DEVELOPMENT OF A LOW-DENSITY CONCRETE IMPACT ATTENUATOR
The feasibility of using low-density concretes such as cellular concrete, vermiculite concrete, perlite concrete, and polystyrene concrete as a shock-absorbing material utilized in a highway impact attenuator system was examined. The energy absorbing characteristics of these concretes under impact loading were determined for both air-dried and water saturated conditions. Deceleration tests were also conducted to establish the cushioning effects afforded by these low-density concretes over normal concrete. Mixing, handling, and placing characteristics were considered and reliable mix design methods are presented. Since it can be anticipated that impact attenuators will be exposed to severe weathering effects, freeze-thaw, i.e. weather durability, testing was also conducted.
Youngstown State UniversityDepartment of Mechanical Engineering
Youngstown, OH United States 44555
- Bakos Jr, J D
- Publication Date: 1974-7
- Pagination: 200 p.
- TRT Terms: Concrete; Crash cushions; Deceleration; Drying; Freeze thaw tests; Low density; Mix design; Percent saturation; Shock absorbers; Testing
- Old TRIS Terms: Air dried
- Subject Areas: Highways; Materials;
- Accession Number: 00265431
- Record Type: Publication
- Report/Paper Numbers: OHIO-DOT-23-73
- Files: TRIS
- Created Date: Feb 11 1975 12:00AM