Session
Civil Engineering, Infrastructure and Environment
Description
Ternary binders are defined in this study as compositions of Calcium Aluminate Cement (CAC), Ordinary Portland Cement (OPC) and Calcium Sulfate (CS̅). Several mixtures were studied, calorimetric and shrinkage technique has been used to follow the hydration during 24 hours. The XRD technique is used as support in the analysis of the hydration products. The results have shown that the initial amount of ��� and �� play a key role in the hydration of ��/���/�� mixtures and especially affect the formation of ettringite. The mechanism of reactions (hydration kinetic) and the reactions speed (acceleration or retardation) depends by the aggregates (LSP, QP) put in the different binders. The addition of re-dispersible powders showed retardation in hydration kinetics, longer setting times and also changed the dimensional stability. Comparison of the phase development monitored by in-situ XRD was performed.
Keywords:
Ternary binders, Calorimetry, Shrinkage, re-dispersible powder
Proceedings Editor
Edmond Hajrizi
ISBN
978-9951-437-65-3
First Page
44
Last Page
49
Location
Durres, Albania
Start Date
29-10-2017 5:00 PM
End Date
29-10-2017 5:15 PM
DOI
10.33107/ubt-ic.2017.43
Recommended Citation
Qorllari, Anxhelina; Qoku, Elsa; Bier, Thomas A.; and Dilo, Teuta, "Investigation of ternary binder based systems in terms of Calorimetry, Shrinkage and In-Situ XRD" (2017). UBT International Conference. 43.
https://knowledgecenter.ubt-uni.net/conference/2017/all-events/43
Included in
Investigation of ternary binder based systems in terms of Calorimetry, Shrinkage and In-Situ XRD
Durres, Albania
Ternary binders are defined in this study as compositions of Calcium Aluminate Cement (CAC), Ordinary Portland Cement (OPC) and Calcium Sulfate (CS̅). Several mixtures were studied, calorimetric and shrinkage technique has been used to follow the hydration during 24 hours. The XRD technique is used as support in the analysis of the hydration products. The results have shown that the initial amount of ��� and �� play a key role in the hydration of ��/���/�� mixtures and especially affect the formation of ettringite. The mechanism of reactions (hydration kinetic) and the reactions speed (acceleration or retardation) depends by the aggregates (LSP, QP) put in the different binders. The addition of re-dispersible powders showed retardation in hydration kinetics, longer setting times and also changed the dimensional stability. Comparison of the phase development monitored by in-situ XRD was performed.