Study of the alkali-silica reaction of processed fly ash and bottom ash

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43927674" target="_blank" >RIV/60461373:22310/23:43927674 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Study of the alkali-silica reaction of processed fly ash and bottom ash
Original language description
Development of alkali-silica reaction (ASR) in concretes and mortars is, among others, a possible cause of concrete construction failure. However, there are admixtures which can significantly mitigate ASR. Admixtures with such ability are generally pozzolans, moreover, energy by-products (CCPs) give very good results. This work aims to study the effect of the addition of fly ash (FA) and bottom ash (BA) as well as investigate the influence of CCPs particle size on ASR development. The ASR was studied using an accelerated dilatometric test according to ASTM 1260, complemented by an assessment of mechanical properties after immersion of tested samples into 1 M NaOH solution for 28 days. Experiments were performed on hardened samples containing 10 wt.% CCPs in 3 different grinding finenesses and with the addition of glass (size fraction 2–4 mm). Experiments performed on hardened samples with FA and BA indicate their positive effect on ASR elimination. The results showed that higher grinding finenesses of the admixtures resulted in minimal changes in the expansion reactions.
Czech name
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Czech description
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Project
<a href="/en/project/FW01010195" target="_blank" >FW01010195: Advanced and inovative processing technologies for strategic utilization and storing of coal combustion products (CCPs)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 10th International Conference on Chemical Technology
ISBN
978-80-88307-18-1
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
66-71
Publisher name
Czech Society of Industrial Chemistry
Place of publication
Prague
Event location
Mikulov
Event date
Apr 24, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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