In the past few decades, the rockfill embankment dam, which has superior workability and
economy, has become a major trend. In Korea, most of the embankment dams are rockfill dams, but recently,
in response to the demand for sustainable development and environmentally-friendly water resource
development, the sand and gravel in streams has become a major construction material for dams, rather than
the non-economic rockfill, and its application examples have also increased.
In this study, a large triaxial test was performed, with construction samples of different maximum sizes, in parallel
with the grading method at the 'B Dam' construction site in Korea, and the effects of the different maximum sizes
on the strain of the dam construction material and on the shear strength characteristics were analyzed to provide the
basic data for determining the strength characteristics of the coarse-grained materials by the maximum size.
