• Proceedings of the Korean Institute of Building Construction Conference
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• 2009.05b
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• pp.33-39
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• 2009

Asphalt waterproofing method has a long history over 80years since introduce to domestic market. This method has a good point as high water proofing not permeable to water by material performance of bitumen, In spite of high waterproofing, the application has become decreased. This asphalt method has some problem such as work safety, low workability by complicated work process, environmental problem in job site, it should be solve by complementary measures. 'Therefore, in this paper, suggest the principle of high pressure spray by heat cycle type equipment by analysis of exist problem and materials investigation. And. study and examine the spray type degeneration rubberized asphalt membrane materials to adopt job site. Moreover, suggest the evidence by inspection about waterproofing performance by Korean Industrial Standard through the performance test of the spray type degeneration rubberized asphalt membrane materials.

• Journal of Conservation Science
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• v.29 no.4
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• pp.345-354
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• 2013

This study analyses geochemistrical, microscopic, mineralogical characteristics of coals which have been collected from in and out of the shipwreck No 1 of Mado island during underwater excavation in Taean. The result from mineralogical and geochemical analysis reveals that the specific gravity of the coals is $1.28g/cm^3$. Considering that coals contains 10% mineral of it and the specific gravity of the pure is $1.15g/cm^3$, it is believed that the collected coals would be lignite or biturminous coal. The X-ray diffraction analysis which displays the peak of $2{\theta}$ is 20~25C degree, proves that the collected coals would be categorised as low rank coal. The collected coals is composed of: 93%-94%(93.5%) of vitrinite maceral group, 5%-6%(5.5%) of exinite maceral group, and 1% of inertinite maceral group. In addition, the average of reflection rate is $R_{mean}$: 0.627 showing that it would be either high volatile bituminous C coal or sub-bituminous C coal. Such result confirms that the coal is sub-bituminous C or high volatile bituminous C coal in accordance with the U.S Bureau of Mine(USBM) classification system. The element analysis reveals that the coal is the coking coal which is grouped as the bituminous coal. Comparative analysis between the coals of Mado Shipwreck No 1 and domestic coals shows that the coals of Mado Shipwreck is similar to the bituminous coal used in the area of Janggi in Pohang city.