Red Yellow Soil is a Korean residual soil formed from the weathering of rocks,and is locally known as hwangtoh due to its reddish-yellow appearance. In thisstudy, Red Yellow soil was obtained from Gochang, Korea. It mostly consists of silt,halloysite, kaolinite, quartz, and illite. It has a plastic limit and liquid limit of 35%and 52.4%, respectively, and a specific gravity of 2.60. The soil can be classified assandy lean clay (CL) due to its particle size distribution (i.e., D60 = 0.065 mm,D50 = 0.055 mm, and D10 = 0.040 mm), as shown in Fig. 2. Further descriptions ofRed Yellow soil can be found in Chang and Cho [11]. Red Yellow soil representsclayey soil in this study.