Engineering properties of alkali-activated composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00229843" target="_blank" >RIV/68407700:21110/15:00229843 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/15:00229844

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Engineering properties of alkali-activated composites

Popis výsledku v původním jazyce

The talk will be mainly focused on the alkali activated fly ash composites. A quantitative model of phase evolution during fly ash activation is introduced together with a descriptive micromechanical model aiming at elasticity evolution during N-A-S-H gel hardening. The elasticity of alkali activated composites is predicted via multiscale homogenization using intrinsic elastic properties of particular phases and evolving volume fractions of the phases. The Young?s modulus is calculated and validated foralkali activated fly ash paste and concrete. Since a solution of NaOH is usually used as an affordable alkali activator, the role of sodium cations in the N-A-S-H gel is examined. Leaching experiments proved almost full leachability of sodium from the N-A-S-H gel, which points to a weak alkali bond of the sodium cations in the gel.

Název v anglickém jazyce

Engineering properties of alkali-activated composites

Popis výsledku anglicky

The talk will be mainly focused on the alkali activated fly ash composites. A quantitative model of phase evolution during fly ash activation is introduced together with a descriptive micromechanical model aiming at elasticity evolution during N-A-S-H gel hardening. The elasticity of alkali activated composites is predicted via multiscale homogenization using intrinsic elastic properties of particular phases and evolving volume fractions of the phases. The Young?s modulus is calculated and validated foralkali activated fly ash paste and concrete. Since a solution of NaOH is usually used as an affordable alkali activator, the role of sodium cations in the N-A-S-H gel is examined. Leaching experiments proved almost full leachability of sodium from the N-A-S-H gel, which points to a weak alkali bond of the sodium cations in the gel.

Druh

O - Ostatní výsledky

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/EE2.3.30.0034" target="_blank" >EE2.3.30.0034: Podpora zkvalitnění týmů výzkumu a vývoje a rozvoj intersektorální mobility na ČVUT v Praze</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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