Original scientific paper

https://doi.org/10.17559/TV-20150901095705

Use of incinerated sewage sludge ash in cement mortars: case study in Croatia

Dražen Vouk ; University of Zagreb, Faculty of Civil Engineering, Water Research Department, Kaciceva 26, 10000 Zagreb, Croatia
Marijana Serdar ; University of Zagreb, Faculty of Civil Engineering, Department of Materials, Kaciceva 26, 10000 Zagreb, Croatia
Aleksandra Anić Vučinić orcid.org/0000-0001-9257-0198 ; University of Zagreb, Faculty of Geotechnical Engineering, Department for Environmental Engineering, Hallerova aleja 7, 42000 Varaždin, Croatia

Abstract

In the paper an experimental research has been carried out regarding the possibility for the use of incinerated sewage sludge ash (ISSA) in the production of cement mortars with partial cement replacement. Different mixtures of cement mortar have been investigated, with comparison of its basic characteristics with and without certain amounts of added ISSA that was incinerated at the temperature of 800 °C. Additionally, the influence of the additives (metakaolin and silicon dust) was also investigated with the purpose to improve the physical characteristics of mortars. Altogether 177 specimens of cement mortar were investigated, with 9 different mixtures. In this research the sewage sludge from the Zagreb wastewater treatment plant was used. Results have shown satisfying physical and mechanical characteristics of mortars with added ISSA (workability, setting time, flexural and compressive strength) which brings to conclusion that use of ISSA in production of cement mortars seems possible and justified.

Keywords

cement mortar; incineration; ISSA; sewage sludge; wastewater

Hrčak ID:

174699

URI

https://hrcak.srce.hr/174699

Publication date:

10.2.2017.

Article data in other languages: croatian

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