SOME CONTRASTS BETWEEN PEDOGENIC AND TRADITIONAL MATERIALS

This introductory paper comments on the definition and classification of pedogenic materials, briefly discusses engineering properties and performance, and makes observations on problems associated with such materials. Pedogenic materials have been defined as chemical precipitates (calcium carbonate-calcrete; iron oxide- ferricrete; etc.) that are deposited in a particular layer of the soil profile or in the predological B-horizon by the mechanism of illuviation. The most useful classification system is one combining a genetic term with the traditional soil textural terms. Differences in the engineering properties (composition, hydration, Atterberg limits, stabilization, etc.) of pedogenic and tranditional roadbuilding materials are tabulated.

• Supplemental Notes:
  • This document was reprinted from: Proceedings of the Sixth Regional Conference for Africa on Soil Mechanics and Foundation Engineering, Durban, South Africa, September 1975, Volume 1.
• Corporate Authors:

  National Institute for Road Research, South Africa

  P.O. Box 395
  Pretoria, Transvaal,   South Africa 
• Authors:
  • Netterberg, F
• Publication Date: 1975

Media Info

• Features: Tables;
• Pagination: 2 p.

Subject/Index Terms

• TRT Terms: Definitions; Laterites; Lateritic soils; Properties of materials; Soil types; Soils; Specifications
• Old TRIS Terms: Soil classification systems
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00147728
• Record Type: Publication
• Report/Paper Numbers: RR 202
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM