FREEZE-THAW DURABILITY OF CEMENT MORTARS WITH CO-COMBUSTION MUNICIPAL WASTE ASH

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932526" target="_blank" >RIV/60461373:22310/25:43932526 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/25:00390681

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

FREEZE-THAW DURABILITY OF CEMENT MORTARS WITH CO-COMBUSTION MUNICIPAL WASTE ASH

Popis výsledku v původním jazyce

The aim of this research was to investigate the possible use of ash produced from the co-combustion of coal withsorted municipal waste and limestone as a material with potential hydraulic properties. The obtained municipalFBC bottom ash (MFBC bottom ash) was treated by grinding in a ball mill. The research focused on thepreparation and durability of mixed cement mortars to freeze-thaw. Specifically, the corrosion behavior ofmortars prepared with different percentages of cement replacement by MFBC bottom ash (10, 20, 30%) wasmonitored in the environment of frost, moisture and deicing salts. The results showed that bodies prepared froma mixture of MFBC bottom ash and cement displayed, according to the ČSN EN 72 1326, Z1 standard, betterresistance to alternating freezing and thawing both in water and 3% NaCl environments compared to thereference Portland cement. Even with a high water to binder ratio w=0.5, the mixed mortars had an undisturbedor slightly disturbed surface after 100 freeze-thaw cycles. These results are very positive from the point of viewof the use of MFBC bottom ash in construction, because data from literature indicate significantly worse resultseven with a lower substitution of similar ash for cement.

Název v anglickém jazyce

FREEZE-THAW DURABILITY OF CEMENT MORTARS WITH CO-COMBUSTION MUNICIPAL WASTE ASH

Popis výsledku anglicky

The aim of this research was to investigate the possible use of ash produced from the co-combustion of coal withsorted municipal waste and limestone as a material with potential hydraulic properties. The obtained municipalFBC bottom ash (MFBC bottom ash) was treated by grinding in a ball mill. The research focused on thepreparation and durability of mixed cement mortars to freeze-thaw. Specifically, the corrosion behavior ofmortars prepared with different percentages of cement replacement by MFBC bottom ash (10, 20, 30%) wasmonitored in the environment of frost, moisture and deicing salts. The results showed that bodies prepared froma mixture of MFBC bottom ash and cement displayed, according to the ČSN EN 72 1326, Z1 standard, betterresistance to alternating freezing and thawing both in water and 3% NaCl environments compared to thereference Portland cement. Even with a high water to binder ratio w=0.5, the mixed mortars had an undisturbedor slightly disturbed surface after 100 freeze-thaw cycles. These results are very positive from the point of viewof the use of MFBC bottom ash in construction, because data from literature indicate significantly worse resultseven with a lower substitution of similar ash for cement.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TK05020140" target="_blank" >TK05020140: Vývoj bezodpadové technologie využívající modifikovaný TAP pro snížení zátěže životního prostředí při výrobě tepla a elektrické energie v klasických zdrojích</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 12th International Conference on Chemical Technology

ISBN

978-80-88307-27-3

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

108-113

Název nakladatele

Česká společnost průmyslové chemie (ČSPCH)

Místo vydání

Praha

Místo konání akce

Mikulov

Datum konání akce

14. 4. 2025

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

001678792400018