Quantification of microstructural changes in limestone cement paste stored in sulfate environment at low temperature
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F20%3A00532112" target="_blank" >RIV/68378297:_____/20:00532112 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.4028/www.scientific.net/SSP.309.3" target="_blank" >https://doi.org/10.4028/www.scientific.net/SSP.309.3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.309.3" target="_blank" >10.4028/www.scientific.net/SSP.309.3</a>
Alternative languages
Result language
angličtina
Original language name
Quantification of microstructural changes in limestone cement paste stored in sulfate environment at low temperature
Original language description
Portland-limestone cement paste specimens were stored in magnesium sulfate solution at 5°C for 6 months, the occurring microstructural changes have been monitored on a monthly basis. Extent of deterioration was quantitatively assessed with different techniques. The X-ray microcomputed tomography was employed to describe non-invasively the pore structure and extend of deterioration. X-ray powder diffraction and infrared spectroscopy were used to characterize the phase changes occurred in the course of the sulfate attack. Compressive strength tests reflected the effect of the process on mechanical performance. The results indicate the rapid degradation of the system, owing, mainly, to crack formation, expansion, and finally loss of cohesion between the deteriorated parts of the specimens and the sound cement matrix, as a consequence of the formation of new phases. The progress of an irregular deterioration front was observed. The presence of complex phases (thaumasite, ettringite) was proved, however, the deteriorated parts of the specimens mostly consisted of gypsum.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GJ18-26056Y" target="_blank" >GJ18-26056Y: Experimental quantification and modelling of deterioration in Portland-limestone cement pastes affected by thaumasite sulfate attack</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Solid State Phenomena
ISBN
978-303571668-9
ISSN
1012-0394
e-ISSN
1662-9779
Number of pages
5
Pages from-to
3-7
Publisher name
Trans Tech Publications
Place of publication
Baech
Event location
Hradec Králové
Event date
Nov 20, 2019
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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