Publications by Alessio Ferrari

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The Opalinus Clay shale formation is considered as a potential host geomaterial for the Swiss deep geological repository for radioactive waste. It presents different facies and it is characterised by a multi-scale heterogeneous composition, by a typical fi ...

The behaviour of the pile-soil interface is important for the response of floating piles in terms of displacement and lateral friction. Regarding energy piles, which couple the structural roles of deep foundations with the principle of shallow geothermal e ...

The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay (B) over bar (0 )-> K-S(0)pi(+)pi(- ) is studied using a pp collision data sample recorded with the LHCb detector, corresponding to an integrated luminosity of 3.0 fb(-1). ...

Understanding gas transport processes in clay barriers is crucial for assessing the long-term safety of geological repositories for radioactive waste. Fundamental and well-designed experimental research at the laboratory scale is an indispensable prerequis ...

The first observation of the B-s(0) -> (D) over bar*(0)phi decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb -1 , collected with the LHCb d ...

From samples of pp collision data collected by the LHCb experiment at root s = 7, 8 and 13 TeV, corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb(-1), respectively, a peak in both the Lambda(0)(b) K- and Xi(0)(b)pi(-) invariant mass spectra i ...

How water saturation affects elastic properties is particularly important for analyses of gas shales in unconventional reservoirs, but experimental data in defined partially saturated conditions are rare. We show that the elastic moduli of a gas shale vary ...

Forward top quark pair production is studied in pp collisions in the mu eb final state using a data sample corresponding to an integrated luminosity of 1.93 fb(-1) collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The cross-section i ...

Geotechnical problems with total stress changes occurring rapidly relative to the soil consolidation time can be conveniently addressed using an effective stress-based approach. For saturated states, analytical formulations of pore-pressure coefficients ad ...

For the characterization of gas migration through a low-permeability clay host rock for deep underground repositories, a comprehensive understanding of the relevant phenomena of gas and fluid flow through low-permeability clay is required. The National Coo ...

Interest in the hydraulic and mechanical characterization of shales has grown in recent years, because of their application in the context of energy geotechnics. In the frame of nuclear waste disposal shales are considered as host formations for the placem ...

The main purpose behind the use of energy piles is to enable the exploitation of geothermal energy for meeting the heating/cooling demands of buildings in an efficient and environment-friendly manner. However, the long-term performance of energy piles in d ...

Compacted scaly clays are complex geomaterials widely used for the realization of dam cores and waste dump liners. This research aims to investigate the swelling/shrinkage behavior of these geomaterials subjected in an oedometric cell to complex hydromecha ...

Opalinus Clay shale, the selected host geomaterial of a high-level radioactive waste repository in Switzerland, was sourced at shallow depth in a borehole in the northern part of the country. Pairs of specimens, retrieved from the same depth were prepared ...

Deep disposal of high-level radioactive waste is the preferred solution worldwide for the long-term disposal of nuclear waste. This concept involves a series of geological and engineered barriers that provide isolation of the waste from the biosphere. Most ...

Retaining structures above groundwater level support soils that are usually in a state of partial saturation and subject to the actions of atmospheric agents. The current design approach considers the possible extremes of soil conditions - either totally d ...

The trend in modern unsaturated soil mechanics is to enhance the physical understanding of the soil water retention properties. It is agreed that the retention characteristics depend on the state of compaction and are related to the deformability of the me ...

The decay Lambda(0)(b) -> Lambda(+)(c)p (p) over bar pi(-) is observed using pp collision data collected with the LHCb detector at centre-of-mass energies of root s = 7 and 8 Tev, corresponding to an integrated luminosity of 3 fb(-1). The ratio of branchin ...

Triaxial testing of argillaceous rocks and shales is significantly more challenging than conventional rock mechanical testing. The challenges are mainly related to the very low permeability of these geomaterials, and their sensitivity to exposure of atmosp ...

This paper presents a geomechanical model that was developed to investigate the behaviour of a natural slope located on the bank of the Rhine between the towns of Stein and Mumpf in Switzerland. The slope, affected by a large landslide, constitutes a relev ...

Alessio Ferrari

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The shear strength of Opalinus Clay shale in the remoulded state

Experimental investigations of the soil-concrete interface: physical mechanisms, cyclic mobilisation and behaviour at different temperatures

Amplitude Analysis of the Decay (B)over-bar(0 )-> K-S(0)pi(+)pi(- )and First Observation of the CP Asymmetry in (B)over-bar(0 )-> K* (892)(-)pi(+)

Comparative Study of Gas Testing Protocols in Clayey Rocks for Nuclear Waste Repositories

Observation of B-s(0) -> (D)over-bar*(0)phi and search for B-0 -> (D)over-bar(0)phi decays

Observation of a New Xi(-)(b) Resonance

Impact of Water Saturation on the Anisotropic Elastic Moduli of a Gas Shale

Measurement of forward top pair production in the dilepton channel in pp collisions at root s=13 TeV

Pore-pressure coefficients for unsaturated soils: generalized effective stress approach

Characterization of gas flow through low-permeability claystone: laboratory experiments and two-phase flow analyses

Numerical investigation on water exchange of shale samples

Long-term performance and life cycle assessment of energy piles in three different climatic conditions

Role of Stress History on the Swelling-Shrinkage Behavior of Compacted Scaly Clay

Anisotropic behaviour of shallow opalinus clay

Bentonite clay barriers in nuclear waste repositories

Life cycle environmental assessment of retaining walls in unsaturated soils

Investigations on water retention behaviour of deformable soils

Observation of the decay Lambda(0)(b) -> Lambda(+)(c)p(p)over-bar pi(-)

Benchmark study of undrained triaxial testing of Opalinus Clay shale: Results and implications for robust testing

Geomechanical modelling of a natural slope affected by a multiple slip surface failure mechanism