Fly ash from thermal transformation of sewage sludge as an alternative additive to concrete resistant to environmental influences

• Autorzy: Rutkowska Gabriela , Żółtowski Mariusz

Identyfikatory

DOI

10.17402/517

• Języki publikacji: EN

Abstrakty

EN

Concrete is currently the most widely used man-made composite material and second only to water in the entire range of materials used. It is a material with a high potential to adapt to specific operating conditions and can be made from local raw materials (aggregate, cement, water, and mineral additives), which can be selected to minimize the carbon footprint. The use of fly ash from the thermal conversion of sewage sludge in concrete is in accord with the advice on waste management proposed in the European Union. This paper presents the results of research on the effect of the partial replacement of Portland cement with this material on the strength parameters, frost resistance, and carbonation of concrete compared to reference concrete and to concrete containing a conventional additive – siliceous fly ash. In addition, the potential environmental impact of the use of sewage sludge ash was investigated by determining the leachability of heavy metals. Concrete mixtures of C20/25 ordinary concrete, based on CEM I 42.5R Portland cement, with varying ash contents comprising 0–20% of the cement mass, were produced for the experimental work. The obtained test results confirmed the possibility of producing plain concrete modified with fly ash from the thermal treatment of sewage sludge and the concrete’s compliance with the environmental requirements relating to the leaching of heavy metals.

Słowa kluczowe

EN

concrete; fly ash; sewage sludge; strength; frost resistance; heavy metals

• Wydawca: Wydawnictwo Naukowe Akademii Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Akademii Morskiej w Szczecinie
• Rocznik: 2022
• Tom: nr 71 (143)
• Strony: 48--55
• Opis fizyczny: Bibliogr. 41 poz., rys., tab.

Twórcy

autor

Rutkowska Gabriela

• Warsaw University of Life Sciences, Institute of Civil Engineering 166 Nowoursynowska Street, 02-787 Warsaw, Poland

• https://orcid.org/0000-0003-1047-6195

autor

Żółtowski Mariusz

• Warsaw University of Life Sciences, Institute of Civil Engineering 166 Nowoursynowska Street, 02-787 Warsaw, Poland

• https://orcid.org/0000-0003-0305-2378

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu „Społeczna odpowiedzialność nauki” - moduł: Popularyzacja nauki i promocja sportu (2022-2023).