SCALE MODEL STUDY OF LOW-DENSITY CONCRETE IMPACT ATTENUATORS

The series of events taking place during an automobile-impact attenuator collision are extremely complex. The response of the attenuator upon impact is dependent on a large number of variables including vehicle impact velocity, weight and angle of incidence. Current research depends heavily on full-scale experiments to determine the crashworthiness of an attenuator design. This approach can become both costly and time consuming, making scale modeling an attractive alternative. The primary objective of this study was to establish the feasibility of modeling various types of low-density concrete and to show by example that the complex structural response of an automobile-impact attenuator collision can be studied and predicted with scale models. The secondary objective dealt with the protection of the low-density concrete attenuators from environmental effects, namely, freeze-thaw effects, and with economical installation techniques. Based upon the scale model testing and expanded freeze-thaw evaluation of numerous protective coatings, a prototype design of a low-density concrete attenuator was presented. /FHWA/

  • Corporate Authors:

    Youngstown State University

    Department of Mechanical Engineering
    Youngstown, OH  USA  44555
  • Authors:
    • Bakos Jr, J D
  • Publication Date: 1978-5

Media Info

  • Pagination: 180 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00179868
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-78-S0747 Final Rpt., FCP 41F-224
  • Contract Numbers: State Job 14296(0)
  • Files: TRIS, USDOT
  • Created Date: Oct 12 1978 12:00AM