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Abstract
Sintering Mechanism of Zeolite Ceramic Tile Body with the Addition of Slate Waste
Arseeyah Makman1 Danupon Tonnayopas2* and Suchart Chantaramanee3
Zeolite and slate powder (SP) used as raw materials in the production of ceramic tiles body was investigated. The slate powder content in the batches was varied from 10 wt%, 20 wt% and 30 wt% by replacing the zeolite content. These mixtures were molded using uniaxial hydraulic pressing with pressure of 100 bars. All specimens were cured at ambient temperature for 8 h. then heated at 100๐C about 8 h. before fired in an electrical furnace at different temperature of 1,100, 1,150 and 1,200๐C. Testing result indicated that there was an increase in the bulk density with the increase in SP content. However, the addition of SP in the matrix improved the physical and mechanical properties of the zeolite ceramic tile. Particularly, the addition of SP as high as 30 wt% and firing at 1,200๐C result in the minimum water absorption of 9.30%. The maximum flexural strength of 88.27 MPa can be obtained by adding 10 wt% of SP. It can be met of Thailand Industrial Standard (TIS 37) for floor tile, class high absorption.