Portland cement used in the manufacture of concrete is responsible for an estimated 5–8% of the global CO2 emissions. Recently published work (Schaefer et al., 2018) claims that γ-irradiated PET waste powder can be used as a partial replacement of cement in concrete for reducing its CO2 footprint. More specifically, exposure of PET to γ-irradiation at a dosage of 100 kGy alters its crystal structure and chemical composition, which in turn leads to a smaller reduction in concrete strength compared to non-irradiated PET waste. Hence, making it possible for irradiated PET waste to be used as a raw ingredient in the manufacture of concrete while at the same time diverting significant quantities of PET waste from landfills. The aim of this research was to independently assess and verify the above claims. Our results indicate that use of γ-irradiated PET waste (exposed to an irradiation dosage of up to 100 kGy) for partially replacing cementdoes not lead to a significant recovery of mechanical strength lost when non-irradiated PET waste is used.
GRIGORIADIS Konstantinos;
BAÑULS CISCAR Jorge;
CAVERZAN Alessio;
NEGRO Paolo;
SENALDI Chiara;
CECCONE Giacomo;
2023-09-04
PERGAMON-ELSEVIER SCIENCE LTD
JRC132818
0956-053X (online),
https://www.sciencedirect.com/science/article/pii/S0956053X23005202,
https://publications.jrc.ec.europa.eu/repository/handle/JRC132818,
10.1016/j.wasman.2023.08.012 (online),
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