Title:
Alkali-Activated Slag--Fly Ash Cements
Author(s):
Jan Bijen and Hennie Waltje
Publication:
Symposium Paper
Volume:
114
Issue:
Appears on pages(s):
1565-1578
Keywords:
activators; alkali-aggregate reactions; alkalies; carbonation; blast furnace slag; fly ash; freeze-thaw durability; lignosulfonate; slag cements; Materials Research
DOI:
10.14359/1900
Date:
5/1/1989
Abstract:
Cements consisting of 60 percent ground granulated blast furnace slag and 40 percent fly ash activated by 7 percent sodium hydroxide have been investigated. Various slags were used, including some laboratory-made synthetic slags. The influence of additives like superplasticizers and defoaming agents has been examined. The most favorable composition with respect to strength development has been subjected to a durability testing program. A negative aspect appeared to be the carbonation resistance, which is low in comparison with portland cement. Carbonation leads to a decrease in strength. Other properties were favorable.