Carbon filled glass ceramic: from waste to wealth

Sapari, Nur Fashiha (2015) Carbon filled glass ceramic: from waste to wealth. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This investigation is carried out to study effect of carbon filled glass ceramic: from waste to wealth in order to produce more porous and lightweight tiles. In this study, physical, mechanical, and thermal properties were studied with six different carbon contents which are 85:0:15, 84:1:15, 80:5:15, 75:10:15, 65:20:15, and 55:30:15 (SLS glass: carbon: ball clay). The powder mixtures of SLS glass, carbon and ball clay was pressed using uniaxial pressing and sintered at 850°C with heating and cooling rate of 2 °C/min and 1 hour soaking time. The apparent porosity, water absorption, and bulk density were measured using ASTM C373. The Vickers microhardness test was determined according to ASTM E384 and carried out using cylindrical pellet with 13 mm dimension. In addition, flexural strength was determined according to the ASTM C1161 with thickness of 5 mm. Rectangular samples with dimension of 65 mm x 15 mm x 5 mm were produced in order to test the flexural strength and thermal properties. Thermal coefficient expansion it performed according to ASTM E228 and measured using dilatometer (DIL 402 C, Netzsch, Germany). The phase and morphology analysis were carried out using the X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) respectively. Physical analysis showed that with increase of carbon content from 0 to 30 wt.%, increased the porosity and water absorption. Hardness properties decreases and CTE increased with increase of carbon content. Morphology shows the present of pores increase in size and number with increase of carbon content. The phase analysis revealed the present of cristobalite and silicon dioxide crystalline phases in the samples.

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