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6861010 
Journal Article 
ITZ microstructure of concrete containing GGBS 
Gao, JM; Qian, CX; Liu, HF; Wang, B; Li, L; , 
2005 
Yes 
Cement and Concrete Research
ISSN: 0008-8846 
PERGAMON-ELSEVIER SCIENCE LTD 
OXFORD 
1299-1304 
WOS:000229987300006 
The interfacial transition zone (ITZ) of aggregate-cement paste and the morphology of hydrates in concrete containing ground granulated blast-furnace slag (GGBS) have been investigated using XRD, SEM and microhardness measurements. The experimental results demonstrated that GGBS significantly decreases both the quantity and the orientating arrangement of CH crystals at the ITZ. The CH crystal size becomes smaller because of the addition of GGBS. The weak ITZ between aggregate and cement paste was strengthened as a result of the pozzolanic reaction of GGBS. The above improvements become much more significant with the decrease of particle sizes of GGBS. (c) 2004 Elsevier Ltd. All rights reserved.