한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2010년도 추계 학술발표회
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- Pages.969-978
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- 2010
연직배수재로서 순환골재와 쇄석의 활용방안
Utilization of Recycled Aggregates and Crushed Stone as Vertical drains
- Lee, Dal-Won (Dept. of Agricultural Engineering, Chungnam Univ.) ;
- Lee, Jung-Jun (Dept. of Agricultural Engineering, Chungnam Univ.) ;
- Kim, Si-Jung (Dept. of Agricultural Engineering, Chungnam Univ.) ;
- Lee, Young-Hak (Dept. of Agricultural Engineering, Chungnam Univ.)
- 발행 : 2010.09.09
초록
In this study, a laboratory model test on utilization of recycled aggregates and crushed stone as vertical drains to use alternative material of sand in soft ground is performed. The vertical and horizontal coefficient of permeability of the recycled aggregates and crushed stone showed largely 1.2~4.0 times and 3.0~3.3 times greater than sand, respectively. Therefore, it showed enough to be an alternative material to the sand which had been being used as the vertical and horizontal drainage material before. The variations of pore water pressure with time showed constantly regardless of the load in all vertical drainage materials. When water level drops suddenly, the pore water pressure of the recycled aggregate and crushed aggregate is reduced to nearly zero. Therefore, it was applicable to the field because discharge capacity was similarity to that of sand. The settlement in crushed aggregates and recycled aggregate decreases gradually with the load increase. When water level drops suddenly, earth pressure in all drains materials was evaluated the equivalent drainage capacity similarity to sand because it show approaching the nearly zero.