Prediction of California Bearing Ratio of Soils Using Artificial Neural Network

California Bearing Ratio (CBR) is defined as a ratio expressed in percentage of force per unit area required to penetrate a soil mass with a circular plunger of 50 mm diameter at the rate of 1.25 mm/min to that required for corresponding penetration in a standard material. The ratio is usually determined for penetration of 2.5 and 5 mm. Where the ratio at 5 mm is consistently higher than that at 2.5 mm, the ratio at 5 mm is used. The load value/corrected load value is taken from the load penetration curve and the CBR is calculated as follows (IS: 2720-Part XVI-1987).