Extending the life cycle of cement binders by partially replacing Portland cement with different types fluidized bed combustion fly ash
Authors:
- Artur Łagosz,
- Tomasz Tracz,
- Radosław Mróz
Abstract
A significant reduction in the CO2 emission associated with cement production is obtained by partially replacing Portland cement with supplementary cementing materials (SCM’s): e.g., siliceous fly ash or granulated blast furnace slag. In the near future, the limited availability of these materials will do more attractive to use ashes from combustion in fluidized bed boilers, which currently are mainly deposited in various landfills. Paper identifies the effect of Fluidized Bed Combustion (FBC) fly ash from both hard and brown coal combustion on the durability of mortars exposed to sodium and magnesium sulfate solution at different curing temperature: 20 and 5 ◦C. The evaluation was based on the results of long-term linear changes of mortar samples made with Portland cement and different amounts of FBC fly ash addition stored in a corrosive environment, as well as the evaluation of the type of formed corrosion products using XRD and microstructural studies (SEM/EDS). It has been shown that amount of FBC fly ashes used in binders significantly determines sulfate resistance of prepared cements as well as its chemical composition. By using fluidized ashes, the sulfate resistance of cement binders can be achieved with their content even of 15%.
- Record ID
- CUT8382673360e44d8398e9a2bb73780705
- Publication categories
- ;
- Author
- Journal series
- Minerals, ISSN , e-ISSN 2075-163X, Monthly
- Issue year
- 2021
- Vol
- 11
- No
- 7
- Pages
- [1-15]
- Article number
- 690
- Other elements of collation
- fot.; tab.; wykr.; Bibliografia (na s.) - 14-15; Bibliografia (liczba pozycji) - 35; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 11, Iss. 7, Spec. Iss.
- Substantive notes
- Special Issue: Fluidized Bed Combustion (FBC) Fly Ashes—Characteristics and Use
- Keywords in English
- blended cement, FBC fly ash, durability of blended cements, cement, concrete, sulfhate resistance, ettringite, thaumasite
- DOI
- DOI:10.3390/min11070690 Opening in a new tab
- URL
- https://www.mdpi.com/2075-163X/11/7/690 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 100
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT8382673360e44d8398e9a2bb73780705/
- URN
urn:pkr-prod:CUT8382673360e44d8398e9a2bb73780705
* 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.