Stabilisasi Tanah Gambut Dengan Teknik Bio-Grouting Melalui Bantuan Bakteri

Afianda, Nanda (2022) Stabilisasi Tanah Gambut Dengan Teknik Bio-Grouting Melalui Bantuan Bakteri. Other thesis, Universitas Islam Riau.

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Abstract

In the field of civil engineering, land is a place where various types of construction or structures are established, both building structures and highway constructions. In construction work, the construction of a dirt highway is one that must be considered. The aim of the study was to determine the percentage that was effective in adding bacterial reagents using the bio-grouting technique with the help of Bacillus subtilis bacteria on changes in the CBR (California Bearing Ratio) value against the ripening period. This research was conducted in a laboratory, by testing the physical properties of the soil and the bearing strength of the soil (CBR) with variations in the addition of bacterial reagents of 5%, 10%, 15% and 20% with curing time of 1 and 4 days. The results of the research on peat soil have a specific gravity of 1.53, water content of 351.092 %, maximum water content (OMC) of 132% and maximum dry density value (γd max) of 0.40 gr/cm3. The largest CBR value of native peat soil was at 4 days of curing of 0.76%. After being stabilized with the mixture, the largest CBR value was in the variation of the addition of 5% bacterial reagent with a 4-day curing time of 0.76%. Based on the research that has been done, it can be concluded that adding Bacillus subtilis bacterial reagent cannot be used as an additive for improving peat soil, so it can be added with other mixed materials.

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