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I Putu Ari Sanjaya
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Civil Engineering, Building, Construction & Architecture

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PENGARUH JUMLAH PENGGILINGAN TANAH LIAT SEBAGAI BAHAN PEMBUAT GENTENG TERHADAP KARAKTERISTIK GENTENG KERAMIK DARMASABA I Putu Ari Sanjaya
Jurnal Ilmiah Teknik Sipil Vol. 13, No. 1 Januari 2009
Publisher : Department of Civil Engineering, Udayana University

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Abstract

The results of previous research on standard Pejaten ceramic tile andPejaten ceramic tile with natural pozzolan pumice, complied with the Ceramic TileRegulation of Indonesia NI-19, showed that none of those ceramic tiles resisted thewater infiltration. The tiles constituent only received once grinding during the fabrication process. It was shown from ceramic tile industry in Darmasaba thatthere were physically differences between ceramic tiles with once and twicegrinding. The ceramic tiles with twice grinding process had clear noise, smoothtexture and fine crack at the surface. In order to improve the strength of the ceramictiles, it was decided to conduct a research on ceramic tile characteristic with twicegrinding process.The characteristic of the ceramic tiles to be determined were dry shrinkage, burntshrinkage, bending strength, water infiltration and water absorption. The ceramictile specimens were mixed with a ratio of 1:0.15 of clay : paras pollen batched byvolume with a sufficient water amount. The research variable was a number ofgrinding.The result showed that the ceramic tiles with once grinding had an average waterabsorption of 24,80%, the average water infiltration in 3 hours was 8,6 mm and theceramic tile was un-resistance to the water infiltration. The average bendingstrength of whole tile was 86 kg and the flat surface of the tile was 26 kg. Theaverage of dry and burnt shrinkage was 7,2% and 2,2% in long direction and 6,7%and 2,1% in short direction. The bending curvature equal to 6,35 cm. The tiles withtwice grinding had an average water absorption of 22,25%, the average waterinfiltration in 3 hours was 8,1mm and the ceramic tiles was categorized resistanceto the water infiltration. The average bending strength of whole tiles was 89 kg andthe flat surface of the tiles was 28 kg. The average of dry and burnt shrinkage was6,9% and 1,9% in long direction and 6,3% and 1,8% in short direction. Thebending curvature equal to 6,11 cm. The ceramic tiles were classified as the qualityIV.
PENGARUH PENAMBAHAN POZZOLAN ALAM BATU APUNG TERHADAP KARAKTERISTIK GENTENG (STUDI KASUS GENTENG PLENTONG EX. PEJATEN) I Putu Ari Sanjaya
Jurnal Ilmiah Teknik Sipil Vol. 12, No. 2 Juli 2008
Publisher : Department of Civil Engineering, Udayana University

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Abstract

Research about influence of addition of natural pozzolan pumice in making of Pejaten ceramic tile was conducted. This research was conducted based on condition that in the recent time the tile industries in Bali have experienced degradation of quality compared to existing marketing tile. The natural pozzolan pumice was selected as an additive because this pumice is less exploited and highly contained SiO2 component. If burned this component will yield silica/glass materials and filled the tile void. This research was conducted to obtain the influence of addition of natural pozzolan pumice to ceramic tile characteristics such as bending strength, water absorption, and water infiltration. The ceramic tiles were made by mixing of clay, paras powder, natural pozzolan pumice and water. The mixture consisted of paras powder counted by 20% from clay weight, natural pozzolan of pumice counted by percentage addition of paras powder. Addition of natural pozzolan pumice was 5%, 10%, 15% from paras powder weight. The process started from preparation of materials, mixing of materials, hulling, molding, draining and burning at the stove for about 12 hours with temperature of 800oC to 1000oC. Results of the research showed that the addition of 15% natural pozzolan pumice resulted in smallest water absorption, longest time of water infiltration. The value of bending load of the tile was 71,30 kg and bending strength was 0,675 kg/mm2. For plain part of the tile, the average bending load was 14,40 kg and bending strength was 0,250 kg/mm2. The water absorption rate was equal to 26,39% and time of water infiltration was 99 minutes. Shrinkage happened in tile with addition of 15% of natural pozzolan pumice with contraction value of 7,27% in long and contraction value of 9,20% in wide. Standard tile had smaller value of bending load and bending strength than the tile with 15% of natural pozzolan pumice addition, with were 54,90 kg and 0,520 kg/mm2, respectively. For the plain part of standard tile, the value of bending load and bending strength were 11,80 kg and 0,205 kg/mm2, respectively. Largest water absorption value of tile occurred in ceramic tile with addition of natural pozzolan pumice of 5%, which had value of 27,60%. These tiles had fastest water infiltration time with a value of 68 minutes.
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