In recent years, the U.S. Army Corps of Engineers has launched major developments in underwater construction of locks and dams, using the so-called "in-the-wet" or "offsite prefabrication" construction method. This innovative method uses precast concrete modules as the in situ form into which tremie concrete or other infill material is placed directly without use of a cofferdam. The tremie concrete is designed to work in composite action with the precast concrete modules. Numerous in-depth investigations have been conducted by several Corps districts and their consultants to evaluate the feasibility of the in-the-wet method at various potential sites of U.S. inland waterways. These studies have shown that the innovative construction method can provide substantial benefits in cost, construction time, risk reduction, and facility utilization, while minimizing disruption to river traffic and reducing environmental impact.

The concrete industry has embraced innovation and ensured high levels of long-term performance and sustainability through creative applications in design and construction. As a construction material, the versatility of concrete and its intrinsic benefits mean it is still well placed to meet challenges of the construction industry. Indeed, concrete

Concrete will be the key material for Mankind to create the built environment of the next millennium. The requirements of this infrastructure will be both demanding, in terms of technical performance and economy, and yet be greatly varied, from architectural masterpieces to the simplest of utilities.Specialist techniques and materials for concrete construction forms the Proceedings of the three day international conference held during the Congress, creating with concrete, 6-10 September 1999, organised by the Concrete technology unit, University of Dundee.

This book comprises the proceedings of the Annual Conference of the Canadian Society of Civil Engineering 2021. The contents of this volume focus on specialty conferences in construction, environmental, hydrotechnical, materials, structures, transportation engineering, etc. This volume will prove a valuable resource for those in academia and industry.

This book provides a timely review on recent advancements in rock-filled concrete dam: a new type of dam originated from Tsinghua University in China. It covers historical overview of the development, filling process of high performance self-compacting concrete, mechanical and physical properties of rock-filled concrete, design of rock-filled concrete gravity dams and arch dams, as well as construction and quality control specifications. The book is intended for researchers, practicing engineers and graduate students who are interested in fundamental research and engineering design principles of rock-filled concrete dams. Successful insights gained from more than 120 rock-filled concrete dams completed or under construction in China are presented in this book, which can be useful references for all readers.