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dc.contributor.authorMonasterio, M.
dc.contributor.authorGaitero, J.J.
dc.contributor.authorManzano, H.
dc.contributor.authorDolado, Jorge S.
dc.contributor.authorCerveny, S.
dc.date.accessioned2016-04-26T14:27:22Z
dc.date.available2016-04-26T14:27:22Z
dc.date.issued2015-05-05
dc.identifier.citationLANGMUIR, Vol. 31, Issue 17 (2015), pp. 4964-4972en
dc.identifier.issn0743-7463en
dc.identifier.urihttp://hdl.handle.net/11556/221
dc.description.abstractConfined water in the slit mesopores of the mineral tobermorite provides an excellent model system for analyzing the dynamic properties of water confined in cement-like materials. In this work, we use broadband dielectric spectroscopy (BDS) to analyze the dynamic of water entrapped in this crystalline material. Two samples, one natural and one synthetic, were analyzed, and despite their similar structure, the motion of confined water in their zeolitic cavity displays considerably different behavior. The water dynamics splits into two different behaviors depending on the chemical nature of the otherwise identical structural environment: water molecules located in areas where the primary building units are SiO4 relax slowly compared to water molecules located in cavities built with both AlO4 and SiO4. Compared to water confined in regular porous systems, water restricted in tobermorite is slower, indicating that the mesopore structure induces high disorder in the water structure. A comparison with water confined in the C-S-H gel is also discussed in this work. The strong dynamical changes in water due to the presence of aluminum might have important implications in the chemical transport of ions within hydrated calcium silicates, a process that governs the leaching and chemical degradation of cement.en
dc.description.sponsorshipBasque government through the Nanoiker Project under the ETORTEK Program (IE14-393), Spanish Ministry of Education (MAT2012-31088), Spanish Ministerio de Industria y Competitividad (Juan de la Cierva)en
dc.language.isoengen
dc.publisherAMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USAen
dc.titleEffect of Chemical Environment on the Dynamics of Water Confined in Calcium Silicate Minerals: Natural and Synthetic Tobermoriteen
dc.typearticleen
dc.identifier.doi10.1021/acs.langmuir.5b00614en
dc.isiYesen
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsCATION-EXCHANGEen
dc.subject.keywordsCELL DIMENSIONSen
dc.subject.keywordsNM TOBERMORITESen
dc.subject.keywordsTHERMAL-BEHAVIORen
dc.subject.keywordsSUPERCOOLED WATERen
dc.subject.keywordsANGSTROM TOBERMORITEen
dc.subject.keywordsALUMINUM INCORPORATIONen
dc.subject.keywordsSUBSTITUTED TOBERMORITESen
dc.subject.keywordsX-RAY-DIFFRACTIONen
dc.subject.keywordsC-S-Hen


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