Comprehensive study of moist curing duration and activator type on mechanical properties, shrinkage, and cracking of alkali-activated slag

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F24%3APU150560" target="_blank" >RIV/00216305:26110/24:PU150560 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001173879900001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001173879900001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2024.135199" target="_blank" >10.1016/j.conbuildmat.2024.135199</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comprehensive study of moist curing duration and activator type on mechanical properties, shrinkage, and cracking of alkali-activated slag

Popis výsledku v původním jazyce

Despite the considerable research efforts, shrinkage and cracking of alkali-activated slag (AAS) is still a delicate issue. One of the reasons is the enormous complexity of these materials, which originates from different activators, their different dosing, and different approaches for curing. Therefore, the effect of the duration of moist curing of AAS pastes with the three most common sodium activator types (hydroxide, waterglass, carbonate) of the same molarity 4M Na+) and the same starting slag volume fraction (0.52) on their mechanical properties, shrinkage, and cracking performance was complexly investigated throughout one year. Shrinkage was assessed manually by measuring length changes and automatically using embedded strain gauges. A non-destructive resonance method was newly applied to monitor the evolution of cracking over time, including the physical closure of cracks. The obtained results emphasise the fundamental role of an activator for curing effectiveness based on the rate of reaction and microstructural refinement.

Název v anglickém jazyce

Comprehensive study of moist curing duration and activator type on mechanical properties, shrinkage, and cracking of alkali-activated slag

Popis výsledku anglicky

Despite the considerable research efforts, shrinkage and cracking of alkali-activated slag (AAS) is still a delicate issue. One of the reasons is the enormous complexity of these materials, which originates from different activators, their different dosing, and different approaches for curing. Therefore, the effect of the duration of moist curing of AAS pastes with the three most common sodium activator types (hydroxide, waterglass, carbonate) of the same molarity 4M Na+) and the same starting slag volume fraction (0.52) on their mechanical properties, shrinkage, and cracking performance was complexly investigated throughout one year. Shrinkage was assessed manually by measuring length changes and automatically using embedded strain gauges. A non-destructive resonance method was newly applied to monitor the evolution of cracking over time, including the physical closure of cracks. The obtained results emphasise the fundamental role of an activator for curing effectiveness based on the rate of reaction and microstructural refinement.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA22-02098S" target="_blank" >GA22-02098S: Experimentální analýza procesu smršťování, dotvarování a vzniku trhlin materiálů na bázi alkalicky aktivované strusky</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Construction and building materials

ISSN

0950-0618

e-ISSN

1879-0526

Svazek periodika

416

Číslo periodika v rámci svazku

2024

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

1-19

Kód UT WoS článku

001173879900001

EID výsledku v databázi Scopus

2-s2.0-85184666595