EFFECTS OF TEMPERATURE CHANGE ON PLASTIC CRASH CUSHIONS
This study was conducted to determine the ability of two types of commercially available plastic crash cushion units to maintain their shape and integrity when filled with sand to normal service load and exposed to large temperature variations. The test program consisted of alternately subjecting four crash cushions to temperature changes of 130 degrees F. The results indicated potential problems with material failure in both types of crash cushions. Temperature changes induced volume changes in the plastic and in the sand which resulted in high tensile stresses in the sandfilled containers. The ability of the plastic to withstand these stresses over extended periods of time must be considered in field applications. Cracking or distortion was observed in three of the four specimens.
- Sponsored by Texas State Department of Highways and Public Transportation and conducted in cooperation with FHWA.
University of Texas, AustinCenter for Highway Research, 200 West 21st Street
Austin, TX USA 78712
- Toth, V N
- Lee, C N
- Publication Date: 0
- Features: Figures; Photos;
- Pagination: 33 p.
- TRT Terms: Cracking; Crash cushions; Energy absorbing materials; Plastics; Sand; Temperature; Tension; Volume changes
- Uncontrolled Terms: Tensile stress
- Old TRIS Terms: Energy absorbers
- Subject Areas: Highways; Safety and Human Factors;
- Accession Number: 00138586
- Record Type: Publication
- Report/Paper Numbers: Research Rpt. 514-1F
- Files: TRIS
- Created Date: Sep 4 1976 12:00AM