Application of ternary cementless hybrid binders for pervious concrete
Authors:
- Kae-Long Lin,
- Wei-Ting Lin,
- Kinga Korniejenko,
- Hui-Mi Hsu
Abstract
In this study, alkali-free activator-type ternary cementless binders were developed using ground granulated blast-furnace slag (GGBS), co-fired fly ash (CFA), and desulfurization gypsum (DG). The properties of cementless binders were verified and used to investigate the feasibility of application to pervious concrete. The results indicated that including CFA in cementless binders increased the initial and final setting times. The addition of DG shortened the setting time and the addition exceeded 7 wt% resulting in a rapid setting, which did not meet the ASTM C150 specification. A binary cementless binder with a CFA-GGBS mix achieved a maximum compressive strength up to 54% of the cement group, and the optimum mixture was 70% GGBS with 30% CFA. DG increased the SO3 content of the binder and promoted the production of ettringite (AFt), resulting in an effective increase in compressive strength up to 92% of the cement group. The optimum proportion of cementless binders to meet the setting times was 70% GGBS, 25% CFFA, and 5% FGDG, resulting in maximum compressive strength up to 79% of the cement group. During the hardening period of the cementless pastes, the generation of AFt affected the internal pore structures of the C-S-H colloids, resulting in higher capillary pores. DG also accelerated the production of AFt, causing an increase in capillary pores. In addition, the maximum compressive strength of cementless pervious concrete developed in this study reached 12 MPa, and the permeability coefficient was up to 0.156 cm/s. It can meet the requirements of the general pervious pavement specification in Taiwan.
- Record ID
- CUT8007d8b6f2194ee2a721a0d46d4bbd59
- Publication categories
- ;
- Author
- Journal series
- Construction and Building Materials, ISSN 0950-0618, e-ISSN 1879-0526
- Issue year
- 2022
- Vol
- 346
- Pages
- [1-19]
- Article number
- 128497
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 18-19; Bibliografia (liczba pozycji) - 56; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 346
- Keywords in English
- co-fired fly ash, cementless binders, permeated coefficient, pore structures, microscopic properties
- ASJC Classification
- ; ;
- DOI
- DOI:10.1016/j.conbuildmat.2022.128497 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0950061822021572 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Citation count
- 8
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT8007d8b6f2194ee2a721a0d46d4bbd59/
- URN
urn:pkr-prod:CUT8007d8b6f2194ee2a721a0d46d4bbd59
* 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.