INVESTIGATION OF STRUCTURAL GRADE EXPANED SUCARNOOCHEE (PORTER'S CREEK) CLAY AS HIGHWAY CONSTRUCTION AGGREGATE

AN INVESTIGATION WAS MADE OF THE PROPERTIES OF SOIL AGGREGATES BASE AND ASPHALT CONCRETE BASE USING EXPANED CLAY AS THE COARSE AND FINE AGGREGATE. THE EXPANDED CLAY WAS MANUFACTURED IN A ROTARY KILN AT TEMPERATURES OF 1700 F, 1850 F, AND 1990 F. ABRASION AND SOUNDNESS TESTS, ALONG WITH COMPRESSIVE STRENGTH DETERMINATIONS, WERE PERFORMED ON AGGREGATES FIRED AT THESE TEMPERATURES. SOIL AGGREGATES BASE MIXES USING A TYPICAL LOCAL NATURAL BINDER WERE INVESTIGATED FOR CBR PROPERTIES. ASPHALT CONCRETE BASE MIXES WERE INVESTIGATED FOR MARSHALL STABILITY AND FLOW PROPERTIES, AMONG OTHERS. THE RESULTS OF THESE INVESTIGATIONS SHOWED THAT THE EXPANDED CLAY FIRED AT 1850 F HAD THE BEST STRUCTURAL PROPERTIES, AND THAT GOOD TO EXCELLENT CBR'S COULD BE OBTAINED FROM THE SOIL AGGREGATES BASE MIXES. MARSHALL STABILITY VALUES FOR THE ASPHALT CONCRETE MIXES WERE GENERALLY TWO TIMES THE VALUE FOR SIMILAR NATURAL HARD ROCK MIXES. THE OTHER MARSHALL PROPERTIES OF FLOW, AIR VOIDS, AND VMA WERE GENERALLY WITHIN SPECIFICATION LIMITS. ASPHALT CONTENTS ON A VOLUME BASIS WERE NEAR THE SAME OR SLIGHTLY HIGHER THAN THOSE OF SIMILAR NATURAL HARDROCK MIXES. /AUTHOR/

• Supplemental Notes:
  • Hpr No 37, 77 PP, 41 FIG, REFS, 2 APP
• Corporate Authors:

  University of Alabama, Tuscaloosa

  Department of Civil Engineering, P.O. Box 870205
  Tuscaloosa, AL  United States  35487-0205
• Authors:
  • Karrh, J B
  • Stephenson, H K
• Publication Date: 1968-3

Subject/Index Terms

• TRT Terms: Abrasion tests; Air voids; Asphalt concrete; Asphalt content; Base course (Pavements); Building materials; California bearing ratio; Cement kilns; Compression tests; Compressive strength; Expansive clays; Marshall test; Ovens; Road construction; Soil aggregates; Soundness test
• Old TRIS Terms: Air voids content; Compressive strength tests; Marshall stability marshall stability & flow test flow
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00217842
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 28 1970 12:00AM