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

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.