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nd
The 2 International Seminar of Science and Technology
“Accelerating Sustainable innovation towards Society 5.0”
ISST 2022 FST UT 2022
Universitas Terbuka
ANALYSIS OF CBR VALUE ON PEAT OF OGAN
KOMERING ILIR

Siti Muslikah*, Ida Yuliana, Boby Kamal, Mustafirin

University of Islamic Ogan Komering Ilir (INDONESIA)

*Corresponding author: muslikah.siti@gmail.com
Abstract
Peat soil has unique charateristics when viewed from the perpective
of its CBR value. This is because the soil contains soil-forming
materials, in addition to its high acidity and water content, so that it will
affect the bearing capacity of the soil and the value of the California
Bearing Ratio (CBR). Research on CBR values in Ogan Komering Ilir
Regency was carried out in Tulung Selapan Ilir Village, Tulung
Selapan District, and Sumber Hidup Village, East Pedamaran District.
The value of the California Bearing Ratio (CBR) of peat soil in Tulung
Selapan Ilir Village is 2.83%. Meanwhile, the CBR value of the peat
soil in Sumber Hidup Village is 2.82%. According to Bowles, the CBR
values of the two locations are categorized as “very poor”. Meanwhile,
based on Bina Marga, including road subgrade, the category is bad.
Keywords: Peat soil, California Bearing Ratio (CBR), Ogan Komering
Ilir

1 INTRODUCTION
Peat soil is formed from piles of dead plant remains, both rotted and
not. The stockpile continues to grow because the decomposition
process is hampered by anaerobic conditions and/or other
environmental conditions that cause the low level of development of
decomposing biota. The formation of peat soil is a geogenic process,
namely the formation of soil caused by deposition and transportation
processes, in contrast to the mineral soil formation process which is
generally a pedogenic process [1]. Peats are identical to the remains
of plant and animal remains that have rotted for years. When disturbed

ISST 2022 – FST Universitas Terbuka, Indonesia 71
International Seminar of Science and Technology “Accelerating Sustainable
Towards Society 5.0