Development of Young's modulus of natural illitic clay during the heating and cooling stages of firing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F19%3A00542062" target="_blank" >RIV/61389021:_____/19:00542062 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/19:10406670

Result on the web

<a href="https://www.cambridge.org/core/journals/clay-minerals/article/abs/development-of-youngs-modulus-of-natural-illitic-clay-during-the-heating-and-cooling-stages-of-firing/164CB9840664B3753CF1C01BDD947C84" target="_blank" >https://www.cambridge.org/core/journals/clay-minerals/article/abs/development-of-youngs-modulus-of-natural-illitic-clay-during-the-heating-and-cooling-stages-of-firing/164CB9840664B3753CF1C01BDD947C84</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1180/clm.2019.33" target="_blank" >10.1180/clm.2019.33</a>

Result language

angličtina

Original language name

Development of Young's modulus of natural illitic clay during the heating and cooling stages of firing

Original language description

Illitic clay from the locality of Liepa, Latvia, was investigated using dynamic thermomechanical analysis during the heating and cooling stages of firing. Differential thermal analysis, thermogravimetry, thermodilatometry, X-ray diffraction and porosimetry were also performed to shed light on the processes influencing the elastic properties of clay. The increase in the Young's modulus (YM) at low temperatures was linked to the release of physically bound water. Above 850°C, the bulk density and YM both increased as a consequence of sintering. The YM was more sensitive to the progress of sintering compared to dimension changes. The YM values continued to increase during cooling until the glass-transition temperature was reached. At this temperature, the first microcracks caused by the differences in thermal expansion coefficients of the present phases were expected to appear. The YM showed a sharp V-shaped minimum at the β → α transition of quartz, which was a result of alternation of the mechanical radial stresses around the quartz grains. When the transition of quartz was completed, the YM continued to decrease because microcracks were still being created at the boundaries between the different phases. The decrease of the YM during cooling from the glass-transition temperature down to room temperature was ∼50% for all of the firing temperatures and isothermal periods applied.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Clay Minerals

ISSN

0009-8558

e-ISSN

1471-8030

Volume of the periodical

54

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

25

Pages from-to

229-233

UT code for WoS article

000489346900001

EID of the result in the Scopus database

2-s2.0-85072926193