MODEL EVALUATION OF SOIL FACTORS AFFECTING RIGID PAVEMENT PUMPING

A LABORATORY MODEL WAS DEVISED TO SIMULATE PUMPING OF AN 8-IN. NONREINFORCED RIGID PAVEMENT UNDER A 9,000-LB WHEEL LOAD TRAVELING 14 MPH. THE MODEL PUMPING ACTION WAS OBSERVED TO BE A SOIL EROSION PHENOMENON, AND A THEORETICAL APPROACH INDICATED SOIL COHESION AS A KEY FACTOR. TESTS ON SEVERAL FINEGRAINED SOILS AT DIFFERENT TEMPERATURES AND DIFFERENT COMPACTED DENSITIES VERIFIED THAT PUMPING RATE WITHOUT DRAINAGE IS INVERSELY PROPORTIONAL TO SOIL COHESION. INCREASING SOIL DENSITY AND DECREASING SOIL TEMPERATURE BOTH RETARD PUMPING BY INCREASING COHESION, AND STABILIZERS TO INHIBIT PUMPING OF FINE-GRAINED SOILS MAY BE SELECTED ON THE BASIS OF THEIR EFFECT ON COHESION. PRELIMINARY PUMPING DATA ON SOIL-CEMENT ARE PRESENTED. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 12-23
  • Monograph Title: Soil drainage and other soil-water phenomena
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00233673
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Nov 7 1994 12:00AM