Microstructural and strength improvements through the use of Na2CO3 in a cementless Ca(OH)2-activated Class F fly ash system

• Published in: Cement and concrete research Vol. 67; pp. 215 - 225
• Main Authors: Jeon, Dongho, Jun, Yubin, Jeong, Yeonung, Oh, Jae Eun
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.01.2015
• Subjects: Ca(OH)2; Cementless binder; Fly ash; Microstructure; Na2CO3; Na2CO3; Cementless binder; Fly ash; Ca(OH)2; Microstructure

This study explores the beneficial effects of Na2CO3 as an additive for microstructural and strength improvements in a Ca(OH)2-activated fly ash system. NaOH-activated fly ash samples were also tested to compare the effect of Na2CO3. Compressive strength testing, XRD, SEM/BSE/EDS, 29Si/27Al MAS-NMR,...