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Performance Evaluation of New Jersey’s Portable Concrete Barrier with a Box-Beam Stiffened Configuration and Grouted Toes – Test No. NJPCB-5

REPORT NUMBER

TRP-03-372-18

AUTHORS

Surajkumar Bhakta, Karla Lechtenberg, Chen Fang, Ronald Faller, John Reid, Bob Bielenberg, Erin Urbank

PUBLICATION DATE

2018-12-13

ABSTRACT

This report documents a full-scale crash test conducted in support of a study to investigate the performance of New Jersey Department of Transportation’s (NJDOT’s) Precast Concrete Curb, Construction Barrier, which will be referred as portable concrete barrier (PCB) in various configurations. This represents the fifth system as part of this study. The primary objective of this research effort was to evaluate the safety performance of the NJDOT PCB, Type 4 (Alternative B) with a box-beam stiffened configuration and grouted toes, corresponding connection type B in the 2015 NJDOT Roadway Design Manual. The system utilized 6-in. × 6-in. × 3/16-in. (152-mm × 152-mm × 5-mm) box beam sections placed across all nine joints. Barrier nos. 1 and 10 were anchored to the concrete tarmac through the pin anchor recesses with nine 1-in. (25-mm) diameter by 15-in. (381-mm) long ASTM A36 steel pins inserted into 1¼-in. (32-mm) diameter drilled holes in the concrete tarmac. Non-shrink grout wedges were placed at the toe of each barrier segment in every joint between adjacent barrier segments. The barrier was evaluated according to the Test Level 3 (TL-3) criteria set forth in the Manual for Assessing Safety Hardware, Second Edition (MASH 2016). The research study included one full-scale vehicle crash test with a 2270P pickup truck. Following the successful redirection of the pickup truck, the safety performance of the system was determined to be acceptable according to the test designation no. 3-11 evaluation criteria specified in MASH 2016. The 1100C small car crash test was deemed unnecessary due to previous testing. The barrier successfully met MASH 2016 TL-3 criteria. This report is the fifth of nine documents in the nine-test series.

KEYWORDS

Highway Safety, Roadside Appurtenances, Crash Test, Compliance Test, MASH 2016, Longitudinal Barrier, Portable Concrete Barrier, PCB, Grout Wedges, Pinned, Barrier Curb, and Box-Beam Stiffeners

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