This report presents the results of a study conducted to evaluate the use of slipform paving equipment for the construction of airfield pavements. Nine construction projects were observed and smoothness measurements made on eight of these projects. Currently used equipment and construction practices are presented and analyzed; problem areas and corrective measures are discussed. Results from the smoothness measurements are presented and considered in terms of current construction requirements and the effect of the surface smoothness on the functional performance of the performance of the pavement. Although the elimination of fixed side forms is the most appealing feature of the slipform method, it also causes the most complications. The sophisticated equipment and grade and alignment control systems require highly trained personnel. Large quantities of low-slump concrete are needed to ensure uniform forward movement of the paver. It is also imperative that the concrete have a uniform consistency. The construction of keyways and the installation of dowels in longitudinal construction joints requre special techniques. The free-standing or slipformed edges will slump to a certain extent. The magnitude of edge slump is directly proportional to slab thickness. Edge slump results in deviations of the surface from a straightedge which are greater along paving lane edges than in the interior of the paving lanes. If uncontrolled, excessive edge slump can cause problems during the construction of fill-in lanes and can result in depressions along longitudinal construction joints. Within the interior of paving lanes, the smoothness of the surface is comparable in the longitudinal and transverse directions and appears to be independent of slab thickness. Slipform pavers can be used to construct airfield pavements that are structurally and functionally adequate for aircraft operation. However, it will require a concentrated effort on the part of the engineer and the contractor to ensure that the design and specifications, a pavement with the desired characteristics. field adjustments, and quality control procedures result in

  • Corporate Authors:

    U.S. Army Waterways Experiment Station

    Soils and Pavement Laboratory
    Vicksburg, MS  United States  39180
  • Authors:
    • Parker Jr, F
  • Publication Date: 1975-6

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 35 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00134744
  • Record Type: Publication
  • Report/Paper Numbers: S-75-18 Final Rpt.
  • Files: TRIS
  • Created Date: Jun 23 1976 12:00AM