The origin of thermal expansion differences in various size fractions of silica sand

In this study, thermophysical properties of a commonly used silica sand were investigated and their relation to its granulometric and chemical composition was studied. Thermal expansion and differential scanning calorimetry tests were performed on individual fractions of the silica sand together wit...

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Published inInternational journal of cast metals research (Online) Vol. 33; no. 6; pp. 242 - 249
Main Authors Svidró, Judit, Diószegi, Attila, Svidró, József Tamás
Format Journal Article
LanguageEnglish
Published Taylor & Francis 01.11.2020
Subjects
Chemical composition
DSC
foundry sand
moulding material
silica
thermal expansion
XRF
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Summary:In this study, thermophysical properties of a commonly used silica sand were investigated and their relation to its granulometric and chemical composition was studied. Thermal expansion and differential scanning calorimetry tests were performed on individual fractions of the silica sand together with X-ray fluorescence measurements to determine their constituents. It was found that the various size fractions of silica sand exhibit different levels of thermal expansion based on the differences in SiO 2 content. The expansion behaviour of two additional silica samples and a recycled olivine sand was also investigated in relation to its grain size to justify the findings.
ISSN:1364-0461
1743-1336
1743-1336
DOI:10.1080/13640461.2020.1838078