Understanding of failure of quasibrittle materials is of paramount importance in many engineering fields. This subject has become a broad and important field of considerable mathematical complexity, with many competing models and unsolved problems. Attention in this volume focuses on concrete, rock, masonry, toughened ceramics, ice and other quasibrittle materials characterized by the development of large zones of cracking or other microstructural damage, and its localization into major fractures. Forming the Proceedings of the Europe-US Workshop held in Prague in September 1994, this book documents recent significant advances in this rapidily developing subject. It includes 20 invited lectures, and 40 contributed papers from the leading researchers principally from Europe and the USA.