Show simple item record

dc.contributor.authorChoi, J.
dc.contributor.authorShin, J.
dc.contributor.authorJang, Hyong Doo
dc.contributor.authorKang, S.
dc.date.accessioned2017-07-27T05:20:39Z
dc.date.available2017-07-27T05:20:39Z
dc.date.created2017-07-26T11:11:20Z
dc.date.issued2017
dc.identifier.citationChoi, J. and Shin, J. and Jang, H.D. and Kang, S. 2017. Mechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness. Tunnel and Underground Space. 27 (3): pp. 172-184.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/54347
dc.identifier.doi10.7474/TUS.2017.27.3.172
dc.description.abstract

The hardness and mechanical properties of the minerals in the Daejeon granite according to depths were investigated by indentation test, load-unload test, and cycle test of dynamic ultra-micro hardness. As a result of the tests, it was possible to classify into three mineral groups (Group-1, -2, -3). The Martens hardness was not significantly different between 41 m and 223 m depths in three mode tests. Nevertheless, they showed in the order of a cycle test < load-unload test < indentation test. Considering the average Martens hardness, elastic modulus, and indentation work for each mineral group, their boundaries were relatively clear. In conclusion, A relatively accurate hardness of minerals can be obtained by three mode tests of dynamic ultra-micro hardness. In addtion, it was possible to characterize the elastic modulus and the elastic-plastic properties of the minerals from the load-unload and cycle tests.

dc.publisherKorean Society for Rock Mechanics
dc.titleMechanical Properties of Minerals in Daejeon Granite According to Depths by Dynamic Ultra-micro Hardness
dc.typeJournal Article
dcterms.source.volume27
dcterms.source.number3
dcterms.source.startPage172
dcterms.source.endPage184
dcterms.source.issn1225-1275
dcterms.source.titleTunnel and Underground Space
curtin.departmentDept of Mining Eng & Metallurgical Eng
curtin.accessStatusFulltext not available


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record