Determination of the Evolution of Hydration Temperature When Combining High-temperature Fly Ash and Fluidized Bed Combustion Fly Ash

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F21%3APU139557" target="_blank" >RIV/00216305:26110/21:PU139557 - isvavai.cz</a>

Výsledek na webu

<a href="https://aip.scitation.org/doi/10.1063/5.0041965" target="_blank" >https://aip.scitation.org/doi/10.1063/5.0041965</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0041965" target="_blank" >10.1063/5.0041965</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of the Evolution of Hydration Temperature When Combining High-temperature Fly Ash and Fluidized Bed Combustion Fly Ash

Popis výsledku v původním jazyce

Adding high-temperature fly ash to a concrete mixture has become a common matter in modern concrete technology, not only because of the positive influence on chosen parameters of the fresh and hardened mixture, but also from an economic point of view. In recent years, however, demand for this ingredient has risen to the extent that it is becoming unavailable; thus, it is necessary to seek possible alternatives. One potential solution is the partial replacement of high-temperature fly ash with fluid fly ash. However, it is legislatively impossible to use fluid fly ash as an active admixture of concrete thus far, mainly because of its inappropriate chemical composition. Upon adding high-temperature fly ash to a cement composite, the onset of the hydration process is delayed. On the other hand, fluid fly ash can cause acceleration of the hydration processes of the cement composite thanks to the nature of its chemical composition, particularly the reactive free lime content. This article focuses on the study of possible optimal combinations of these two types of ash to eliminate negative influences on the speed and evolution of hydration processes related to the use of hightemperature ashes.

Název v anglickém jazyce

Determination of the Evolution of Hydration Temperature When Combining High-temperature Fly Ash and Fluidized Bed Combustion Fly Ash

Popis výsledku anglicky

Adding high-temperature fly ash to a concrete mixture has become a common matter in modern concrete technology, not only because of the positive influence on chosen parameters of the fresh and hardened mixture, but also from an economic point of view. In recent years, however, demand for this ingredient has risen to the extent that it is becoming unavailable; thus, it is necessary to seek possible alternatives. One potential solution is the partial replacement of high-temperature fly ash with fluid fly ash. However, it is legislatively impossible to use fluid fly ash as an active admixture of concrete thus far, mainly because of its inappropriate chemical composition. Upon adding high-temperature fly ash to a cement composite, the onset of the hydration process is delayed. On the other hand, fluid fly ash can cause acceleration of the hydration processes of the cement composite thanks to the nature of its chemical composition, particularly the reactive free lime content. This article focuses on the study of possible optimal combinations of these two types of ash to eliminate negative influences on the speed and evolution of hydration processes related to the use of hightemperature ashes.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

SPECIAL CONCRETE AND COMPOSITES 2020: 17th International Conference

ISBN

978-0-7354-4066-1

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

8

Strana od-do

„020009-1“-„020009-8“

Název nakladatele

AIP Publishing

Místo vydání

USA

Místo konání akce

Skalský dvůr

Datum konání akce

14. 10. 2020

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

000653725400013