TY - GEN AU - Pendergast, W L AU - Tuma, Edward C AU - Clevenger, R A C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1956-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.RPT.4626 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1956 TI - Evaluation of refractory qualities of concretes for jet aircraft warm-up, power check, maintenance aprons, and runways: ER -