Decomposed granite soils, which are called masa-do in Japanese, are widely distributed in the south-western part of Japan. One of their characteristics is an easy crushing of the soil grains, which is an important factor in view of the study of their engineering properties. In this paper, first, the alteration of the grains of decomposed granite is considered on the results of a simple extension test of weathered rock specimens. And weathering properties of the soil grains are observed by using an electron microscope. On the basis of the above methods, the difference between the weathering patterns of quartz and feldspar are explained. Second, the crushability of soil grains which depends on the weathering patterns is examined experimentally and a concept of selective fracture of soil grains is presented. (a). The number of the covering abstract of the conference is IRRD abstract no. 213776. /TRRL/

  • Supplemental Notes:
    • Presented at the First Australian Conference on Engineering Materials.
  • Corporate Authors:

    University of New South Wales

    School of Civil Engineering, Anzac Parade
    Kensington, New South Wales  Australia  2033
  • Authors:
    • Matsuo, S I
    • Sawa, K
  • Publication Date: 0

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 15 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00129575
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Apr 7 1976 12:00AM