Full-Scale Vehicle Crash Tests on the Iowa Box-Aluminum Bridge Rail by Ronald K. Faller, December 1988

(1988) Full-Scale Vehicle Crash Tests on the Iowa Box-Aluminum Bridge Rail by Ronald K. Faller, December 1988. Transportation, Department of

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Abstract

One full-scale vehicle crash test was conducted on the Iowa Temporary Concrete Barrier Rail Half-Section. Test I3-1 was conducted with a 5,386 lb. vehicle at 20 deg . and 60 mph. The installation consisted of ten (10) longitudinally placed Temporary Concrete Barrier Rail Half-Sections, which rested directly on the airport's concrete apron surface. Each section was 10 ft. long. The front face of the . barrier resembled the New Jersey Face Shape. The barriers were connected with a 1-in., Lshaped , A-36 steel rod which fit into two sets of cable or wire rope loops embedded into both ends of the concrete barriers. The 1/ 2-in. wire rope or cable had a minimum breaking strength of 20,000 lbs. One No. 8 rebar was used for reinforcement and was placed 3-in. from the back face and 5-in. above the concrete pavement surface. The point of impact was at the midpoint of the 100 ft installation between barriers No. 5 and No. 6. The test was evaluated according to the safety criteria NCHRP 230 and also in the AASHTO guide specifications. safety performance of the Iowa Temporary Concrete Barrier Half-Section was determined to be unsatisfactory.