Page 95 - Proceeding The 2nd International Seminar of Science and Technology : Accelerating Sustainable Innovation Towards Society 5.0

nd
The 2 International Seminar of Science and Technology
“Accelerating Sustainable innovation towards Society 5.0”
ISST 2022 FST UT 2022
Universitas Terbuka
moisture content of the test object, immersion, penetration test,
drawing of the relationship curve between load and penetration, and
determining the CBR value. The design CBR can also be determined
through this CBR test, namely by using the relationship curve between
the CBR and the dry density of each test object. Corrected load values
shall be determined for each specimen at penetrations of 2.54 mm
(0.10 in) and 5.08 mm (0.20 in). The CBR value, expressed in percent,
is obtained by dividing the corrected load values on the 22.54 mm
(0.10 in) and 5.08 mm (0.20 in) penetrations by the standard loads of
13 kN (3000 lbs) and 20 respectively. kN (4500 lbs), and multiply by
100 in Equation 1.

= 100 (1)

CBR is generally selected at 2.54 mm (0.10 inch) penetration. If the
CBR at 5.08 mm (0.20 in) penetration is greater than the CBR at 2.54
mm (0.10 in) penetration, the CBR test must be repeated. If, after
repeated, the same results are obtained, a CBR at 5.08 mm (0.20 in)
penetration should be used [12]. Some of the lowlands found in the
Ogan Komering Ilir Regency area are peat soil, so this will be a
problem for the implementation of construction work for buildings,
roads, bridges, as well as for regional development. This is due to the
physical and mechanical properties of peat soil. This research was
conducted to obtain CBR values on peat soils in Ogan Komering Ilir
Regency, using peat soil samples from Tulung Selapan Ilir Village,
Tulung Selapan District and Sumber Hidup Village, East Pedamaran
District.

2 METHODOLOGY
This study uses a laboratory experimental method, by conducting
tests to obtain data and process it to obtain results in the form of
parameter values of the objects being tested. The locations for taking
the specimens in this study were in Tulung Selapan Ilir Village, Tulung
Selapan District and in Sumber Hudup Village, East Pedamaran
District with undisturbed samples. This research activity was carried

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