A Study on Particle Crushing of Rock-fill Dam Materials

다국어 초록 (Multilingual Abstract)

Earth and rock fill dam is our typical dam because of their inherent flexibility and adaptability to various foundation
conditions. In order to secure structural safety, rock-fill materials are used angular particles obtained by blasting parent
rock or rounded particles collected from river beds. Concrete-faces rock-fill dams (CFRD) and Concrete-faces gravel-fill
dams (CFGD) have become popular in the last 20 years as a result of their good performance and low cost compared
with the rock-fill dam. These Dams are also constructed by rubbles or gravels. A key factor in the design of the dams
is the deformations induced during construction and upon reservoir filling. These can be predicted using the adequately
defined stress-strain and strength properties. However, the stress-strain properties of rockfill are difficult to determine
because the properties are affected by some factors such as particle grading, size and shape of particles, stress conditions,
and particle crushing. In this study, testing of the behavior of the rock-fill materials are essential prerequisites to the
realistic analysis and design of the CFGD.

다국어 초록 (Multilingual Abstract)

Earth and rock fill dam is our typical dam because of their inherent flexibility and adaptability to various foundation
conditions. In order to secure structural safety, rock-fill materials are used angular particles obtained by blasting parent
rock or rounded particles collected from river beds. Concrete-faces rock-fill dams (CFRD) and Concrete-faces gravel-fill
dams (CFGD) have become popular in the last 20 years as a result of their good performance and low cost compared
with the rock-fill dam. These Dams are also constructed by rubbles or gravels. A key factor in the design of the dams
is the deformations induced during construction and upon reservoir filling. These can be predicted using the adequately
defined stress-strain and strength properties. However, the stress-strain properties of rockfill are difficult to determine
because the properties are affected by some factors such as particle grading, size and shape of particles, stress conditions,
and particle crushing. In this study, testing of the behavior of the rock-fill materials are essential prerequisites to the
realistic analysis and design of the CFGD.

참고문헌 (Reference)

1 Bishop, A.W., "The strength of soils as engineering materials" 16 (16): 91-130, 1966

2 Lade, P.V., "Sighificance of particle crushing in granular materials" ASCE 122 (122): 309-316, 1996

3 Indraratna, B., "Shear behaviour of railway ballast based on large-scale triaxial tests" ASCE 124 (124): 439-449, 1998

4 Miura, "Paticle crushing of a decomposed granite soil under shear" 19 (19): 61-76, 1979

5 McDowell, G.R., "On the micromechanics of crushable aggregates" 48 (48): 667-679, 1998

6 Marsal, R.J., "Large scale testing of rockfill materials" ASCE 93 (93): 27-43, 1967

7 Indraratna, B., "Deformation and degradation mechanics of recycled ballast stabilized with geosynthetics" 43 (43): 35-46, 2003

8 Hardin, B.O., "Crushing of soil particales" ASCE 111 (111): 1177-1192, 1985

9 Lee, K.L., "Compressibility and crushing of granular soils in anisotripic triaxial compression" 4 (4): 68-86, 1967