The micro-structural character of limestone and its influence on the formation of phases in calcined products: natural hydraulic limes and cements
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F21%3A00547864" target="_blank" >RIV/68378297:_____/21:00547864 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1617/s11527-021-01814-7" target="_blank" >https://doi.org/10.1617/s11527-021-01814-7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1617/s11527-021-01814-7" target="_blank" >10.1617/s11527-021-01814-7</a>
Alternative languages
Result language
angličtina
Original language name
The micro-structural character of limestone and its influence on the formation of phases in calcined products: natural hydraulic limes and cements
Original language description
The properties of natural hydraulic binders are directly influenced by the composition of the raw materials used in their production. Depending on the specific composition and conditions in the kiln during burning, the process results in the transformation of the natural raw material and the formation of new phases based on chemical interactions between neighbouring mineral components (solid–state ion migration). A series of laboratory experiments was performed in order to compare the characteristics of various limestones with their properties, phase composition and phase-to-phase relationships after burning. The main objective was to thoroughly understand the relationship between the composition of the raw material and the characteristics of the burnt product. A set of 21 limestone samples were first characterised in terms of raw materials (including their chemical composition), and then individually burnt in an electrical furnace to obtain calcined products. Optical microscopy, SEM–EDS, and XRD-QPA were used to assess the micro-structural character of the material before and after calcination, identifying the relationships between the character and amount of the non-carbonate impurities, the size and character of the carbonate matrix, and the constituted phases. The results show that the chemical composition, expressed as the cementation index, can be used to predict the hydraulicity of calcined limes. However, for this to be reliably applied to an unknown limestone, an understanding of the petrographic characteristics is necessary. The paper demonstrates several different types of phase to phase relationships before and after calcination. It also points out the relation between the micritic and sparitic character of raw materials, and the hydraulicity of burnt products.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/DG20P02OVV028" target="_blank" >DG20P02OVV028: Possibilities of radiocarbon dating of historic mortars</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials and Structures
ISSN
1359-5997
e-ISSN
1871-6873
Volume of the periodical
54
Issue of the periodical within the volume
6
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
27
Pages from-to
217
UT code for WoS article
000717985000001
EID of the result in the Scopus database
2-s2.0-85119009315