| Title | Cement Mortars Based on Polyamide Waste Modified with Fly Ash from Biomass Combustion-A New Material for Sustainable Construction |
|---|---|
| ID_Doc | 25257 |
| Authors | Ulewicz, M; Jura, J; Gnatowski, A |
| Title | Cement Mortars Based on Polyamide Waste Modified with Fly Ash from Biomass Combustion-A New Material for Sustainable Construction |
| Year | 2024 |
| Published | Sustainability, 16, 7 |
| Abstract | The article presents an analysis of the possibility of using the waste of polyamide 6 modified with fly ash (in the amount of 5, 10 and 15%) from the burning of wood-palm kernel shells biomass as an addition to cement mortar. Fly ash from the burning of biomass in a circulating fluidized bed boiler (which currently has no practical use) was first used to produce polyamide 6, and then post-production polymer waste (added at 20, 40 and 60%) was used to produce ecological mortar. The use of this type of waste is both economically profitable and desirable due to the need to implement waste material management processes in a closed circuit. The addition of polyamide 6 waste containing 5% fly ash in amounts of 20 and 40% and waste containing 10% ash in 20% to cement mortars improves their mechanical properties. The compressive strength of cement mortars (after 28 days of maturation) containing 20 and 40% of polyamide waste containing 5% fly ash increases by 6.6 and 4.6%, respectively, and the flexural strength by 4.9 and 3.4% compared to the control mortars. However, the compressive strength of mortars with the addition of 20% polyamide waste containing 10% fly ash increases by 4.2% and the flexural strength by 3.7%. Cement mortars modified with waste are characterized by slightly lower water absorption and mechanical strength after the freezing-thawing process (frost resistance) compared to control mortars and do not have an adverse effect on the environment in terms of leaching metal ions. |
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