Publications / 2020 Proceedings of the 37th ISARC, Kitakyushu, Japan

Method for Estimating Subgrade Reaction Modulus by Measuring Wheel-terrain Interactions

Yasushi Wada and Taizo Kobayashi
Pages 646-649 (2020 Proceedings of the 37th ISARC, Kitakyushu, Japan, ISBN 978-952-94-3634-7, ISSN 2413-5844)

For several years, the compaction quality of embankments has been controlled by the dry bulk density and water content. However, the quality assessment is time consuming and merely a point measurement. We are developing a method that measures the mechanical properties of soil by observing the soil - wheel interaction behavior. In this study, we have proposed a method for estimating the subgrade reaction modulus of the soil by towing a wheel on the ground surface. This paper describes the theoretical basic concept of this method and discusses its validity with the results obtained from a laboratory model experiment.

Keywords: Soil compaction; Quality control; Subgrade reaction modulus