SYMPOSIUM ON ENGINEERING GEOLOGY-THE ENGINEERING PETROLOGIST

THE ENGINEERING PETROLOGIST, A SPECIALIZED GEOLOGIST, MUST BE ABLE TO ASSESS THE AVAILABILITY AND SUITABILITY OF ROCKS FOR ENGINEERING PURPOSES AND TO DETERMINE THEIR RESERVES. THIS REQUIRES KNOWLEDGE OF THE GENERAL GEOLOGICAL STRUCTURE OF AN AREA, OF ITS TOPOGRAPHY AND CLIMATE, AND OF A VARIETY OF METHODS TO TEST ROCK DURABILITY. THE PETROLOGIST CAN BE ESPECIALLY VALUABLE IN SELECTION OF ROAD BUILDING MATERIALS, SINCE 90% OF THE BODY OF A ROAD CONSISTS OF NATURAL ROCK AND SOIL. WEATHERING IS THE MOST IMPORTANT SOIL-FORMING FACTOR IN SOUTH AFRICA, AND THE PETROLOGIST MUST KNOW WHETHER GIVEN IGNEOUS, SEDIMENTARY, AND METAMORPHIC ROCKS WILL DECOMPOSE OR DISINTEGRATE; ALSO, WHETHER THE PROPERTIES OF A MATERIAL WILL ALTER SIGNIFICANTLY OVER ITS INTENDED LIFE. A DISCUSSION OF THE TERMS ROCK AND SOIL FOR SOUTH AFRICAN ROAD BUILDING PURPOSES LEADS TO CLASSIFICATION OF 10 ROCK GROUPS ACCORDING TO THEIR CHARACTERISTICS, WEATHERING PROPERTIES, AND SUITABILITY FOR SURFACING, BASE, SUBBASE, SUBGRADE FILL, AND WEATHERING COURSE. IN ASSESSING ROCK, THE ENGINEERING PETROLOGIST MUST DISTINGUISH BETWEEN RELEVANT AND IRRELEVANT INFORMATION AND DETAIL TO TRANSMIT TO THE CIVIL ENGINEER.

  • Supplemental Notes:
    • Vol 11, No 8, PP 204-212, 10 FIG, 1 TAB, 21 REF
  • Authors:
    • Weinert, H H
  • Publication Date: 0

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  • Accession Number: 00229895
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 2 1970 12:00AM