Thermal, ceramic and technological properties of clays used in production of roofing tiles - principal component analysis
This research describes a study of 11 selected samples of brick clays applied in roofing tile production, by using simultaneous thermal analysis. Additionally, the laboratory-sized samples were prepared and fired (850-950 °C) and technological properties were determined. Mathematical analys...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
International Institute for the Science of Sintering, Beograd
2018-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2018/0350-820X1804487V.pdf |
| Summary: | This research describes a study of 11 selected samples of brick clays applied
in roofing tile production, by using simultaneous thermal analysis.
Additionally, the laboratory-sized samples were prepared and fired (850-950
°C) and technological properties were determined. Mathematical analysis was
applied to sum all the experimental results and help discriminate the samples
by their behavior during firing. The samples, very similar according to
mineralogical and chemical content, as well as granulometry tests, were
successfully grouped using principal component analysis (PCA). The PCA was
used to explore and easily visualize the differences between samples. The PCA
performed for differential thermal analysis (DTA), differential scanning
calorimetry (DSC) and differential thermogravimetry (DTG) curves clearly
showed that the heat flow was mainly influenced by carbonate content and its
grain size, while DTG discriminated samples according to the contents of clay
minerals and carbonates. In addition, dilatometry analysis revealed which
samples underwent the highest densification during the firing process. The
PCA analysis of fired products properties showed that the highest
correlations were between water absorption with firing shrinkage and
compressive strength. [Project of the Serbian Ministry of Education, Science
and Technological Development, Grant no. III45008, Grant no. TR31055 and
Grant no. III45007] |
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| ISSN: | 0350-820X 1820-7413 |