LABORATORY STUDIES ON SHEAR BEHAVIOUR AND STRENGTH PREDICTION OF GROUT JOINTED SANDSTONE . PROCEEDINGS OF THE FIRST INTERNATIONAL WORKSHOP ON SCALE EFFECTS IN ROCK MASSES, LOEN, NORWAY, JUNE 7-8 1990

In most of the river valley projects in India, one of the important features is rock grouting. Several studies have been reported on strength behaviour and prediction in the case of intact and jointed rocks but not on grouted rocks. The present study deals with the prediction of strength response of grout jointed sandstones. Vindhgan sandstone was used to prepare samples for laboratory testing. Planar joints at an angle win major principle stress direction, Beta, of 0, 30, 60 and 90 degrees were created and a cement-sand grout with water cement ratio of 0.7 and of 3 mm thickness was used as filter. Unconfined compression strength and triaxial tests were carried out on both intact and grout jointed rock specimens (after 21 days of curing). The results showed that Hoek-Brown and Rao et al strength criteria proposed for anisotropic rocks can be extended for prediction of strength behaviour of grout jointed rocks. (Author/TRRL)

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  • Corporate Authors:

    AA Balkema

    P.O. Box 1675
    Rotterdam,   Netherlands  BR-3000
  • Authors:
    • Srivastava, R K
    • Jalota, A V
    • Amir, AAA
    • Rao, K S
  • Publication Date: 1990

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00609533
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 90-6191-660-7
  • Files: ITRD, TRIS
  • Created Date: Jun 30 1991 12:00AM