TY - RPRT TI - Mechanical properties of high performance concrete after exposure to elevated temperatures AU - Lawson, J Randall AU - Phan, Long T AU - Davis, Frank PY - 2000 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 6475 DO - 10.6028/NIST.IR.6475 ER -