About the Authors

Born and educated in Prague, Dr. Zdcnck P. Bazant became in 1973 professor at Northwestern University, was named in 1990 to the distinguished W. P. Murphy Chair, and served during 1981-87 as Director (founding) of the Center for Concrete and Gcomaterials. I le has authored over 370 refereed journal articles and published books on Stability of Structures (1991), Concrete at High Temperatures (1996) and Creep of Concrete (1966). He served as Editor (in Chief) of ASCE Journal of Engineering Mechanics (1988-94), and is Regional Editor of the Internatiot^il Journal of Fracture and member of many other editorial boards. He was founding president of I A-EraMCoS, president of the Society of Engineering Science, and chairman of ІА-SMiRT Division H. He has chaired many technical committees in ASCE, R1LEM and AC1. He is a Registered Structural Engineer in Illinois. He has been staff consultant to Argonne National Laboratory and consulted for many firms and institutes. His awards include the Prager Medal from SES; Newmark Medal, Huber Priz. e and T. Y. Lin Award from ASCE; R1LEM Medal; Humboldt Award; an honorary doctorate from CVUT, Prague; Guggenheim, Kajima, JSPS, NATO and Ford Foundation Fellowships; Meritorious Paper Award from the Structural Engineering Association; Best Engineering Book of the Year Award from AAP; Medal of Merit from the Czech Society of Mcchanichs; Gold Medal from the Building Research Institute of Spain; Honorary Memberships in the last two and in the Cz. ech Society of Civil Engineers, and others. He is a Fellow of the American Academy of Mechanics, ASME, ASCE, R1LEM and AC1. In 1996 he was elected to the National Academy of Engineering.

Dr. Jaime Planas received his degree in civil engineering in 1974 from the Universidad de Santander, Spain. He received his Ph. D. degree from the Universidad Politecnica de Madrid, Spain, in 1997. His doctoral thesis was awarded the F. ntrecanales Prize to the best thesis in soil mechanics and the Extraordinary Prize of the Polytechnical University of Madrid. He joined the Department of Materials Science of the Universidad Politecnica de Madrid, first as a lecturer (1975-77), later as assistant professor (1978-1988) and in 1989 he became professor. He teaches, or has taught, general physics, materials science, continuum mechanics, fracture mechanics and constitutive equations to students of civil engineering and of materials engineering. He conducted research on low temperature (-170 °С) mechanical properties of engineering materials and on fracture mechanics applied to materials for civil engineering. Since 1983 his main interest focused on fracture of concrete and quasibrittle materials. In this field, he actively participated in various R1LEM and ESIS Technical Committees and published over 50 research papers and several reviews.

About the Authors

The authors in Segovia, Spain, in 1992. In the background, the aqueduct of Segovia, build by the Romans two thousand years ago.

Мети zesnulemu dedeckovi Zdenkovi, otci Zdenkovi a matce Stepance, kteri pestovali moji touhu о poznanf, a zene Ive, ktera ji podporovala.1 Zdenek P. Bazant

Л mon pare і та mare, a les meves germanes, і a la meva dona, amb el men amor і les meves grades, ага і sempre?

Jaime Planas

JTo my late grandfather Zden&k, father Zdenek* and mother Stepanka who nurtured my desire for knowledge, and wife Iva who supported it.

2To my father and mother, to my sisters, and to my wife, with my love and my thanks, now and ever.

About the Authors

Dr. Zdenek Bazant, one of the persons to whom this book is dedicated, was bom on November 25. 1879, in Prostejov and died on September 1. 1954, in Nove Mesto na Morave (both now in the Czech Republic). He was professor of structural mechanics and strength of materials at the Czech Technical University in Prague (CVUT) and a member of the Czechoslovak Academy of Sciences. He was twice elected the rector (president) of CVUT. He authored several books and many research articles in Czech, Tnglish, Trench, and German.