Effect of coffee grounds addition on efflorescence in fly ash-based geopolymer
Authors:
- D. Mierzwiński,
- K. Korniejenko,
- M. Łach,
- J. Mikuła,
- J. Krzywda
Abstract
The article aim is to analyse the influence of addition of the cheap and environmental friendly material that can reduce – coffee grounds on the efflorescence effect. The additives should reduce this effect trough decreasing pH. The geopolymer matrix was prepared from fly ash from Skawina CHP plant and sand in ratio 1:1. The samples were prepared using sodium promoter - 12M sodium hydroxide solution combined with the sodium silicate solution and coffee grounds (1, 3 and 5% by mass of the composite). The samples were prepared according to the methodology described in the standard EN 12390-1. The empirical part of the research is based on: visual analyse for efflorescence, absorptivity test, pH test and compressive strength test. The results show the influence of coffee grounds on the pH reduction from about 11 to 9.21, the elimination of efflorescence and the reduction of the compressive strength.
- Record ID
- CUT1e6b270088304880bf9538f196a05178
- Publication categories
- ; ;
- Author
- Journal series
- IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, e-ISSN 1757-899X, Irregular
- Issue year
- 2018
- Vol
- 416
- Pages
- [1-6]
- Article number
- 012035
- Other elements of collation
- rys.; tab.; Bibliografia (na s.) - 14; Bibliografia (liczba pozycji) - 6; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 416
- Conference
- 7th International Conference on Advanced Materials and Structures - AMS 2018, 2018, 28-03-2018 - 31-03-2018, Timișoara, Rumunia
- Keywords in English
- coffee grounds, efflorescence effect, geopolymer, fly ash
- DOI
- DOI:10.1088/1757-899X/416/1/012035 Opening in a new tab
- URL
- http://iopscience.iop.org/article/10.1088/1757-899X/416/1/012035 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 15
- Publication indicators
- = 15
- Additional fields
- Indeksowana w: Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT1e6b270088304880bf9538f196a05178/
- URN
urn:pkr-prod:CUT1e6b270088304880bf9538f196a05178
* 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.