Mechanical strength and chloride ions’ penetration of alkali-activated concretes (AAC) with blended precursor
Authors:
- Patrycja Duży,
- Marta Choinska,
- Izabela Hager,
- Ouali Amiri,
- Jérôme Claverie
Abstract
The purpose of this study was to investigate the properties of hardened alkali-activated concrete, which is considered an eco-friendly alternative to Portland cement concrete. In this paper, the precursors for alkali-activated concrete preparations are blends of fly ash and ground-granulated blast-furnace slag in three slag proportions: 5%, 20%, and 35%, expressed as a percentage of fly ash mass. Thus, three concretes were designed and cast, denominated as AAC5, AAC20, and AAC35. Their physical and mechanical characteristics were investigated at 28 and 180 days, as well as their properties of chloride ion transport. The modified NT BUILD 492 migration test was applied to determine the chloride ions’ penetration of the alkali-activated concretes. Improvement of mechanical strength and resistance to chloride aggression was observed with ground-granulated blastfurnace slag content increase in the compositions of the tested concretes. Mercury intrusion porosimetry tests provided insight into the open pore structures of concretes. A significant decrease in the total pore volume of the concrete and a change in the nature of the pore diameter distribution due to the addition of ground granulated blast furnace slag were demonstrated.
- Record ID
- CUTc22a4ef292b14fdf8546d9378ccaf438
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2022
- Vol
- 15
- No
- 13
- Pages
- [1-14]
- Article number
- 4475
- Other elements of collation
- fot.; rys.; tab.; wykr.; Bibliografia (na s.) - 12-14; Bibliografia (liczba pozycji) - 60; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 15, Iss. 13, Spec. Iss.
- Substantive notes
- Special Issue: Geopolymers and Alkali-Activated Materials: Synthesis, Characterization, and Applications
- Keywords in English
- chloride ions’ penetration, chloride ions’ diffusion, alkali-activated concrete (AAC), mechanical strengths
- ASJC Classification
- DOI
- DOI:10.3390/ma15134475 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/15/13/4475 Opening in a new tab
- Related project
- E-mobilność oraz zrównoważone materiały i technologie. . Project leader at PK: , ,
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTc22a4ef292b14fdf8546d9378ccaf438/
- URN
urn:pkr-prod:CUTc22a4ef292b14fdf8546d9378ccaf438
* 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.