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Homogenization Analysis for Calculating Elastic Modulus of Composite Geo-materials  

Seo Yong-Seok (Dept. of Earth & Environmental Sci. & Institute for Basic Science Research, Chungbuk National University)
Yim Sung-Bin (Dept. of Earth & Environmental Sci. & Institute for Basic Science Research, Chungbuk National University)
Baek Yong (Korea Institute of Construction Technology, Dept. Geotechnical Engineering Research)
Kim Ji-Soo (Dept. of Earth & Environmental Sci. & Institute for Basic Science Research, Chungbuk National University)
Publication Information
The Journal of Engineering Geology / v.16, no.3, 2006 , pp. 227-233 More about this Journal
Abstract
Bedrock is inhomogeneous for its genetically diverse origins and geological conditions when it forms, and especially, conglomerates and core-stones are one of these typical composite geo-materials composed of weak matrixes and strong pebbles. Mechanical properties of these composite bedrocks, like a conglomerate, generally vary depending on the mechanical properties and distributions of pebbles and the matrix. Therefore, regarding the consequence of understanding mechanical property of bedrocks in the designing slopes, tunnels, and other engineering facilities, empirical rock classification methods generally applied in the mechanical property modeling may not be suitable and rather, we may need some other classification methods, or tests more specific for these inhomogeneous composite bedrocks. This study includes a series of analyses to see elastic behaviors and modulus of composite geo-materials using homogenization theory. Forty nine case models were made for the elastic analysis with considering 5 factors such as gravel content, gravel size, strength of matrix, sorting and dip angle. The results analyzed are applicable to calculate elastic modulus of composite geo-materials as conglomerates and core-stones.
Keywords
homogenization theory; composite geo-materials; elastic modulus; gravel size; strength of matrix;
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