Abstract
The resilient modulus Mr of hydraulic mechanically stabilized slag base-course material was evaluated by carrying out a repeated loading triaxial compression test with improved measurement techniques of axial strain and applied load. The repeated loading was imposed following the method suggested by AASHTO and also the one used by Nishi et al. for comparison. From the results, Mr depended on both applied mean principal stress and applied deviator stress and increased with curing time. Use of axial strain measured by LVDT outside the triaxial cell underestimated Mr and the hydraulic nature. Two loading methods gave little difference in the estimated Mr for the stress level applied in this study.
