Permeability of ultra-fine reactive fly ash applied to cement-based composites
Authors:
- Wei-Ting Lin,
- An Cheng,
- Wei-Chung Yeih,
- Kinga Korniejenko,
- Marek Hebda,
- Michał Łach
Abstract
This study explores the permeability of the partial replacement of cement using ultra-fine reactive fly ash (URFA) and silica fume. URFA is an industrial by-product from thermal power plants and it has a smaller spherical particle size (0.1 µm to 10 µm) than the general fly ash. The fixed water-to-binder ratio was 0.45 and the replacement of cement was used as 5% and 10%. The combinations of URFA and silica fume in composites were used as 5% URFA plus 5% silica fume and 8% URFA plus 2% silica fume. The results show that the inclusion of URFA was enhanced to increase the workability, and help to produce pozzolanic reaction and C-S-H colloids. The colloids were filling the pore structures to increase the compactness of specimen, which is consistency with the increased the compressive strength and reduction of the dry shrinkage. It also was reduced the chloride ion penetration and non-steady state migration coefficient, which is helpful for improving the mechanical properties and permeability. The composites with 10% URFA had a better performance. For blending specimen, it was also a tendency to improve mechanical properties and permeability; and the combination of 5% URFA and 5% silica fume in composites enhanced better performances.
- Record ID
- CUTf0f792ca469d4ee990936a0853bdd171
- Publication categories
- ; ;
- Author
- Pages
- 465-472
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 472; Oznaczenie streszczenia - Abstr.
- Book
- Serrat Carles, Carles Serrat Casas Joan Ramon, Joan Ramon Casas Gibert Vicente Vicente Gibert (eds.): Current Topics and Trends on Durability of Building Materials and Components : proceedings of the XV edition of the International Conference on Durability of Building Materials and Components (DBMC 2020), Barcelona, Spain, 20-23 October 2020, 2020, Barcelona, International Centre for Numerical Methods in Engineering (CIMNE), ISBN 978-84-121101-8-0
- Keywords in English
- ultra-fine reactive fly ash, chloride diffusion, durability, pore structures
- DOI
- DOI:10.23967/dbmc.2020.185 Opening in a new tab
- URL
- https://congress.cimne.com/dbmc2020/frontal/default.asp Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 5
- Publication indicators
- = 0
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTf0f792ca469d4ee990936a0853bdd171/
- URN
urn:pkr-prod:CUTf0f792ca469d4ee990936a0853bdd171
* 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.