Engineering Classification of In-Situ Rock

Abstract

An engineering classification for in-situ rock is proposed which is based upon the results of field exploration and laboratory testing. The field program included a study of more than fifteen construction projects from which data were obtained from geophysical testing, borehole photography, water pressure testing, and geologic mapping. Laboratory analyses of 530 samples taken from these projects included physical and mineralogical descriptions, unit weights, absorption, strength, modulus of elasticity, and sonic velocities (saturated and dry). The rock types investigated included granite and basalt, gneiss, schist, sandstone, limestone, and siltstone. Geologic discontinuities such as joints, faults, and weathered rock are of major importance in an engineering evaluation of in-situ rock because of their effect upon the deformability, shear strength, and permeability of the mass.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1969
Accession Number
AD0848798

Entities

People

  • Andrew H. Merritt
  • Don U. Deere
  • Richard F. Coon

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Cameras
  • Civil Engineering
  • Construction
  • Elastic Properties
  • Geometry
  • Groundwater
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Photographs
  • Photography
  • Test And Evaluation
  • Three Dimensional

Fields of Study

  • Geology

Readers

  • Geotechnical Engineering.
  • Pavement Materials Engineering.