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Microstructure of early age hydration of natural zeolite with pure cement phases
Natural zeolites are mineralogical materials composed of aluminum and silica and are considered as pozzolanic in behavior when blended with cement. Literature on zeolite blended cements is limited, and tends to relate specifically to the effects on physical properties and durability such as compressive strength, porosity, sorptivity coefficients, degree of pozzolanic reaction, and influence on alkali aggregate expansion. Zeolites can significantly influence early age performance, particularly at elevated temperatures, and factors involved have not previously been characterized. The effects on the microstructure of pure cement phases hydrated with two different natural zeolites were investigated at 85 and 185F for periods up to 7 days. XRD data on selected samples were also obtained to provide farther insight into the hydration chemistry mechanisms. Data was assessed with a view to explaining observed performance characteristics.
Microstructure of early age hydration of natural zeolite with pure cement phases
Natural zeolites are mineralogical materials composed of aluminum and silica and are considered as pozzolanic in behavior when blended with cement. Literature on zeolite blended cements is limited, and tends to relate specifically to the effects on physical properties and durability such as compressive strength, porosity, sorptivity coefficients, degree of pozzolanic reaction, and influence on alkali aggregate expansion. Zeolites can significantly influence early age performance, particularly at elevated temperatures, and factors involved have not previously been characterized. The effects on the microstructure of pure cement phases hydrated with two different natural zeolites were investigated at 85 and 185F for periods up to 7 days. XRD data on selected samples were also obtained to provide farther insight into the hydration chemistry mechanisms. Data was assessed with a view to explaining observed performance characteristics.
Microstructure of early age hydration of natural zeolite with pure cement phases
Luke, Karen (author)
2006
12 Seiten, 28 Bilder, 2 Tabellen, 15 Quellen
Conference paper
English
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