Open AccessEvaluation of carbonate precipitation methods for improving the strength of peat soil
Author(s) -
Muhammad Rizki Ramadhan,
Heriansyah Putra
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/622/1/012032
Subject(s) - carbonate , peat , soil science , leaching (pedology) , precipitation , bulk density , geology , soil water , mineralogy , materials science , metallurgy , ecology , meteorology , physics , biology
This research was carried out to evaluate the potential improvement of the strength of peat soil with the carbonate precipitation method. The grouting solution’s optimum combination was determined and mixed to soil sample with a various density of 1.15, 1.20, and 1.25 g/cm 3 . The mass of precipitated carbonate within the soil and its effect on peat soil’s increasing strength was evaluated by the unconfined compression (UCS) test. The mass of precipitated carbonate within peat soil was evaluated by acid leaching method, respectively. The UCS test showed that the strength of treated peat soil had improved significantly. The treatment using carbonate precipitation brings about an improvement of 38% to 48% compared to the untreated sample. The maximum strength of 375.12 kPa was achieved at a density of 1.25 g/cm 3 . The result of this study also indicated that the initial density has no significant impact on the improvement of precipitated carbonate in peat soil. A relatively similar precipitated carbonate of 2-3% of soil mass was formed in the entire soil sample. This study elucidated that the carbonate precipitation method is a potential method to improve the peat soil’s shear strength.