Note: Cover -- Half Title -- Title Page -- Copyright Page -- Table of Contents -- Preface -- Committees -- Keynote Lectures -- Sensitive pyroclastic-derived halloysitic soils in northern New Zealand: Interplay of microstructure, minerals, and geomechanics -- Mechanical behavior of volcanic rocks -- From micro to macro: An investigation of the geomechanical behaviour of pumice sand -- Climatic effects on pore-water pressure, deformation and stress mobilization of a vegetated volcanic soil slope in Hong Kong -- Unstable geotechnical problems of columnar jointed rock mass and volcanic tuff soil induced by underground excavation: A case study in the Baihetan hydropower station, China -- Session 1: Structural features of volcanic materials -- A micro- and macro-scale investigation of the geotechnical properties of a pyroclastic flow deposit of the Colli Albani -- New geotechnical classification proposed for low density pyroclastic rocks -- Alteration of volcanic rocks on the geothermal fields of Kuril-Kamchatka arc -- Hydrothermally altered rocks as a field of dangerous slope processes (the Geysers Valley, Kamchatka peninsula, Russia) -- Effects of compaction conditions on undrained strength and arrangements of soil particles for Shikotsu volcanic soil -- Session 2: Mechanical behaviour of volcanic rocks -- Microstructural features and strength properties of weak pyroclastic rocks from Central Italy -- Compressibility of geothermal reservoir rocks from the Wairakei-Tauhara fields with insights gained from geotechnical laboratory testing and scanning electron microscope imaging -- Geomechanical characterization of different lithofacies of the Cuitzeo ignimbrites -- Triaxial and shear box tests on a pyroclastic soft rock -- Failure criterion for low density pyroclasts. , Relationship between the isotropic collapse pressure and the uniaxial compressive strength, and depth of collapse, both derived from a new failure criterion for low density pyroclasts -- Correlation between the isotropic collapse pressure and the unit weight for low density pyroclasts -- Underground caverns in volcanic rocks: Geological aspects and associated geotechnical behaviour of pyroclastic rocks -- Session 3: Mechanical behaviour of volcanic soils -- One-dimensional compression of volcanic ash of Mount Etna -- Geotechnical characterization of Mount Etna ash for its reuse preserving human health -- Geotechnical issues concerning the material removal and reuse of pyroclastic soils -- VS measurements in volcanic urban areas from ambient noise Rayleigh waves -- Collapse-upon-wetting behaviour of a volcanic soil -- Experimental investigation and constitutive modelling for an unsaturated pyroclastic soil -- Shear strength of a pyroclastic soil measured in different testing devices -- Experimental study on the shear moduli of volcanic soil with various fines content on equivalent granular void ratio -- A laboratory investigation on the cyclic liquefaction resistance of pyroclastic soils -- Experimental evaluation of liquefaction resistance for volcanic coarse-grained soil in cold region using temperature- and/or moisture-controlled triaxial apparatus -- One-dimensional consolidation of unsaturated pyroclastic soils: Theoretical analysis and experimental results -- A new rheometer for mud and debris flow -- Hydraulic characterization of an unsaturated pyroclastic slope by in situ measurements -- The behaviour of Hong Kong volcanic saprolites in one-dimensional compression -- Microstructure insights in mechanical improvement of a lime-stabilised pyroclastic soil -- Dynamics of volcanic sand through resonant column and cyclic triaxial tests. , Session 4: Geotechnical aspects of natural hazards -- Geological evolution of the Ischia volcanic complex (Naples Bay, Tyrrhenian sea) based on submarine seismic reflection profiles -- Investigation on the hydraulic hysteresis of a pyroclastic deposit -- An investigation of infiltration and deformation processes in layered small-scale slopes in pyroclastic soils -- Rainfall-induced slope instabilities in pyroclastic soils: The case study of Mount Albino (Campania region, southern Italy) -- Geotechnical characterization and seismic slope stability of rock slopes in the Port Hills during the New Zealand 2011 Canterbury Earthquakes -- High-resolution geological model of the gravitational deformation affecting the western slope of Mt. Epomeo (Ischia) -- Geo-engineering contributions to improve volcanic rock and soil slopes stabilization -- Wave erosion mechanism of volcanic embankment subjected to cyclic loadings -- Earthquake-induced flow-type slope failures in volcanic sandy soils and tentative evaluation of the fluidization properties of soils -- Rock fall instabilities and safety of visitors in the historic rock cut monastery of Vardzia (Georgia) -- Integration of geotechnical modeling and remote sensing data to analyze the evolution of an active volcanic area: The case of the New South East Crater (Mount Etna) -- New mapping techniques on coastal volcanic rock platforms using UAV LiDAR surveys in Pico Island, Azores (Portugal) -- Cyclical suction characteristics in unsaturated slopes -- Session 5: Geotechnical problems of engineering structures -- The application of grouting technique to volcanic rocks and soils, to solve two difficult tunnelling problems -- Study on volcanic sediment embankment collapse in the 2011 Earthquake off the Pacific Coast of Tohoku. , Numerical analysis of effects of water leakage with loss of fines on concrete tunnel lining -- Excavations in the Neapolitan Subsoil: The experience of the Toledo Station service tunnel -- Partial reactivation of a DGSD of ignimbrite and tuff in an alpine glacial valley in Northern Italy -- Vertical bearing mechanism of pile foundation in volcanic ash soil -- Author index.

Note: Cover -- Half Title -- Title Page -- Table of Contents -- Preface -- Committees -- Keynote Lectures -- Sensitive pyroclastic-derived halloysitic soils in northern New Zealand: Interplay of microstructure, minerals, and geomechanics -- Mechanical behavior of volcanic rocks -- From micro to macro: An investigation of the geomechanical behaviour of pumice sand -- Climatic effects on pore-water pressure, deformation and stress mobilization of a vegetated volcanic soil slope in Hong Kong -- Unstable geotechnical problems of columnar jointed rock mass and volcanic tuff soil induced by underground excavation: A case study in the Baihetan hydropower station, China -- Session 1: Structural features of volcanic materials -- A micro- and macro-scale investigation of the geotechnical properties of a pyroclastic flow deposit of the Colli Albani -- New geotechnical classification proposed for low density pyroclastic rocks -- Alteration of volcanic rocks on the geothermal fields of Kuril-Kamchatka arc -- Hydrothermally altered rocks as a field of dangerous slope processes (the Geysers Valley, Kamchatka peninsula, Russia) -- Effects of compaction conditions on undrained strength and arrangements of soil particles for Shikotsu volcanic soil -- Session 2: Mechanical behaviour of volcanic rocks -- Microstructural features and strength properties of weak pyroclastic rocks from Central Italy -- Compressibility of geothermal reservoir rocks from theWairakei-Tauhara fields with insights gained from geotechnical laboratory testing and scanning electron microscope imaging -- Geomechanical characterization of different lithofacies of the Cuitzeo ignimbrites -- Triaxial and shear box tests on a pyroclastic soft rock -- Failure criterion for low density pyroclasts. , Relationship between the isotropic collapse pressure and the uniaxial compressive strength, and depth of collapse, both derived from a new failure criterion for low density pyroclasts -- Correlation between the isotropic collapse pressure and the unit weight for low density pyroclasts -- Underground caverns in volcanic rocks: Geological aspects and associated geotechnical behaviour of pyroclastic rocks -- Session 3: Mechanical behaviour of volcanic soils -- One-dimensional compression of volcanic ash of Mount Etna -- Geotechnical characterization of Mount Etna ash for its reuse preserving human health -- Geotechnical issues concerning the material removal and reuse of pyroclastic soils -- VS measurements in volcanic urban areas from ambient noise Rayleigh waves -- Collapse-upon-wetting behaviour of a volcanic soil -- Experimental investigation and constitutive modelling for an unsaturated pyroclastic soil -- Shear strength of a pyroclastic soil measured in different testing devices -- Experimental study on the shear moduli of volcanic soil with various fines content on quivalent granular void ratio -- A laboratory investigation on the cyclic liquefaction resistance of pyroclastic soils -- Experimental evaluation of liquefaction resistance for volcanic coarse-grained soil in cold region using temperature- and/or moisture-controlled triaxial apparatus -- One-dimensional consolidation of unsaturated pyroclastic soils: Theoretical analysis and experimental results -- A new rheometer for mud and debris flow -- Hydraulic characterization of an unsaturated pyroclastic slope by in situ measurements -- The behaviour of Hong Kong volcanic saprolites in one-dimensional compression -- Microstructure insights in mechanical improvement of a lime-stabilised pyroclastic soil -- Dynamics of volcanic sand through resonant column and cyclic triaxial tests. , Session 4: Geotechnical aspects of natural hazards -- Geological evolution of the Ischia volcanic complex (Naples Bay, Tyrrhenian sea) based on submarine seismic reflection profiles -- Investigation on the hydraulic hysteresis of a pyroclastic deposit -- An investigation of infiltration and deformation processes in layered small-scale slopes in pyroclastic soils -- Rainfall-induced slope instabilities in pyroclastic soils: The case study of Mount Albino (Campania region, southern Italy) -- Geotechnical characterization and seismic slope stability of rock slopes in the Port Hills during the New Zealand 2011 Canterbury Earthquakes -- High-resolution geological model of the gravitational deformation affecting the western slope of Mt. Epomeo (Ischia) -- Geo-engineering contributions to improve volcanic rock and soil slopes stabilization -- Wave erosion mechanism of volcanic embankment subjected to cyclic loadings -- Earthquake-induced flow-type slope failures in volcanic sandy soils and tentative evaluation of the fluidization properties of soils -- Rock fall instabilities and safety of visitors in the historic rock cut monastery of Vardzia (Georgia) -- Integration of geotechnical modeling and remote sensing data to analyze the evolution of an active volcanic area: The case of the New South East Crater (Mount Etna) -- New mapping techniques on coastal volcanic rock platforms using UAV LiDAR surveys in Pico Island, Azores (Portugal) -- Cyclical suction characteristics in unsaturated slopes -- Session 5: Geotechnical problems of engineering structures -- The application of grouting technique to volcanic rocks and soils, to solve two difficult tunnelling problems -- Study on volcanic sediment embankment collapse in the 2011 Earthquake off the Pacific Coast of Tohoku. , Numerical analysis of effects of water leakage with loss of fines on concrete tunnel lining -- Excavations in the Neapolitan Subsoil: The experience of the Toledo Station service tunnel -- Partial reactivation of a DGSD of ignimbrite and tuff in an alpine glacial valley in Northern Italy -- Vertical bearing mechanism of pile foundation in volcanic ash soil -- Author index.