Development of simple and environmentally friendly soil solidification technique

Abstract

We developed and studied a simple and environmentally friendly soil solidification technique utilizing biomineralization or bio-cementation process. The microorganism used for this technique was baker's dry yeast. To adjust the pH of the soil and promote mineralization, agricultural fertilizer was used. Sandy soil was solidified by mixing the materials, adding water, and letting them cure. In terms of reproducible results, it was possible to produce solidified bodies with the same strength as cement-improved soil. In our study, only environmentally friendly materials have been used. Therefore, this technique can be applied not only for ground improvement, but also for other various applications such as sandy soil utilization.