A SCANNING DEVICE TO QUANTIFY JOINT SURFACE ROUGHNESS

The shear strength characteristics of rock joints are highly dependent on the roughness of the joint surfaces. However, roughness is a relative term and current methods of describing roughness in quantitative terms are generally not suited to detailed analytical scrutiny. In connection with an investigation into the development of side shear resistance in rough rock socketed piles, a scanning device, which was automatic and free from operator subjectivity, was developed to provide detailed measurements of surface roughness of joint samples obtained in situ. The data collected were suitable for statistical analysis so that surface roughness could be uniquely quantified. The design and operation of the device is described, and an example of scanning is presented. (Author)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01496115
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Lam, TSK
  • JOHNSTON, I W
• Publication Date: 1985-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 117-124
• Serial:
  • Geotechnical Testing Journal
  • Volume: 8
  • Issue Number: 3
  • Publisher: ASTM International
  • ISSN: 0149-6115
  • EISSN: 1945-7545
  • Serial URL: https://www.astm.org/products-services/standards-and-publications/geotechnical-testing-journal.html

Subject/Index Terms

• TRT Terms: Measuring instruments; Rock jointing; Roughness; Scanners; Shear strength; Texture
• Old TRIS Terms: Rock joints; Scanning
• Subject Areas: Geotechnology; Highways; I41: General Soil Surveys;

Filing Info

• Accession Number: 00450607
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 27 2004 9:56PM