Expansive Soil Improvement Using Electrochemical Injection

Abstract

According to the Geological Map of Indonesia, the distribution of espansive soils in Indonesia, especially in Sumatra and Java, is very large. These soils, which have the mineralogy of illite, kaolite and montmorillonite, are known to have very high growth properties that affect the bearing capacity of the soil. Due to the mineralization nature, swollen soil is easy to retain water during the rainy season, leading to swelling and conversely, it is easy to shrink in summer. Therefore, Indonesia with its hot and rainy season has a great influence on the land expansive. Along with the increase in road construction through the Strategic National Highway Projects, it is likely that the project will be located in the expanded land area. Therefore, it is necessary to have measures to improve the soil to increase the shear strength of the soil. The bearing capacity of the soil can be determined from one of the values of the shear resistance of the soil. West Java is one where there are many types of soil. While this area is included in a national strategic project, namely the construction of the Ja-Pek II toll road. Soil improvement measures are taken to improve soil properties in order to increase the bearing capacity of the soil. Chemical soil electrolysis is an alternative method that can be used, with chemical solutions that are not harmful to the environment. The aim of this study was to determine the improvement in the bearing capacity of swollen soils that were improved by electrochemical spraying by examining one of the soil mechanical properties.