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Study of the Microstructure Evolution of Low-pH Cements Based on Ordinary Portland Cement (OPC) by Mid- and Near-Infrared Spectroscopy, and Their Influence on Corrosion of Steel Reinforcement
dc.contributor.author | García Calvo, José Luis | |
dc.contributor.author | Sánchez Moreno, Mercedes | |
dc.contributor.author | Alonso Alonso, María Cruz | |
dc.contributor.author | Hidalgo López, Ana | |
dc.contributor.author | García-Olmo, J. | |
dc.date.accessioned | 2017-11-06T09:13:23Z | |
dc.date.available | 2017-11-06T09:13:23Z | |
dc.date.issued | 2013 | |
dc.identifier.uri | http://hdl.handle.net/10396/15280 | |
dc.description.abstract | Low-pH cements are designed to be used in underground repositories for high level waste. When they are based on Ordinary Portland Cements (OPC), high mineral admixture contents must be used which significantly modify their microstructure properties and performance. This paper evaluates the microstructure evolution of low-pH cement pastes based on OPC plus silica fume and/or fly ashes, using Mid-Infrared and Near-Infrared spectroscopy to detect cement pastes mainly composed of high polymerized C-A-S-H gels with low C/S ratios. In addition, the lower pore solution pH of these special cementitious materials have been monitored with embedded metallic sensors. Besides, as the use of reinforced concrete can be required in underground repositories, the influence of low-pH cementitious materials on steel reinforcement corrosion was analysed. Due to their lower pore solution pH and their different pore solution chemical composition a clear influence on steel reinforcement corrosion was detected | es_ES |
dc.format.mimetype | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | https://creativecommons.org/licenses/by/4.0/ | es_ES |
dc.source | Materials 6(6), 2508-2521 (2013) | es_ES |
dc.subject | Low-pH cements | es_ES |
dc.subject | Hydration | es_ES |
dc.subject | Microstructure | es_ES |
dc.subject | pH sensors | es_ES |
dc.subject | Corrosion of steel reinforcements | es_ES |
dc.title | Study of the Microstructure Evolution of Low-pH Cements Based on Ordinary Portland Cement (OPC) by Mid- and Near-Infrared Spectroscopy, and Their Influence on Corrosion of Steel Reinforcement | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.3390/ma6062508 | es_ES |
dc.relation.projectID | Unión Europea. FI6W-CT-2004-508851 | es_ES |
dc.relation.projectID | Gobierno de España. BIA 2011_22760 | es_ES |
dc.relation.projectID | Gobierno de España. JCI-2011-09572 | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |