In order to reduce self-weight of structural elements, the use of SCP(Steel Concrete Plate) is getting increased. Since SCP has complicated sectional shape and includes large amount of studs, the use of high-filling concrete is required. Therefore, in this study, It was evaluated the filling performance of filling concrete for SCP module according to our mix proportion. Resultingly, the concrete effectively filled the large-sized SCP module.

This paper describes the performance of the module-type drying apparatus for the composting of a food waste. The drying apparatus mainly consists of a screw-type food waste agitator, an air exhaust blower, a heat supply tube and a heat source. Two different discharging flow conditions of the drying apparatus, 4 and 5 m3/min, are introduced. Partly dried by-products after six hours drying operation in the drying apparatus is obtained while drying temperature keeps constant of 60oC. It is noted that the by-products needs to sufficient decay period for the composting. Deodorizing apparatus having a zigzag flow and a nozzle, which is connected to the drying apparatus, is also designed to enhance the removing performance of the odor. Throughout experimental measurements, time to the drying temperature of 60oC near the screw-type food waste agitator is shortened as discharging flow rate of the system decreases. The moisture content decreases to 50 percent after operation for 4 hours. Furthermore, the odor of the food waste is satisfied with the environment exhaust standard through the deodorizing apparatus.

As an effort to enlarge the territory of the county, many researchers have been studying floating foundation system. The procedure to build such structure needs prestressing and the joint that unify the precast concrete modules. Most importantly, the performance of aqua-epoxy used joint between modules is a critical factor of the structure, thereby it is important to evaluate the performance of it. Hence, this study tests the performance of the joint due to the joint length and the material properties of aqua-epoxy. The result showed that the specimen of 1cm joint length using 2% silica-fume mixed aqua-epoxy has the optimum load carrying capacity.

This paper is a part of the development on the safe navigation model of tugs and barges in Korea waters. desk-top tug-barge simulator is to train the crew of tugs and barges, especially tugs' crew. It is connected with steering and engine telegraph console and winch control console, and can describe three types of operation mode for a tug-barge working unit, towing mode, side by side and push mode. It can also record and assess each simulation run. The evaluation module can confirm the result of a finished simulation run and help trainees to find and correct their faults, and it is composed of result evaluation and process evaluation.