Effects of ground granulated blast furnace slag on the mechanical and microstructure of fly ash-based geopolymer binders
Paper
Paper/Presentation Title | Effects of ground granulated blast furnace slag on the mechanical and microstructure of fly ash-based geopolymer binders |
---|---|
Presentation Type | Paper |
Authors | Yang, T. (Author), Yao, X. (Author), Zhang, Z. (Author) and Wang, H. (Author) |
Journal or Proceedings Title | Proceedings of the 8th Asian-Australasian Conference on Composite Materials (ACCM 2012) |
ERA Conference ID | 60079 |
Journal Citation | 1, pp. 333-343 |
Number of Pages | 11 |
Year | 2012 |
Place of Publication | Kowloon, Hong Kong |
ISBN | 9781629930664 |
Web Address (URL) of Paper | http://www.accm8.my/ |
Conference/Event | 8th Asian-Australasian Conference on Composite Materials (ACCM 2012): Composites: Enabling Tomorrow's Industry Today |
Asian-Australian Conference on Composite Materials | |
Event Details | 8th Asian-Australasian Conference on Composite Materials (ACCM 2012): Composites: Enabling Tomorrow's Industry Today Event Date 06 to end of 08 Nov 2012 Event Location Kuala Lumpur, Malaysia |
Event Details | Asian-Australian Conference on Composite Materials |
Abstract | The effects of addition of ground granulated blast furnace slag on mechanical properties and microstructure of fly ash-based geopolymers were investigated via compressive strength testing, X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The compressive strength of geopolymers increased with the slag ratio increasing. The alkaline activation of slag and fly ash forms a kind of homogeneous product with microstructure between typical alkali aluminosilicate gels (N-A-S-H) and calcium silicate hydrates (C-S-H). Distinct phase separation has not been found as the slag ratio varies or the modulus of the alkali activator decreases from 1.2 to 2.0. The FTIR bands assigning to T-O-Si (T=Al or Si) asymmetric stretching vibrations of the geopolymer binders shift towards lower regions as slag is incorporated, and this shift is explained due to the decrease of poly-degree of the aluminosilicate networks. The increased XRD diffraction hump and FTIR bands that assigned to aluminosilicate gels suggests improved quantity of alkaline activation products as the content of slag increases, and this is related to the increased compressive strength. |
Keywords | geopolymer; fly ash; slag; calcium; alkaline activation |
ANZSRC Field of Research 2020 | 400505. Construction materials |
401601. Ceramics | |
340604. Electrochemistry | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nanjing University of Technology, China |
Faculty of Engineering and Surveying | |
Centre of Excellence in Engineered Fibre Composites | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q1v92/effects-of-ground-granulated-blast-furnace-slag-on-the-mechanical-and-microstructure-of-fly-ash-based-geopolymer-binders
2143
total views80
total downloads2
views this month0
downloads this month