulation and hardness properties of Iraqi cement mortar AU - Sarmad Imad Ibrahim AU - Mohammed Alzuhairi AU - Sarmad Imad Ibrahim PY - 2022 VL - 2 IS - 2 SP - 38 EP - 47 JO - Iraqi Journal of Oil and Gas Research المجلة العراقية لبحوث النفط والغاز SN - 27102939 27902137 AB - In this study, depolymerized Polyethylene terephthalate waste (DPET) particles were prepared by bubble column reactor adding ethylene glycol as a solvent and Nano MgO (65nm) as a catalyst and then using DPET particles to modify the cement mortar composite by partial replacement of sand. The mechanical hardness test, the physical ultrasonic pulse velocity (UPV) test and the acoustic insulation test of the modified cement mortar composite have been studied. DPET particles were used with four percentages of (1%wt, 3%wt, 6%wt and, 9%wt) of sand for each one of them. All tests were done for 28 days of curing. The cement mortar composite was prepared using water/cement ratio of (0.48) while sand-to-cement material ratio of (1:2.75) (2.75 parts of sand and 1 part of cement). The findings showed that there was no clear influence of DPET on the hardness of the cement mortar composite, where the hardness of mixture with 3% DPET equal to that of mixture with no DPET was (91.7 shore A), while the hardness of other mixtures with (1, 6 and 9)% PET were (91.6, 91.2 and 90.8 shore A) respectively. While the UPV of the modified cement mortar composite decrease with increase the amount of DPET particles, where the drops in UPV were (-2.98%) at 9% of DPET particles. The acoustic insulation of the modified cement mortar composite increase as the DPET increases in all frequencies that were used. This is indicate that DPET particles which that made through depolymerized the PET of waste water bottles can enhancement the physical and insulating properties of the cement mortar. The findings concluded that, the using of waste materials after apply treatment process on it such as de-polymerization is better than using it directly.

ER -