Permeation Grouting for Liquefaction Countermeasures


Book Description

Academic and industry experts describe the use of chemical (permeation) grouting beneath an airport runway to improve ground resistance to liquefaction. They present the cost, environmental, and operational benefits; specifications; methodology; and practical results of this cutting-edge method. Because transportation infrastructure such as ports and airports are required to operate even in the event of a large earthquake, they must be resilient against liquefaction. Through contributions from experts in academia and industry, this book describes the discovery of construction defects at three airports in Japan and the subsequent project to repair and strengthen the ground using chemical grouting using environmentally friendly colloidal silica, the first time this technique was used in Japan. This book first describes chemical grouting and its benefits, its specifications, and field investigation results of its ground improvement performance. Next, it demonstrates a numerical and probabilistic method to model spatial variability in material properties of field data on improved ground. Finally, it explains a performance-based verification for airport runway availability in terms of bearing capacity and runway flatness after a large earthquake. Through its clear explanations, this book enables readers to implement chemical grouting and enjoy the cost, environmental, access, and operational benefits of this technique over traditional methodologies that would require temporary site closure and large-scale excavation. Because the concept and methodology described in this book are applicable to various geological, geotechnical, and seismological conditions depending on the location and structural and operational conditions depending on the infrastructure type, this book is a useful resource for geotechnical and other infrastructure engineers who must strengthen the ground without disrupting normal operations.




Geotechnics for Sustainable Infrastructure Development


Book Description

This book presents 09 keynote and invited lectures and 177 technical papers from the 4th International Conference on Geotechnics for Sustainable Infrastructure Development, held on 28-29 Nov 2019 in Hanoi, Vietnam. The papers come from 35 countries of the five different continents, and are grouped in six conference themes: 1) Deep Foundations; 2) Tunnelling and Underground Spaces; 3) Ground Improvement; 4) Landslide and Erosion; 5) Geotechnical Modelling and Monitoring; and 6) Coastal Foundation Engineering. The keynote lectures are devoted by Prof. Harry Poulos (Australia), Prof. Adam Bezuijen (Belgium), Prof. Delwyn Fredlund (Canada), Prof. Lidija Zdravkovic (UK), Prof. Masaki Kitazume (Japan), and Prof. Mark Randolph (Australia). Four invited lectures are given by Prof. Charles Ng, ISSMGE President, Prof.Eun Chul Shin, ISSMGE Vice-President for Asia, Prof. Norikazu Shimizu (Japan), and Dr.Kenji Mori (Japan).




Ground Improvement for Coastal Engineering


Book Description

This practical guide covers the investigation, design, and execution of ground improvement in coastal areas. It explains how to decide whether ground improvement is necessary, which method to choose, and how to design and execute it. Recognising the soft ground commonly found in coastal areas, the book introduces various ground improvement technologies including seismic reinforcement and liquefaction countermeasures and addresses the measures to be taken to sustain ground against external forces. Reliable Japanese ground improvement technologies are presented as well as the latest Building Information Modelling (BIM/Information and Communication Technology (ICT) used in their execution. The book also includes measures that can be taken against contaminated soil and considers ground improvement design on site. Unique focus on coastal applications Summarises leading edge Japanese practice The book suits professionals in the ground improvement industry, especially geotechnical designers and contractors.




Soil Stress-Strain Behavior: Measurement, Modeling and Analysis


Book Description

The material in this work is focused on recent developments in research into the stress-strain behavior of geomaterials, with an emphasis on laboratory measurements, soil constitutive modeling and behavior of soil structures (such as reinforced soils, piles and slopes). The latest advancements in the field, such as the rate effect and dynamic behavior of both clay and sand, behavior of modified soils and soil mixtures, and soil liquefaction are addressed.




Earthquake Geotechnical Engineering


Book Description

This book contains the full papers on which the invited lectures of the 4th International Conference on Geotechnical Earthquake Engineering (4ICEGE) were based. The conference was held in Thessaloniki, Greece, from 25 to 28 June, 2007. The papers offer a comprehensive overview of the progress achieved in soil dynamics and geotechnical earthquake engineering, examine ongoing and unresolved issues, and discuss ideas for the future.




Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering


Book Description

The 16th ICSMGE responds to the needs of the engineering and construction community, promoting dialog and exchange between academia and practice in various aspects of soil mechanics and geotechnical engineering. This is reflected in the central theme of the conference 'Geotechnology in Harmony with the Global Environment'. The proceedings of the conference are of great interest for geo-engineers and researchers in soil mechanics and geotechnical engineering. Volume 1 contains 5 plenary session lectures, the Terzaghi Oration, Heritage Lecture, and 3 papers presented in the major project session. Volumes 2, 3, and 4 contain papers with the following topics: Soil mechanics in general; Infrastructure and mobility; Environmental issues of geotechnical engineering; Enhancing natural disaster reduction systems; Professional practice and education. Volume 5 contains the report of practitioner/academic forum, 20 general reports, a summary of the sessions and workshops held during the conference.













Ground Improvement, Third Edition


Book Description

When finding another location, redesigning a structure, or removing troublesome ground at a project site are not practical options, prevailing ground conditions must be addressed. Improving the ground—modifying its existing physical properties to enable effective, economic, and safe construction—to achieve appropriate engineering performance is an increasingly successful approach. This third edition of Ground Improvement provides a comprehensive overview of the major ground improvement techniques in use worldwide today. Written by recognized experts who bring a wealth of knowledge and experience to bear on their contributions, the chapters are fully updated with recent developments including advancements in equipment and methods since the last edition. The text provides an overview of the processes and the key geotechnical and design considerations as well as equipment needed for successful execution. The methods described are well illustrated with relevant case histories and include the following approaches: Densification using deep vibro techniques or dynamic compaction Consolidation employing deep fabricated drains and associated methods Injection techniques, such as permeation and jet grouting, soil fracture grouting, and compaction grouting New in-situ soil mixing processes, including trench-mixing TRD and panel-mixing CSM approaches The introductory chapter touches on the historical development, health and safety, greenhouse gas emissions, and two less common techniques: blasting and the only reversible process, ground freezing. This practical and established guide provides readers with a solid basis for understanding and further study of the most widely used processes for ground improvement. It is particularly relevant for civil and geotechnical engineers as well as contractors involved in piling and ground engineering of any kind. It would also be useful for advanced graduate and postgraduate civil engineering and geotechnical students.