TY - GEN AU - James R Clifton AU - James M Pommersheim AU - Kenneth Snyder C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1995-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.5690 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1995 TI - Long-term performance of engineered concrete barriers: ER -