Physical properties of post-process fly ash from TWTP Krakow
Authors:
- Aneta Nowak-Michta,
- Brygida Kabat
Abstract
Fly ashes from eco-incinerator according to the Art.7 of the Act of December 14, 2012 on waste are a hazardous waste. The growing amount of this type of waste generates a problem in terms of their management. They are a post-process waste, so their chemical composition is not constant and their quality is not very high. In addition, a high content of heavy metals with different concentrations may adversely affect the properties of these ashes. The physical properties of fly ashes originating from the TWTP in Krakow in the light of the requirements of PN-EN 450-1 are analysed in the article. The aim of the paper is a preliminary assessment, based on the tests carried out on three random ashes, to check if there’s a possibility of utilisation of this type of waste in concretes. The results of physical properties examination showed that they are coarse ashes with a several percent moisture content. They meet the requirements of PN-EN 450-1 in terms of the impact on the initial setting time and soundness. They cause an increase in the mortar's water demand. Their compression activity index after 28 days is 63-70%, and after 90 days 56-67% and do not meet the standard requirements (75% after 28 days and 85% after 90 days).
- Record ID
- CUT9f33de96b5ba4890be0b2c4ec0548a55
- Publication categories
- ; ;
- Author
- Pages
- [111-117]
- Other elements of collation
- tab.; wykr.; Bibliografia (liczba pozycji) - 14; Oznaczenie streszczenia - Abstr.
- Book
- Hager I., I. Hager Tracz T. T. Tracz (eds.): MATBUD’2018 : 8th Scientific-Technical Conference on Material Problems in Civil Engineering, Cracow, Poland, 25-27 June, 2018 : [proceedings], MATEC Web of Conferences, no. 163, 2018, [S.l.], EDP Sciences, VII, [440] p., ISBN 978-2-7598-9052-1
- Keywords in English
- activity index, chemical compositions, hazardous wastes, initial setting time, preliminary assessment, standard requirements, waste in concretes, water demand
- DOI
- DOI:10.1051/matecconf/201816303004 Opening in a new tab
- URL
- https://www.matec-conferences.org/articles/matecconf/abs/2018/22/matecconf_matbud2018_03004/matecconf_matbud2018_03004.html Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 5
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT9f33de96b5ba4890be0b2c4ec0548a55/
- URN
urn:pkr-prod:CUT9f33de96b5ba4890be0b2c4ec0548a55
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.