THE INFLUENCE OF SIZE AND HARDNESS OF SAND PARTICLES AND THE PROPORTIONS ON THE FRICTION CHARACTERISTICS OF CEMENT MORTARS: A LABORATORY STUDY

The accelerated polishing machine and the British pendulum tester were used in laboratory friction tests on cement mortar specimens, which were prepared with various fractions of limestone and emery sand. Two types of investigations were conducted. One consisted of mixes with constant grading of sand--either limestone or emery--in which a fraction was replaced by an equal amount of the other type of sand. The other investigation consisted of mixes of limestone sand in which a certain amount of emery sand, each one of four different fractions, was added each time. In each series of tests the total surface area of emery sand was constant, regardless of the fraction used. Researchers found that the finer fractions influence to a greater degree the skid resistance value (SRV) of mortars. The second investigation confirmed that the total surface area of hard particles determines the friction characteristics of the mortars. Once the optimum total surface of hard particles exists, further increase will not result in additional increase of the SRV.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3528769
• 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:
  • KOLIAS, S
• Publication Date: 1994-12

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 140-149
• Serial:
  • Cement, Concrete and Aggregates
  • Volume: 16
  • Issue Number: 2
  • Publisher: American Society for Testing and Materials (ASTM)
  • ISSN: 0149-6123
  • Serial URL: http://journalsip.astm.org/JOURNALS/CEMENT/cca_home.html

Subject/Index Terms

• TRT Terms: Cement mortars; Concrete pavements; Friction; Friction tests; Laboratory studies; Polished aggregates; Sand; Skid resistance
• Old TRIS Terms: Frictional properties
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00675519
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 15 1995 12:00AM