Physico-Chemical Properties of Lithium Silicates Related to
Their Utilization for Concrete Densifiers

J 2023

Physico-Chemical Properties of Lithium Silicates Related to Their Utilization for Concrete Densifiers

KALINA, Lukas, Vlastimil BILEK, Martin SEDLACIK, Vladislav CABA, Jiri SMILEK et. al.

Základní údaje

Originální název

Physico-Chemical Properties of Lithium Silicates Related to Their Utilization for Concrete Densifiers

Autoři

KALINA, Lukas (garant), Vlastimil BILEK, Martin SEDLACIK, Vladislav CABA, Jiri SMILEK, Jiri SVEC, Eva BARTONICKOVA, Pavel ROVNANIK a Josef FLADR

Vydání

Energy Materials: Materials Science and Engineering for Energy Systems, BASEL, Taylor & Francis, 2023, 1996-1944

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10300 1.3 Physical sciences

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.400 v roce 2022

Kód RIV

RIV/00216224:90242/23:00133750

Organizační jednotka

CIISB III

DOI

http://dx.doi.org/10.3390/ma16062173

UT WoS

000960158100001

Klíčová slova anglicky

concrete densifier; lithium silicate; surface treatment; gelation process

Štítky

CF NMR, ne MU, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 4. 2024 23:21, Mgr. Michal Petr

Anotace

V originále

Protection of concrete against aggressive influences from the surrounding environment becomes an important step to increase its durability. Today, alkali silicate solutions are advantageously used as pore-blocking treatments that increase the hardness and impermeability of the concrete's surface layer. Among these chemical substances, known as concrete densifiers, lithium silicate solutions are growing in popularity. In the present study, the chemical composition of the lithium silicate densifiers is put into context with the properties of the newly created insoluble inorganic gel responsible for the micro-filling effect. Fourier-transform infrared spectroscopy was used as a key method to describe the structure of the formed gel. In this context, the gelation process was studied through the evolution of viscoelastic properties over time using oscillatory measurements. It was found that the gelation process is fundamentally controlled by the molar ratio of SiO2 and Li2O in the densifier. The low SiO2 to Li2O ratio promotes the gelling process, resulting in a rapidly formed gel structure that affects macro characteristics, such as water permeability, directly related to the durability of treated concretes.

Návaznosti

90242, velká výzkumná infrastruktura

Název: CIISB III

Citovat

KALINA, Lukas, Vlastimil BILEK, Martin SEDLACIK, Vladislav CABA, Jiri SMILEK, Jiri SVEC, Eva BARTONICKOVA, Pavel ROVNANIK a Josef FLADR. Physico-Chemical Properties of Lithium Silicates Related to Their Utilization for Concrete Densifiers. Energy Materials: Materials Science and Engineering for Energy Systems. BASEL: Taylor & Francis, 2023, roč. 16, č. 6, s. 1-10. ISSN 1996-1944. Dostupné z: https://dx.doi.org/10.3390/ma16062173.

@article{2382944,
   author = {Kalina, Lukas and Bilek, Vlastimil and Sedlacik, Martin and Caba, Vladislav and Smilek, Jiri and Svec, Jiri and Bartonickova, Eva and Rovnanik, Pavel and Fladr, Josef},
   article_location = {BASEL},
   article_number = {6},
   doi = {http://dx.doi.org/10.3390/ma16062173},
   keywords = {concrete densifier; lithium silicate; surface treatment; gelation process},
   language = {eng},
   issn = {1996-1944},
   journal = {Energy Materials: Materials Science and Engineering for Energy Systems},
   title = {Physico-Chemical Properties of Lithium Silicates Related to Their Utilization for Concrete Densifiers},
   url = {https://www.mdpi.com/1996-1944/16/6/2173},
   volume = {16},
   year = {2023}
}

TY  - JOUR
ID  - 2382944
AU  - Kalina, Lukas - Bilek, Vlastimil - Sedlacik, Martin - Caba, Vladislav - Smilek, Jiri - Svec, Jiri - Bartonickova, Eva - Rovnanik, Pavel - Fladr, Josef
PY  - 2023
TI  - Physico-Chemical Properties of Lithium Silicates Related to Their Utilization for Concrete Densifiers
JF  - Energy Materials: Materials Science and Engineering for Energy Systems
VL  - 16
IS  - 6
SP  - 1-10
EP  - 1-10
PB  - Taylor & Francis
SN  - 19961944
KW  - concrete densifier
KW  - lithium silicate
KW  - surface treatment
KW  - gelation process
UR  - https://www.mdpi.com/1996-1944/16/6/2173
N2  - Protection of concrete against aggressive influences from the surrounding environment becomes an important step to increase its durability. Today, alkali silicate solutions are advantageously used as pore-blocking treatments that increase the hardness and impermeability of the concrete's surface layer. Among these chemical substances, known as concrete densifiers, lithium silicate solutions are growing in popularity. In the present study, the chemical composition of the lithium silicate densifiers is put into context with the properties of the newly created insoluble inorganic gel responsible for the micro-filling effect. Fourier-transform infrared spectroscopy was used as a key method to describe the structure of the formed gel. In this context, the gelation process was studied through the evolution of viscoelastic properties over time using oscillatory measurements. It was found that the gelation process is fundamentally controlled by the molar ratio of SiO2 and Li2O in the densifier. The low SiO2 to Li2O ratio promotes the gelling process, resulting in a rapidly formed gel structure that affects macro characteristics, such as water permeability, directly related to the durability of treated concretes.
ER  -

KALINA, Lukas, Vlastimil BILEK, Martin SEDLACIK, Vladislav CABA, Jiri SMILEK, Jiri SVEC, Eva BARTONICKOVA, Pavel ROVNANIK a Josef FLADR. Physico-Chemical Properties of Lithium Silicates Related to Their Utilization for Concrete Densifiers. \textit{Energy Materials: Materials Science and Engineering for Energy Systems}. BASEL: Taylor \&{} Francis, 2023, roč.~16, č.~6, s.~1-10. ISSN~1996-1944. Dostupné z: https://dx.doi.org/10.3390/ma16062173.

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