A GUIDE TO THE SELECTION OF IGNEOUS ROCKS

A METHOD IS PRESENTED OF CLASSIFYING ROCKS USED IN ROAD CONSTRUCTION BASED ON THREE EASY-TO-APPLY CRITERIA (1) ROCK FRACTURE, (2)CRYSTAL FRACTURE, AND (3) ROCK HARDNESS. THESE CRITERIA ARE NUMBERED FROM 1 TO 4. THE CHEMICAL DESCOMPOSITION IS CHARACTERIZED BY 1 AND 2, THE PHYSICAL DECOMPOSITION BY 1 + 3, AND INDEX OF 3 OR 4 INDICATES FRESH ROCK, INDEX 6 PARTIALLY DECOMPOSED ROCK, INDEX 9 INDICATES A STATE OF ADVANCED DECOMPOSITION, AND INDEX 12 RESIDUAL SOIL. /LCPC/RRL/

  • Supplemental Notes:
    • Vol 4, No 1, P 4, 3 TAB, 1 PHOT
  • Corporate Authors:

    Tech Info for Industry /South Africa

    ,    
  • Publication Date: 1966-1

Subject/Index Terms

Filing Info

  • Accession Number: 00234498
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Mar 6 1970 12:00AM