Gutenberg Open Science: Multistep crystallization pathways in the ambient-temperature synthesis of a new alkali-activated binder

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-8029

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DC Field	Value	Language
dc.contributor.author	Maslyk, Marcel	-
dc.contributor.author	Gäb, Tobias	-
dc.contributor.author	Matveeva, Galina	-
dc.contributor.author	Opitz, Phil	-
dc.contributor.author	Mondeshki, Mihail	-
dc.contributor.author	Krysiak, Yasar	-
dc.contributor.author	Kolb, Ute	-
dc.contributor.author	Tremel, Wolfgang	-
dc.date.accessioned	2022-10-25T09:10:47Z	-
dc.date.available	2022-10-25T09:10:47Z	-
dc.date.issued	2022	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/8044	-
dc.description.abstract	Concrete is the most prevalent manufactured material that has shaped the built environment, but the high-temperature production of cement, the main component of concrete, has a massive carbon footprint. It is shown that CO2 emissions during clinker production of cement can be circumvented by a metathesis reaction at room temperature in ball-mills, where the cement clinker is replaced by non-calcined limestone and alkali-activated binders/geopolymers. An amorphous intermediate (aNaSiCC) containing a random mixture of the ionic constituents in “molecular” dispersion is formed by mechanochemical activation of CaCO3 and Na2SiO3. This allows molecular transport during crystallization and low activated reactions, as precipitation of solids from liquids (nucleation limited and kinetically controlled) and solid-state transformations (diffusion-limited and thermodynamically controlled) have equal weight. Several steps of the hydration reaction could be resolved. Activating the amorphous aNaSiCC precursor with NaOH leads to a CSH-like phase with a C/S ratio of ≈1 containing some sodium. The carbonate components pass through a multistep crystallization from aNaSiCC via pirssonite and gaylussite to monohydrocalcite. The findings help unravel the interplay between thermodynamics and kinetics in complex reactions of alkali-activated binders and for CaCO3 crystallization in industrial and geochemical settings, where dissolved silicate is always involved.	en_GB
dc.language.iso	eng	de
dc.rights	CC BY-NC-ND	*
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.subject.ddc	540 Chemie	de_DE
dc.subject.ddc	540 Chemistry and allied sciences	en_GB
dc.title	Multistep crystallization pathways in the ambient-temperature synthesis of a new alkali-activated binder	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-8029	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 09 Chemie, Pharmazie u. Geowissensch.	de
jgu.organisation.number	7950	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Advanced functional materials	de
jgu.journal.volume	32	de
jgu.journal.issue	7	de
jgu.pages.alternative	2108126	de
jgu.publisher.year	2022	-
jgu.publisher.name	Wiley-VCH	de
jgu.publisher.place	Weinheim	de
jgu.publisher.issn	1616-3028	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	540	de
jgu.publisher.doi	10.1002/adfm.202108126	de
jgu.organisation.ror	https://ror.org/023b0x485	-
Appears in collections:	JGU-Publikationen

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