The nature of kaolinitic clays and their impact on the performance of SCM

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00372818" target="_blank" >RIV/68407700:21110/23:00372818 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1742-6596/2628/1/012032" target="_blank" >https://doi.org/10.1088/1742-6596/2628/1/012032</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/2628/1/012032" target="_blank" >10.1088/1742-6596/2628/1/012032</a>

Result language

angličtina

Original language name

The nature of kaolinitic clays and their impact on the performance of SCM

Original language description

Nowadays, metakaolin is currently widely used as a supplementary cementitious material in the concrete industry. However, there are significant differences between kaolinitic clays, which can be used for the production of metakaolin. They can vary in the granulometry as well in the mineralogical composition (more precisely the content of varying impurities can differ widely). The main aim of this article is to assess the impact of mentioned variation on the thermal activation of such kaolinitic clays. For this purpose, four clays from the Czech Republic were chosen and examined. Primarily, their characterization composed of XRD, DSC, granulometry, and specific surface area was studied. Then these clays were thermally activated at temperatures from 500°C to 650°C. Afterwards, the changes in determined properties were investigated. Then the samples of blended cement pastes with a replacement level of 15% were produced, and basic physical and mechanical properties were determined. It was proved that for particular clays, different temperature treatments were optimal, which further lead to varying results of the mechanical performance of blended cement-based pastes. Such variation can be linked to the phase composition of studied clays.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

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

—

ISSN

1742-6588

e-ISSN

1742-6596

Number of pages

6

Pages from-to

—

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

—