Abstract
In recent years, effective use of regional resoures have received much attention in constructing infrastructure. The purpose of this study is to examine material properties of the magnesium improved soil mixed with rice husk ash (RHA) and rice straw fibers (RSF) in splitting test. Splitting test was conducted on three types of soil (normal, mixed with RHA, and mixed with RHA and RSF). Fracture process was qualitatively evaluated by image analysis and acoustic emission (AE). These results indicate that RHA and RSF change the mechanical property of magnesium improved soil. Three improved soils tend to different characteristics of AE in spitting fracture. Image analysis and SiGMA analysis suggest a concentration of horizontal stain and internal fracture process.
