PERU EXPERIMENTAL ROAD PROJECT

A SIX-YEAR PERFORMANCE EVALUATION IS PRESENTED OF THE STRUCTURAL CONDITION OF AN EXPERIMENTAL ROAD PROJECT AT PERU, MAINE. THIS ROAD CONTAINS THREE DESIGNS UTILIZING A SOIL CEMENT BASE, ASPHALT STABILIZED BASE, AND CRUSHED GRAVEL BASE. VISUAL OBSERVATIONS INDICATED THAT THE SOIL CEMENT IS PERFORMING THE POOREST BECAUSE OF NUMEROUS TRANSVERSE CRACKS. THE ASPHALT STABILIZED BASE IS PERFORMING SATISFACTORILY AND THE GRAVEL BASE IS PERFORMING EXCEPTIONALLY WELL. THESE CONCLUSIONS WERE VERIFIED WHEN PRESENT SERVICEABILITY INDICIES (PSI) WERE MEASURED USING A CHLOE PROFILOMETER. DEFLECTIONS MEASURED WITH A BENKELMAN BEAM INDICATE THE ASPHALT STABILIZED BASE HAS THE GREATEST DEFLECTION, FOLLOWED BY THE GRAVEL BASE AND THE SOIL CEMENT RESPECTIVELY. THE SOIL CEMENT IS PERFORMING SIMILARLY TO A CONCRETE SLAB. TEST HOLES DUG THROUGH EACH TYPE OF BASE FAILED TO PROVIDE VALID INFORMATION PERTAINING INDICATED THAT THE MIXTURE PROPERTIES WERE NOT AFFECTED BY THE DIFFERENT BASES UPON WHICH THEY WERE PLACED. THE PERFORMANCE OF THE VARIOUS BASE SECTIONS ON THIS PARTICULAR ROADWAY INDICATES THAT THE ADDITIONAL COST OF USING EITHER A SOIL CEMENT OR AN ASPHALT BASE DOES NOT APPEAR TO BE JUSTIFIED FOR THE CONDITIONS ENCOUNTERED. /AUTHOR/

• Corporate Authors:

  Maine State Highway Commission

  Materials and Research Division, Bureau of Highways
  Augusta, ME  United States  04330

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Mcnaughton, E
  • Rand, D
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Base course (Pavements); Benkelman beam; Bituminous aggregates; Bituminous materials; Deflection tests; Experimental roads; Gravel; Pavement design; Pavement performance; Profilometers; Serviceability; Soil cement; Surface treating
• Uncontrolled Terms: Crushed gravel; Serviceability Index
• Old TRIS Terms: Bituminous surfacing
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00206420
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Files: TRIS, USDOT
• Created Date: Oct 19 1970 12:00AM