Abstract
One of the problems to affect Portland cement matrices is low resistance to aggressive agents, due principally to the presence of a high content of portlandite in the hydrated cements. Pozzolanic materials have, for decades, played an important role in improving the durability of cement-based materials. This work studies the behaviour of cement mortar matrices blended with 10% calcined paper sludge (source for metakaolin, MK) and exposed to different environmental conditions (marine and tableland environments). The results obtained using X-ray diffraction and scanning electron microscopy/energy-dispersive X-ray analyser techniques show that the ions present speed of different penetration as well as various phases and/compounds in the matrices following exposure over 1 year.
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Acknowledgements
The present study was funded by the Spanish Ministry of Science and Innovation under research project (CTM2006-12551-CO3-01/02). The Authors also wish to thank Holmen Paper Madrid, S.L. and Spanish Institute of Cement and their Applications (IECA) for their collaborations in this project.
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García Giménez, R., Vegas, I., Vigil de la Villa, R. et al. Ion Mobilisation and Transport Through Cement Mortars Blended With Thermally Activated Paper Sludge in Natural Climatic Conditions. Water Air Soil Pollut 203, 39–52 (2009). https://doi.org/10.1007/s11270-009-9990-2
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DOI: https://doi.org/10.1007/s11270-009-9990-2