1st Edition
Jet Grouting Technology, Design and Control
Unlike similar titles providing general information on ground improvement, Jet Grouting: Technology, Design and Control is entirely devoted to the role of jet grouting – its methods and equipment, as well as its applications. It discusses the possible effects of jet grouting on different soils and examines common drawbacks, failures and disadvantages, recent advances, critical reviews, and the range of applications, illustrated with relevant case studies.
The book addresses several topics involving this popular worldwide practice including technology issues, the interpretation of the mechanisms taking place during the grouting, the quantitative prediction of their effects, the design of jet-grouted structures, and procedures for controlling jet grouting results.
- Discusses the design criteria for jet grouting projects and reviews existing design rules and codes of practice of different countries
- Provides practical methods for design calculations of the most important jet-grouted structures such as foundations, earth retaining walls, water cut-offs, bottom plugs, and provisional tunnel supports
- Includes the current standard control methods and most innovative techniques reported for the implementation of quality control and quality assurance procedures
Jet Grouting: Technology, Design and Control
analyzes the typical jet-grouted structures, such as foundations, earth retaining walls, water cut-offs, bottom plugs and tunnel supports, and serves as a practical manual for the correct use of jet grouting technology.Introduction
Ground improvement and geotechnical engineering
Brief history of jet grouting
The reasons for success
Why a book on jet grouting?
Technology
Technological features
Jet grouting procedure
Jet grouting systems
Columns overlapping
Columns reinforcement
Grout mix and spoil
Jet grouting plant
Treatment parameters
Mechanisms and effects
Preliminary considerations
Submerged jet
Jet–soil interaction
Column properties
Introduction
Treatment efficiency
Diameter of columns
Deviation of the columns axis
Jet-grouted material
Jet-grouted structures
Elements and structures
Foundations
Retaining structures
Water barriers
Tunnels
Other applications
Design principles
Basic considerations
From columns to structures
Design approaches
Design properties of columns
Design examples
Selected applications
Foundations
Tunnel canopies and vertical shafts
Hydraulic cutoffs
Bottom plugs
Controls
Control objectives
Field trials
Control rules and guidelines
Materials qualification
Treatment control
Grout preparation
Properties of the jet-grouted structure
Performance of the jet-grouted elements
Monitoring of the surrounding structures
References
Index
Biography
Paolo Croce graduated with a degree in civil engineering at the University of Napoli Federico II in 1979. He finished his master’s degree in civil engineering from the University of Colorado in 1982. He is a professor of geotechnical engineering at the University of Cassino and Southern Lazio, Italy. He is a member of the American Society of Civil Engineers (ASCE) and the Italian Geotechnical Society (Associazione Geotecnica Italiana [AGI]), where he is a member of the AGI Committee for the Guidelines on Jet Grouting. He has 30 years of professional experience, and has authored several articles in geotechnical journals and conferences.
Alessandro Flora
graduated with a degree in civil engineering at the University of Napoli Federico II in 1989. He finished his PhD in geotechnical engineering jointly from the University of Napoli Federico II and Roma La Sapienza in 1995. He is a professor of geotechnical engineering at the University of Napoli Federico II. He is the author of approximately 100 research articles published in main international journals, conference proceedings, and books. He is a member of the Italian Geotechnical Society (Associazione Geotecnica Italiana [AGI]), where he is a member of the AGI Committee for the Guidelines on Jet Grouting.Giuseppe Modoni
graduated with a degree in civil engineering at the University of Napoli Federico II in 1994. He finished his PhD in geotechnical engineering jointly from the University of Rome and the University of Napoli in 1999. He is a professor of geotechnical engineering at the University of Cassino and Southern Lazio (Italy). He is the author of research articles published in main international journals, conference proceedings, and books. He is a member of the Italian Geotechnical Society (Associazione Geotecnica Italiana [AGI]). He is also a member of the AGI Committee for the Guidelines on Jet Grouting."… one of the best available on such a specific and important topic. This book should prove useful for a range of readers, from those who need to understand the scientific bases for designing an adequate solution, to those who search for better knowledge of the technology
itself."
—Proceedings of the Institution of Civil Engineers, January 2016"Unlike similar titles providing general information on ground improvement, this book is entirely devoted to the role of jet grouting — its methods and equipment, as well as its applications."
—T&UC, September 2015
"The topics, which range from the description of jet grouting and its principles to the study of case histories, are well organized and presented in a reader-friendly way… and will surely [make the book] an invaluable tool not only for geotechnical engineers, but also for specialized contractors, who occasionally do not have a theoretical framework to carry out the design of the treatment."
––Oscar Alberto Vardé, President, the Argentine Engineering National Academy, Buenos Aires, Argentina
"… the authors have made a brave attempt in this book to demystify the practice of jet grouting. There appears to be significant detail associated with the technology used, the processes and the mechanisms induced in the ground. The text is clear and easily understandable. The figures are sufficiently simple to demonstrate the essential processes. The design process is dealt with in two chapters and should aim to bring greater confidence to the design of jet-grouted structures."
––Dr Caesar Merrifield, Senior Principal, Coffey Geotechnics, Ontario, Canada
"This book is exceptional in that it is all inclusive, comprehensive and even handed in its coverage."
––Donald A. Bruce, GEOSYSTEMS, L.P., Venetia, Pennsylvania