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/
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Corporate Authors:
Transp & Soil Mech Lab, Pwm /Spain
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Authors:
- Ubach, A
- Publication Date: 1970-7
Media Info
- Features: Figures; Photos; Tables;
- Pagination: p. 15-49
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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