STABILIZATION OF POOR QUALITY AGGREGATE

THE DESIGN, CONSTRUCTION AND EVALUATION OF A 7 1/2 MILE PROJECT FEATURING PORTLAND CEMENT, LIME AND ASPHALT EMULSION STABILIZATION OF A POOR QUALITY AGGREGATE ARE DESCRIBED. BASE THICKNESSES OF 6, 8, AND 10 INCH STABILIZED BY 2, 4 OR 9 PERCENT CEMENT, 1.5, 2.5 OR 5.5 PERCENT ASPHALT EMULSION, OR 3 PERCENT LIME WERE STUDIED. THE EFFECTS OF DELAYED COMPACTION ON THE PERFORMANCE OF SEVERAL LIME TREATED AND CEMENT MODIFIED (2 OR 4 PERCENT CEMENT) AGGREGATE BASES WERE ALSO STUDIED. PERFORMANCE OF THE BASES WAS EVALUATED BY PLATE BEARING AND BENKELMAN BEAM TESTS, ROUGHOMETER TESTS, CRACK SURVEYS, AND MAINTENANCE REQUIRED. IT WAS CONCLUDED THAT: (1) CEMENT-TREATED POOR QUALITY AGGREGATE PRODUCES AN ADEQUATE BASE COURSE, (2) CEMENT MODIFIED BASES CONTAINING MORE THAN 4 PERCENT CEMENT, BUT NOT ENOUGH CEMENT TO PASS THE FREEZE-THAW TESTS, PERFORMED AS WELL AS SOIL-CEMENT BASES AND WERE LESS EXPENSIVE, (3) SOIL-CEMENT MIXTURES SHOULD BE COMPACTED IMMEDIATELY AFTER MIXING, (4) ASPHALT EMULSION PRODUCED NO APPRECIABLE BENEFITS AND (5) LIME, AT THE RATE OF 3 PERCENT, PRODUCED SIGNIFICANT BENEFITS WHEN USED IN A TEN INCH BASE. /BPR/

• Corporate Authors:

  Minnesota Department of Highways

  ,    

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Korfhage, G R
• Publication Date: 1967

Subject/Index Terms

• TRT Terms: Base course (Pavements); Benkelman beam; Calcium oxide; Compaction; Construction; Cracking; Design; Emulsified asphalt; Freeze thaw tests; Mineral aggregates; Mix design; Plate bearing test; Portland cement; Road meters; Soil cement; Soil stabilization; Test sections
• Uncontrolled Terms: Stabilization
• Old TRIS Terms: Bases
• Subject Areas: Construction; Design; Geotechnology; Highways;

Filing Info

• Accession Number: 00217473
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Report/Paper Numbers: Bpr No 178
• Files: TRIS, STATEDOT
• Created Date: Apr 12 1994 12:00AM