Correlation of Soil Plasticity Index (PI) Value with California Bearing Ratio (CBR) for Soil in Banjarmasin


  • Hendra Cahyadi Universitas Islam Kalimantan MAB Banjarmasin
  • Fitria Handayani Universitas Islam Kalimantan MAB Banjarmasin
  • Reyna Andiani


Plasticity Index, CBR, Atterberg Limit, clay


During this time to get the price of California Bearing Ratio (CBR) planners will conduct field tests and / or laboratory tests. This takes time and is relatively large. For this reason, it is needed a practical matter or formulation about the relationship between soil parameters so that planners do not need to test the overall soil parameters. To get this formula, it is necessary to do repeated experiments in the laboratory, which will produce graphical relationships or correlations between soil parameters. From this correlation, if there is a value of soil parameters, the other soil parameters can be known as well.

This study aims to obtain a graph or correlation of Plasticity Index (PI) with California Bearing Ratio (CBR) for the Banjarmasin region. The practical benefit that can be obtained from this research is by knowing the PI price for land in Banjarmasin, then the CBR price can also be obtained.

Tests conducted in this study are the Atterberg Limit test, and the CBR test. The test will beconducted at the Soil Mechanics Laboratory of the Islamic University of Kalimantan MAB Banjarmasin. Soil samples will be taken at 2 (two) locations in the city of Banjarmasin.

The conclusion in this test is that the correlation between CBR and PI is CBR = -0.2421 PI + 7.842