Evaluation of pozzolanic activity and physico-mechanical characteristics in ceramic powder-lime pastes

Ceramic powder has been used as an artificial pozzolanic addition, in preparing pozzolanic mortars for the historic/traditional structures’ construction. In order to evaluate the pozzolanic activity of ceramic powder, several pastes were prepared, by mixing it with hydrated lime, in different ratios...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2008-04, Vol.92 (1), p.345-351
Main Authors: Bakolas, A., Aggelakopoulou, E., Moropoulou, A.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Applied sciences
Buildings. Public works
Cement concrete constituents
Cements
Chemistry
Chemistry and Materials Science
Exact sciences and technology
Inorganic Chemistry
Materials
Measurement Science and Instrumentation
Miscellaneous
Physical Chemistry
Polymer Sciences
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Summary:Ceramic powder has been used as an artificial pozzolanic addition, in preparing pozzolanic mortars for the historic/traditional structures’ construction. In order to evaluate the pozzolanic activity of ceramic powder, several pastes were prepared, by mixing it with hydrated lime, in different ratios. The pastes were stored in standard conditions (RH=99±1%, T =25±1°C) and evaluated using thermal analysis (DTA/TG), X-ray diffraction (XRD), compressive strength tests and mercury intrusion porosimetry (MIP), in time. The obtained results revealed that the compounds formed were CSH and C 4 ACH 11 (monocarboaluminate) after 270 days of curing. The calcium hydroxide consumption increases as the initial amount of the ceramic powder in the paste augments. The maximum strength development is obtained for ceramic powder/hydrated lime ratio 3:1.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-007-8858-1