An extensive literature review was conducted to obtain information regarding pumping, with emphasis on designs to prevent pumping, the performance of different subbase materials, and tests used to simulate pumping. Three testing procedures were selected to be used to investigate and characterize the erosion of rigid pavement subbase and shoulder materials, viz., a brush test, a jetting test, and a rotational shear technique. The latter was designed and built especially for testing of subbase materials, and is an improvement on earlier models used by other researchers. Portland cement stabilized asphalt stabilizerd, lean concrete, and unstabilized materials were tested in an statistically desgined program.f The rotational shear device gave the most useful results for stabilized materials. However, this device can not be used to test cohesionless materials. An effort was made to correlate the laboratory erosion results with the performance of the materials in the pavement. Guidelines are provided on the required material properties to minimize pumping due to surface erosion of subbase and shoulder materials. The feasibility of design and rehabilitation alternatives requires an economic analysis of the alternatives. A computer program (PEARDARP) was developed to evaluate the effect of rehabilitation and design alternatives on rigid pavement pumping and performance. The effects of different rehabilitation techniques on pavement distresses were quantified for inclusion in the program. An existing pumping prediction model was modified to include factors such as, drainage, climate, and suubbase type. (Author)

  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  United States  47907-1284

    Indiana Department of Highways

    Indianapolis, IN  United States 

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • van Wijk, A J
  • Publication Date: 1985-5-16

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 506 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00451702
  • Record Type: Publication
  • Report/Paper Numbers: JHRP-85-10
  • Created Date: Aug 27 2004 9:13PM