INVESTIGATION OF BEACH SAND TRAFFICABILITY ENHANCEMENT USING SAND-GRID CONFINEMENT AND MEMBRANE REINFORCEMENT CONCEPTS; REPORT 2, SAND TEST SECTIONS 3 AND 4

Containerization of Army cargo for use in overseas theatres of operation is progressing. The discharging of containers from containerships and moving them across beaches in logistic over-the-shore operations is a problem that the Army must be capable of handling. This report is the second of a series investigating new concepts for beach sand trafficability enhancement for container hauling trucks. The objectives of this phase were to further investigate the beach sand trafficability enhancement potential of various sand-grid concepts and to test new membrane reinforcement and asphalt stabilization concepts. Two test sections containing a total of 10 test items were constructed and subjected to test traffic. The tests included eight sand-grid items and two sand-asphalt items. One sand-grid item and one sand-asphalt item contained membrane reinforcement. The sand-grid items included rectangular, hexagonal, and square aluminum grids. One test section was trafficked using channelized traffic and the other using a distributed traffic pattern similar to actual truck traffic on a highway. Tests results showed that both the hexagonal and square aluminum grids could be used in conjunction with unstable beach sands to produce sand-grid base layers capable of handling the heavy truck traffic associated with hauling containers during over-the-shore operations. The performance of rectangular aluminum grids was poor. Some important items relating to the performance of sand-grid base layers were found to be the grid material, surfacing, cell area, sand quality, thickness of sand-grid layer, type of traffic, cell shape, compaction effort, rebound deflection, and permanent surface depression during traffic. Test results also showed that membrane reinforcement was not effective under thin sand-grid or sand-asphalt base layers. Test results also demonstrated that successful sand-asphalt base layers could be constructed in the field using beach sands, SS-1 emulsified asphalt, a small amount of portland cement, and an expedient blade mix concept. (Author)

  • Corporate Authors:

    U.S. Army Waterways Experiment Station

    3909 Halls Ferry Road
    Vicksburg, MS  USA  39180-6199

    Army Corps of Engineers

    Office of the Chief of Engineers, 1000 Independence Ave, SW
    Washington, DC  USA  20314-1000
  • Authors:
    • Webster, S L
  • Publication Date: 1981-2

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 99 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00335547
  • Record Type: Publication
  • Report/Paper Numbers: Tech Rept. GL-79-20
  • Files: TRIS, ATRI
  • Created Date: Oct 28 1981 12:00AM