Correlation between Bearing Capacity (K30) and Elastic Modulus (Es) using the LFWD Test

초록

An evaluation of the Light Falling Weight Deflectometer (LFWD) device to reliably measure the in-situ elastic modulus of pavement layers and subgrades is presented in this paper. For this purpose, field tests were conducted on selected railway sections from different project in Korea. All sections were tested using the LFWD in companion with other standard tests including the Plate Load Test(PLT) and Cyclic Plate Load Test(CPLT) that were used as reference measurements. Regression analyses were conducted on determine the best correlations between the elastic modulus obtained from LFWD and those obtained from PLT and CPLT test. Good correlations were obtained, which demonstrated that LFWD can be a promising device for in situ characterizing of railway layers and subgrade.