1st Edition

Jet Grouting Technology, Design and Control

    304 Pages 162 B/W Illustrations
    by CRC Press

    304 Pages 162 B/W Illustrations
    by CRC Press

    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