Coral and Sea Water in Concrete


Book Description










Seawater in Concrete Mix


Book Description

In the near future, many parts of the world will suffer from a shortage of freshwater. Effective use of seawater in concrete production could therefore become a crucial technology. Seawater in Concrete Mix provides a detailed overview of the fundamental knowledge of concrete engineering that is essential for the usage of seawater-mixed concrete. According to the worldwide standard for reinforced concrete (RC), freshwater is typically used in concrete mixing rather than seawater. Yet a potential exists for the extensive use of seawater in concrete, especially with the addition of ground granulated blast-furnace slag, fly ash, or other mineral admixtures. The recent trend toward performance-based design makes this alternative more viable. The text is ideal for graduate students, researchers, concrete engineers, and all civil engineers who deal with concrete for infrastructure. Hidenori Hamada is Professor of Kyushu University, Japan. Nobuaki Otsuki is Professor Emeritus of Tokyo Institute of Technology and was Chairman of the JCI Technical Committee on the use of seawater in concrete. Takahiro Nishida is Senior Researcher of the Japanese National Institute of Maritime, Port and Aviation Technology.










Coral and Concrete


Book Description

Coral and Concrete, Greg Dvorak’s cross-cultural history of Kwajalein Atoll, Marshall Islands, explores intersections of environment, identity, empire, and memory in the largest inhabited coral atoll on earth. Approaching the multiple “atollscapes” of Kwajalein’s past and present as Marshallese ancestral land, Japanese colonial outpost, Pacific War battlefield, American weapons-testing base, and an enduring home for many, Dvorak delves into personal narratives and collective mythologies from contradictory vantage points. He navigates the tensions between “little stories” of ordinary human actors and “big stories” of global politics—drawing upon the “little” metaphor of the coral organisms that colonize and build atolls, and the “big” metaphor of the all-encompassing concrete that buries and co-opts the past. Building upon the growing body of literature about militarism and decolonization in Oceania, this book advocates a layered, nuanced approach that emphasizes the multiplicity and contradictions of Pacific Islands histories as an antidote to American hegemony and globalization within and beyond the region. It also brings Japanese, Korean, Okinawan, and American perspectives into conversation with Micronesians’ recollections of colonialism and war. This transnational history—built upon a combination of reflective personal narrative, ethnography, cultural studies, and postcolonial studies—thus resituates Kwajalein Atoll as a pivotal site where Islanders have not only thrived for thousands of years, but also mediated between East and West, shaping crucial world events. Based on multi-sited ethnographic and archival research, as well as Dvorak’s own experiences growing up between Kwajalein, the United States, and Japan, Coral and Concrete integrates narrative and imagery with semiotic analysis of photographs, maps, films, and music, traversing colonial tropical fantasies, tales of victory and defeat, missile testing, fisheries, war-bereavement rituals, and landowner resistance movements, from the twentieth century through the present day. Representing history as a perennial struggle between coral and concrete, the book offers an Oceanian paradigm for decolonization, resistance, solidarity, and optimism that should appeal to all readers far beyond the Marshall Islands.










Concrete for Large Floating Structures


Book Description

This report is the result of an investigation of the suitability of reinforced concrete as a structural and hull material for use in large floating platforms. History, materials, methods, and quality control requirements are reviewed. The findings support the conclusion that high quality concrete is acceptable and economical for application to large floating platforms, and that both design and quality control requirements can be met within the present state of the concrete art.