Triaxial strength of a fault breccia of weak rocks in a strong matrix

KAHRAMAN S., Alber M.

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, cilt.67, sa.3, ss.435-441, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 67 Sayı: 3
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1007/s10064-008-0152-3
  • Dergi Adı: BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.435-441
  • Anahtar Kelimeler: fault breccia, triaxial strength, volumetric block proportion, texture coefficient, GEOMECHANICAL PROPERTIES, MECHANICAL-PROPERTIES, COMPRESSIVE STRENGTH, SANDSTONES, TEXTURE
  • Hacettepe Üniversitesi Adresli: Hayır

Özet

Triaxial strengths are difficult to obtain when the rock is very heterogeneous with respect to particle size and particle lithology and the samples are difficult to obtain and prepare. A fault breccia with clasts weaker than the matrix was investigated. It was found that its strength was related to the proportion of the blocks and the size of the specimen. The volumetric block proportion and texture coefficient were evaluated by core scanning and image processing. Triaxial compressive strength tests were conducted on different sized cores and different proportions of blocks. The most accurate estimations of the lower bound strength were obtained using larger diameter cores and samples with a higher volumetric block proportion.