STUDY OF THE SUCEPTIBILITY TO POLISHING OF AGGREGATE MIXTURES OF DIFFERENT PETROLOGICAL COMPOSITION

A SERIES OF TESTS IS DESCRIBED, THE AIM OF WHICH IS TO DETERMINE THE DEGREE OF POLISHING OF LIMESTONE AGGREGATE MIXED WITH OTHER AGGREGATES WITH DIFFERENT PETROGRAPHIC PROPERTIES, WITH A VIEW TO ASCERTAINING FROM THEIR BEHAVIOR WHETHER THEIR USE IN WEARING COURSES IS A VIABLE ECONOMIC PROPOSITION. THE LIMESTONE AGGREGATES TESTED WERE MIXED WITH FINE AND COARSE GRANITE, BASALT, PORPHYRY AND QUARTZITE AGGREGATES. RESULTS ARE GIVEN AND THE FOLLOWING CONCLUSIONS REACHED: (1) THE DIFFERENCES IN TEXTURE, DIMENSIONS OF GRAINS AND MINERALOGICAL COMPOSITION OF THE SELECTED AGGREGATES ARE DECISIVE FACTORS IN THE UNEVEN BEHAVIOR OF SOME MIXTURES; (2) THE SUSCEPTIBILITY OF LIMESTONE TO POLISHING DECREASES WHEN IT IS MIXED WITH GRANITE, BASALT PORPHYRY, OR QUARTZITE; AND (3) ANY MIXTURE CONTAINING MORE THAN 60 PERCENT LIMESTONE SHOULD NOT BE USED IN THE CONSTRUCTION OF NON-SKID PAVEMENTS. MIXTURES CONTAINING LESS THAN 50 PERCENT LIMESTONE GIVE SATISFACTORY RESULTS. /IRRD-IRF/

• Corporate Authors:

  Transp & Soil Mech Lab, Pwm /Spain

  ,    
• Authors:
  • Ubach, A
• Publication Date: 1970-7

Media Info

• Features: Figures; Photos; Tables;
• Pagination: p. 15-49
• Serial:
  • Issue Number: 80

Subject/Index Terms

• TRT Terms: Aggregates; Basalt; Economic factors; Granite; Limestone aggregates; Petrography; Polished aggregates; Quartzite; Slipperiness; Wearing course (Pavements)
• Old TRIS Terms: Economic considerations
• Subject Areas: Economics; Geotechnology; Highways;

Filing Info

• Accession Number: 00217738
• Record Type: Publication
• Report/Paper Numbers: Info Bltn
• Files: TRIS
• Created Date: Mar 23 1974 12:00AM