Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/28165
Title: | Alkali-activated binders based on ground granulated blast furnace slag and phosphogypsum | Authors: | GIJBELS, Katrijn Iacobescu, Remus Ion Pontikes, Yiannis SCHREURS, Sonja SCHROEYERS, Wouter |
Issue Date: | 2019 | Source: | CONSTRUCTION AND BUILDING MATERIALS, 215, p. 371-380 | Abstract: | The effect of phosphogypsum (PG) in alkali-activated ground granulated blast furnace slag (GGBFS) on the reactivity, strength development and final matrix properties was investigated, as a function of alkali activator. The results were compared with alkali-activated reference samples from GGBFS. PG completely dissolves and takes part in solid reaction product formation. Upon PG incorporation, portlandite and ettringite are initially formed after dissolution. The hardened binder consists mainly of amorphous hydration products, intermixed with thenardite and minor amounts of secondary gypsum and merwinite. PG incorporation resulted in faster initial and delayed final setting time, while it enhanced the compressive strength and amorphous phase development when sodium hydroxide was used. PG gave rise to a decrease of Al/Si and Ca/Si ratios in the C-A-S-H gels and a higher polymerized network. | Notes: | Gijbels, K (reprint author), Hasselt Univ, CMK, Nucl Technol Ctr, Agoralaan, Gebouw H, B-3590 Diepenbeek, Belgium. katrijn.gijbels@uhasselt.be; remusion.iacobescu@kuleuven.be; yiannis.pontikes@kuleuven.be; sonja.schreurs@uhasselt.be; wouter.schroeyers@uhasselt.be | Keywords: | Super-sulphated cement; Alkali-activated binder; Ground granulated blast furnace slag; Phosphogypsum; Hydration; Building material | Document URI: | http://hdl.handle.net/1942/28165 | ISSN: | 0950-0618 | e-ISSN: | 1879-0526 | DOI: | 10.1016/j.conbuildmat.2019.04.194 | ISI #: | 000474322400033 | Rights: | 2019 Elsevier Ltd. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2020 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1-s2.0-S0950061819310839-main.pdf Restricted Access | Published version | 6.98 MB | Adobe PDF | View/Open Request a copy |
05-07-2019 Alkali-activated binders based on ground granulated blast furnace slag and phosphogypsum.pdf | Peer-reviewed author version | 5.74 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
5
checked on Sep 2, 2020
WEB OF SCIENCETM
Citations
60
checked on Sep 12, 2024
Page view(s)
176
checked on Sep 7, 2022
Download(s)
366
checked on Sep 7, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.