The Effect Of Sintering Temperature And Clay Addition On Glass Ceramic Produced From Recycled Glass For Structural Application (CIP Method)

Nur Rifhan, Rosli (2010) The Effect Of Sintering Temperature And Clay Addition On Glass Ceramic Produced From Recycled Glass For Structural Application (CIP Method). Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of this project was to determine the effect of sintering temperature and clay addition on glass ceramic produced from recycled glass. In this study, recycled glass of soda lime silica glass is used as main raw materials and ball clays as filler. The scope of this project mainly focused at the effect of sintering temperature and soda lime silica glass to ball clay weight ratio on glass ceramic produce from recycled glass for structural applications. The glass powders are prepared by crushing to a particles size distribution < 75 µ m. The SLSG powder are then mixed with the ball clay according to the ratio of SLSG to ball clay of 95:5 wt.%, 90:10 wt.% and 85:15 wt.%. The glass ceramic samples are fabricated using uniaxial pressing and cold isostatic pressing with constant pressure at 40 MPa. The best mixing ratio is 85:15 wt.% ratio of SLSG to ball clay because the presence of ball clay helps the uniformity of the green body. Sintering process is conducted at three different temperatures at 750°C, 850°C and 950°C with 1 h holding time. There are several changes in terms of shape, color and appearance after the sintering process. Physical analyses and mechanical testing of the samples are carried out according to the specific ASTM standard of testing. For physical and mechanical analyses, majority the results showed that the increasing of temperature and percentage of ball clay had significantly increased the porosity and water absorption percentage, bulk density and microhardness properties of the glass ceramic produced. Microstructure analysis showed the surface of glass ceramic samples and phase analysis identified quartz and calcite phases is presence in the sample produced. Temperature 850°C with 85:15 wt.% ratio of SLSG to ball clay is chosen as the optimum parameter to produced new glass ceramic material produced from recycled glass.

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