The phase composition study of hydraulic binder prepared from calcined clay, anhydrite and lime

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43928416" target="_blank" >RIV/60461373:22310/23:43928416 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22810/23:43928416

Výsledek na webu

<a href="http://dx.doi.org/10.14644/EC2023.008" target="_blank" >http://dx.doi.org/10.14644/EC2023.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14644/EC2023.008" target="_blank" >10.14644/EC2023.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The phase composition study of hydraulic binder prepared from calcined clay, anhydrite and lime

Popis výsledku v původním jazyce

Nowadays, when the emphasis is on ecology and reduction of CO2 emissions, the preparation of anew hydraulic binder that could at least partially replace the high-emission Portland cement isbecoming a topical issue. This work deals with phase composition study of the new hydraulic bindercreated from metakaolin calcined clay, anhydrite II and lime. A number of pastes with varyingcomposition were prepared. After raw material characterization, the phase composition was measuredusing X-ray diffraction with evaluation after 28 and 180 days. It was found that after 28 days the maincrystalline binder phase was ettringite, further, the samples contained high proportion of amorphousphase and smaller amount of anhydrite, portlandite, calcite and quartz. After 180 days, two newphases stratlingite and gypsum were detected in percent units. Nevertheless, it was clear that thesulfocalcic binder is stable from the point of view of the phase composition in the monitored time of180 days, and with an optimal composition it reaches a compressive strength of up to 80 MPa.

Název v anglickém jazyce

The phase composition study of hydraulic binder prepared from calcined clay, anhydrite and lime

Popis výsledku anglicky

Nowadays, when the emphasis is on ecology and reduction of CO2 emissions, the preparation of anew hydraulic binder that could at least partially replace the high-emission Portland cement isbecoming a topical issue. This work deals with phase composition study of the new hydraulic bindercreated from metakaolin calcined clay, anhydrite II and lime. A number of pastes with varyingcomposition were prepared. After raw material characterization, the phase composition was measuredusing X-ray diffraction with evaluation after 28 and 180 days. It was found that after 28 days the maincrystalline binder phase was ettringite, further, the samples contained high proportion of amorphousphase and smaller amount of anhydrite, portlandite, calcite and quartz. After 180 days, two newphases stratlingite and gypsum were detected in percent units. Nevertheless, it was clear that thesulfocalcic binder is stable from the point of view of the phase composition in the monitored time of180 days, and with an optimal composition it reaches a compressive strength of up to 80 MPa.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/FW01010195" target="_blank" >FW01010195: Pokročilé výrobní technologie pro strategické využití a skladování vedlejších energetických produktů (VEP)</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Conference Proceedings - International Conference of European Clay Groups Association – EUROCLAY2023

ISBN

—

ISSN

2283-5954

e-ISSN

—

Počet stran výsledku

6

Strana od-do

45-50

Název nakladatele

Digilabs

Místo vydání

Bari

Místo konání akce

Bari

Datum konání akce

24. 7. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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