Sustainability of Calcite Precipitation Method for Soil Stabilization: A review
Heriansyah Putra (a*), Hideaki Yasuhara (b), Naoki Kinoshita (b), Willis Diana (c)
(a) Department of Civil and Environmental Engineering, Bogor Agricultural University, Bogor, Indonesia
(b) Department of Civil and Environmental Engineering, Ehime University, Matsuyama, Japan
(c) Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta, Yogyakarta, Indonesia
Abstract
Calcita induced precipitation methods (CIPM) are the recently potential technique in geotechnical engineering to improve the engineering properties of sandy soil. One of the most promised methods is enzyme-mediated calcite precipitation (EMCP). In this technique, the mixed solution composed of reagents and an enzyme of urease, which produces calcite, is used as the grouting solution. The precipitated calcium carbonate in sandy soil provides bridges between the grains of sand, restricting their movement and, thus, leading to improving the strength and stiffness. This paper presents a review of the application of EMCP for soil improvement and discusses the additional material and their effect on the treatment process and engineering properties of the sandy soil. Envisioned application, potential advantages and the limitation of EMCP for soil stabilization are also presented and discussed. Finally, the primary challenges and the development opportunities for future research are briefly discussed.
Keywords: Calcite Precipitation, EICP, EMCP, Enzyme, Soil improvement
Topic: International Symposium of Civil, Environmental, and Infrastructure Engineering