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Title of Journal: Bull Mater Sci

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Abbravation: Bulletin of Materials Science

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Springer-Verlag

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DOI

10.1002/anie.201201523

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0973-7669

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Effect of substitution of sand stone dust for quar

Authors: M K Haldar S K Das
Publish Date: 2012/10/30
Volume: 35, Issue: 5, Pages: 897-904
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Abstract

Quartz and kaolin were partially substituted by sand stone dust a siliceous byproduct of Indian stone cutting and polishing industries in a traditional triaxial porcelain composition consisting of kaolin quartz and feldsper The effect of substitution upon heating at different temperatures 1050–1150boldsymbolcircC were studied by measuring the linear shrinkage bulk density porosity and flexural strength Qualititative phase and microstructural analysis on selected samples were carried out using XRD and SEM/EDX technique The results show that the samples of all the batches achieved higher density 2boldsymbolcdot50 g/cc and almost full vitrification boldsymbol 0boldsymbolcdot1 apparent porosity at around 1115boldsymbolcircC compared to around 1300boldsymbolcircC for traditional triaxial porcelain composition As high as 70 MPa flexural strength was obtained in most of the vitrified samples No significant variation in physicomechanical properties was observed in between the composition XRD studies on selected samples show presence of mainly quartz phase both at low and high temperatures SEM photomicrographs of the 1115boldsymbolcircC heated specimen show presence of quartz grain and glassy matrix Few quartz grains 20–40boldsymbolmum are associated with circumferential cracks around them


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