QUANTITATIVE PETROGRAPHIC EVALUATION OF FINE AGGREGATE

Petrographic examination of coarse aggregate is accepted as a viable method for predicting its durability in concrete; however, no similar quantitative method existed for fine aggregate. This paper proposes a quantitative petrographic analysis that can be used to quickly assess the natural fine aggregate's durability when used in concrete. The method of analysis is essentially the Ministry of Transportation, Ontario LS-616, which separates the fine aggregate into silicate, carbonate, shale, and chert fractions. The weighted percentages of these fractions were statistically compared to standard physical tests, including water adsorption and absorption, dry density, magnesium sulfate loss, and micro-Deval abrasion loss. Step-wise multiple regression equations were developed, which allowed calculation of expected magnesium sulfate and micro-Deval abrasion losses based on the proportion of the petrographic types. Mathematical and statistical techniques were also used to establish a petrographic number for sand that allows the classification of aggregate into good or poor categories based on their petrographic composition.

• 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:
  • Hudec, P P
  • Boateng, S
• Conference:
  • Polymer-Modified Concrete and Mortars: Building on the Past and Moving into the Future
  • Location: Denver, Colorado
  • Date: 1995-6-20 to 1995-6-20
• Publication Date: 1995-12

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 107-112
• Serial:
  • Cement, Concrete and Aggregates
  • Volume: 17
  • 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: Abrasions; Concrete; Durability; Fine aggregates; Forecasting; Geological surveying; Multiple regression analysis; Multivariate analysis; Petrography; Quantitative analysis
• Old TRIS Terms: Multiple regression; Petrographic investigations
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Materials; I32: Concrete; I36: Aggregates;

Filing Info

• Accession Number: 00715427
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 30 1996 12:00AM