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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Geosynthetic Society
Journal Basic Information
Journal DOI :
Korean GeoSynthetics Society
Editor in Chief :
Volume & Issues
Volume 7, Issue 4 - Dec 2008
Volume 7, Issue 3 - Sep 2008
Volume 7, Issue 2 - Jun 2008
Volume 7, Issue 1 - Mar 2008
Selecting the target year
Engineering Characteristic of High Density Expansion Materials for Structure Restoration Technology
Shin, Eun-Chul ; Cha, Yong-In ;
Journal of the Korean Geosynthetic Society, volume 7, issue 2, 2008, Pages 1~5
The differential settlement on ordinary concrete buildings and paved roads are often occurred and which caused the failure of structure. The grouting method can be used for correcting the settlement of the structure. However, the grouting method has a disadvantage like that it takes a long time period to get a desired strength, and it is not a continuous in the phase of reinforced effect. In this paper, as an injecting material called GPCON to complement disadvantage, it is estimated about the characteristic that has a high-density expansion. With the changing of ground conditions and amount of injection, the change of physical strength on compression, the stability against chemical material are studied through the filming of SEM. The physical strength with compression is developed to high strength due to mixing with other material. It is not react with most of the material on chemical conditions except the component of alcohol. Through the SEM test. it is confirmed that the strength of material was increased as formation is being densified.
Case History of Sea Dyke Construction Using Geotextile Mat
Park, Jeong-Jun ; Kim, Sung-Hwan ; Shin, Eun-Chul ;
Journal of the Korean Geosynthetic Society, volume 7, issue 2, 2008, Pages 7~13
Geosynthetic damage has attracted a major attention since the introduction of geotextiles for civil construction applications. Geotextile is one of the most useful and effective polymer material in civil construction works and the main function of geotextile is separation, reinforcement, filtering and drainage. Recently, because of the shortage of natural rock, traditional forms of river and coastal structures have become very expensive to build and maintain. This study tries to suggest the method of estimating valid stitching rate and the methodology of sea dyke construction over soft soils for more reasonable application of geotextile mat by studying tensile strength, bursting strength, punching strength, tear strength that are considered when analyzing and designing geotextile mat of a field.
Laboratory Test and Field Study of Soft Ground Improvement Effect by Using Various PVDs
Shin, Eun-Chul ; Nazarova, Zhanara ;
Journal of the Korean Geosynthetic Society, volume 7, issue 2, 2008, Pages 15~21
The advantages of prefabricated vertical drains over conventional sand drains include their relatively low costs, less disturbance to the soil mass, the easinees of installation, and their flexibility which ensures the integrity of the drains during installation. This study tested the change of discharge capacities with respect to the hydraulic gradients for each lateral pressure. From the test results, as increases the overburden pressure, the clay soil is being consolidated, and also lateral pressure to the PVD specimen is increased. Therefore, the discharge capacity is decreased. The size of opening space in the core of PVDs is proportionally related to the discharge capacity. The numerical analysis was performed with utilizing computer simulation with considering field conditions. The results of numerical analysis are compared well with the field measurements.
Experimental Study on Recycled-Aggregate Porous Concrete Pile Method
You, Seung-Kyong ; Lee, Chang-Min ; Kim, Se-Won ; Choi, Hang-Seok ;
Journal of the Korean Geosynthetic Society, volume 7, issue 2, 2008, Pages 23~29
The purpose of this research is to assess the application of recycled-aggregate that is gained from construction wastes as the material of compaction pile method. At the same time, the development of the new technique rectifies defects of the existing compaction pile method for soft ground improvement. In this research, laboratory chamber tests were carried out analyzing the effect of the soft ground improvement by porous concrete pile using recycled aggregate. Through the results of the laboratory chamber tests, the variations of settlement, excess pore pressure, and increment of the vertical stress with time and the behavior of the composite ground were elucidated.
Characteristics of Cut Slopes in Baekyang Mountain Area, Busan
Song, Young-Suk ; Chae, Byung-Gon ; Kim, Kyoung-Su ; Cho, Yong-Chan ;
Journal of the Korean Geosynthetic Society, volume 7, issue 2, 2008, Pages 31~39
The information of cut slope in Baekyang Mt. area, Busan is investigated in order to construct the Slope Management System in Urban Area. The slope inspection sheet is made to record the characteristics for cut slopes, and that is capable to be inputted slope information systematically. The cut slopes in Baekyang Mt. area are consisting of 103 slopes. Most of the cut slopes are constructed in cutting slope and retaining wall (CR). The school is mostly distributed adjacent to cut slopes. The average traverse of cut slopes is approximately 122m, and the average height is approximately 18m. The slopes combined with soil and rock are mostly distributed. The retaining wall was installed in the toe part of cut slope in order to increase the slope stability, and the additional reinforcement methods including the anchor, drainage, preventing rock fall, shotcrete and vegetation were installed in the walls and slopes.
Wall Displacement of Geosynthetic Reinforced Soil Walls with Different Surcharge Loads - Model Test
Lee, Kwang-Wu ; Cho, Sam-Deok ;
Journal of the Korean Geosynthetic Society, volume 7, issue 2, 2008, Pages 41~47
This paper describes the results of model experiments in the laboratory, which were conducted to assess the behavior characteristics of geosynthetic reinforced soil walls according to different surcharge loads and reinforcement types. The model walls were built in the box having dimension, 100 cm tall, 140 cm long, and 100cm wide. Three types of geosynthetics, geonet, geogrid A and geogrid B, are used as the reinforcements. Decomposed granite soil (SM) was used as a backfill material. Seven model walls are constructed and tested. After the construction of the model wall, the LVDTs are installed to obtain the displacements of the wall face. As the results of the model tests, the maximum horizontal displacements of the model walls occurred due to uniform surcharge pressure were measured at the 0.7H from the bottom of the wall. The more the reinforcement strength increases, the more the wall displacements decrease, and also the reduction ratio of the wall displacement decrease with increasing the surcharge pressure.
A Comparative Study on the Feasibility of Geosynthetics Clay Liner and Compacted Mixing Material Using By-products from Sewage Sludge to the Final Cover Materials in Landfills
Jeong, Ji-Hoon ; Lee, Jai-Young ; Lee, Myung-Ho ;
Journal of the Korean Geosynthetic Society, volume 7, issue 2, 2008, Pages 49~52
Most of waste sludge has generally been disposed in landfill site or dumped in the ocean, which will be banned by the content of its heavy metals according to London Dumping Convention in Korea. Therefore, environmentally friend methods are urgently required for the treatment and disposal of the sewage sludge. Thermal hydrolysis is one of the good treatment methods to solve the sludge problems. In this study, the physical and environmental testing was conducted to evaluate the feasibility of by-product cake from the thermal hydrolysis as liner or cover materials in landfill.