The possibility of thermal activation of bentonitic clays: impact of temperature

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00372817" target="_blank" >RIV/68407700:21110/23:00372817 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1742-6596/2628/1/012013" target="_blank" >https://doi.org/10.1088/1742-6596/2628/1/012013</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/2628/1/012013" target="_blank" >10.1088/1742-6596/2628/1/012013</a>

Result language

angličtina

Original language name

The possibility of thermal activation of bentonitic clays: impact of temperature

Original language description

This article deals with the possibility of thermal activation of bentonitic clays. Specifically, the impact of temperature on the overall performance of two varying thermally activated bentonitic clays was investigated and compared with conventional kaolinitic clay. Firstly, the raw materials were characterized; their phase composition, granulometry and thermal analysis were measured. Then studied clays were fired at different temperatures from 500°C to 650°C. Afterwards, the overall performance of thermally activated clays was assessed through the view of their characterization as well as their applicability as Portland cement replacement. The main outcomes were as follows: Bentonites were more susceptible to agglomeration compared to kaolinite. They showed higher mass changes during the heat treatment, but lower increases in specific surface areas. On the other hand, for proper thermal activation, they needed a lower temperature. 600°C seemed to be optimal for the bentonitic clays, while for kaolinite the better results were observed in the case of 650°C. Moreover, thermally activated bentonites reached comparable mechanical strengths of blended cement pastes as the one with kaolinitic clay.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

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

Project

<a href="/en/project/GA22-16577S" target="_blank" >GA22-16577S: Alternatives of thermally activated lower grade clays as a partial cement replacement</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

Journal of Physics: Conference Series 2628 (2023)

ISBN

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ISSN

1742-6588

e-ISSN

1742-6596

Number of pages

6

Pages from-to

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Publisher name

IOP Publishing Ltd.

Place of publication

Bristol

Event location

Poprad

Event date

Sep 6, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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