Study of the influence of the secondary raw materials on microstructure and properties of calcium silicate composite
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU135061" target="_blank" >RIV/00216305:26110/19:PU135061 - isvavai.cz</a>
Result on the web
<a href="http://webu3.vgtu.lt/uni/stf/mbmst/61-66_MBMST_129.pdf" target="_blank" >http://webu3.vgtu.lt/uni/stf/mbmst/61-66_MBMST_129.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3846/mbmst.2019.129" target="_blank" >10.3846/mbmst.2019.129</a>
Alternative languages
Result language
angličtina
Original language name
Study of the influence of the secondary raw materials on microstructure and properties of calcium silicate composite
Original language description
Calcium silicate composites are a widely used building material, especially autoclaved aerated concrete or sand-lime bricks. The physico-mechanical properties of these materials depend on their microstructure. Microstructure is characterized by the content of crystalline calcium silicate compounds that arise during autoclaving. This is in particular the tobermorite mineral, which carries the mechanical strength of the composite. This paper focuses on the influence of secondary raw materials on properties and microstructure of the calcium silicate composite. Secondary raw materials were selected as slag from the combustion of lignite and ground glass. Mixtures of composites were selected with respect to the required C/S molar ratio of 0.73. The hydrothermal treatment was carried out at a temperature of 190°C and a residence time of 4, 8 and 16 hours. The microstructure of calcium silicate composites and autoclaved aerated concrete was studied. The use of slag resulted in an increase in the intensity of the diffraction line of tobermorite by X-ray diffraction analysis as well as the use of glass. The difference was particularly evident in the shape of the tobermorite crystals. Long strong crystals were detected in the sample with slag, while the sample with glass exhibited low tobermorite leaves. Porous structure of autoclaved aerated concrete with slag was uniform, unlike samples with glass. Both materials have a positive effect on the increase in compressive strengths of the samples.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
20101 - Civil engineering
Result continuities
Project
<a href="/en/project/GA17-14198S" target="_blank" >GA17-14198S: Kinetics of silicon micro-structure creation in dependence on hydrothermal conditions and type of used materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
MODERN BUILDING MATERIALS, STRUCTURES AND TECHNIQUES MBMST 2019
ISBN
978-609-476-197-3
ISSN
2029-9915
e-ISSN
—
Number of pages
6
Pages from-to
61-66
Publisher name
VGTU Press “Technika” scientific book No 2019-044-K
Place of publication
Lithuania
Event location
Vilnius
Event date
May 16, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000661870600009