Open AccessMicrobially induce calcite precipitation as bio grouting by bacillus subtilis on its shear strength parameter effects on organic soil (peat) from Siak Regency Riau Province Indonesia
Author(s) -
Firman Syarif,
M. F. Hardianto,
Gian Mahadika Davino
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/615/1/012045
Subject(s) - peat , shear strength (soil) , environmental science , precipitation , calcite , geotechnical engineering , shear (geology) , soil science , environmental engineering , soil water , geology , mineralogy , ecology , meteorology , geography , petrology , biology
Contemporarily, the use of bacterial Calcite precipitation (bio grouting) is popular as a ground improvement technique for sandy soil. However, this was not frequently applied to organic or peat variety. Meanwhile, on the island of Sumatra, the province with the largest peat terrain is Riau, expanding an area of ± 4.04 million Ha, which is 56.1% of the total mulch land in the region, where Siak is one of the districts, possessing a fairly large portion. Furthermore, numerous problems ensue due to this structure, especially during the construction of infrastructure. Therefore, this study focused on bacterial Calcite precipitation from Baciluus Subtilis, and its effect on the Shear Strength parameters of organic soil, where a special injection system was prepared for inducing the bacterial solution to the samples, which were tested by UCS tool, in order to ascertain shear strength parameter, after 3 days. Moreover, through this research, it is hoped that the technique adopted improves engineering performance, especially in the areas of increasing shear strength parameters of organic or peat soil. Hence, this procedure is suitable and also assists in reducing challenges in construction of infrastructure within Siak district.