| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Diambra, Andrea
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Lateral bearing factors and elastic stiffness factors for robotic CPT p-y module in undrained claycitations
- 2022Axial shear friction of polypropylene pipes against granular beds
- 2021Relationship between texture of polypropylene coatings and interface friction for sand at low stress levelscitations
- 2021Relationship between texture of polypropylene coatings and interface friction for sand at low stress levelscitations
- 2021Stiffness of granular soils under long-term multiaxial cyclic loadingcitations
- 20213D FE-informed laboratory soil testing for the design of offshore wind turbine monopilescitations
- 2021Stiffness of artificially cemented sands:insight on characterisation through empirical power relationshipscitations
- 2021Stiffness of artificially cemented sandscitations
- 2020Small to large strain mechanical behaviour of an alluvium stabilised with low carbon secondary mineralscitations
- 2020Polypropylene pipe interface strength on marine sandy soils with varying coarse fractioncitations
- 2019Strength anisotropy of fibre-reinforced sands under multiaxial loadingcitations
- 2019Cyclic polypropylene pipeline coating interface strength with granular materials at low stress
- 2019Cyclic polypropylene pipeline coating interface strength with granular materials at low stress
- 2019Stiffness of lightly cemented sand under multiaxial loadingcitations
- 2019Stiffness of lightly cemented sand under multiaxial loadingcitations
- 2019Effect of orientation of principal stress axes on cyclic liquefaction potential of soils
- 2019Effect of orientation of principal stress axes on cyclic liquefaction potential of soils
- 2018Compacted Chalk Putty-Cement Blends:Mechanical Properties and Performancecitations
- 2018Compacted Chalk Putty-Cement Blendscitations
- 2018Stress and time-dependent properties of crushed chalkcitations
- 2018Time and stress dependent strength and stiffness of reconstituted chalkcitations
- 2017Particle soil crushing: passive detection and interpretation
- 2017Evolution of elastic properties of granular soils under very large of number of multiaxial stress cycles
- 2016Evolution of small strain stiffness of granular soils with a large number of small loading cycles in the 3-D multiaxial stress space
- 2016Small strain stiffness evolution of reconstituted medium density chalk
- 2010Static liquefaction of fibre reinforced sand under monotonic loadingcitations
Places of action
| Organizations | Location | People |
|---|
document
Time and stress dependent strength and stiffness of reconstituted chalk
Abstract
<p>Chalk is generally a competent soft rock when found in its intact state. However, engineering working operations - such as pile driving, tunnelling, and earthworks - and weathering can destroy its structure creating a very weak silt and clay-size material, generally known as putty chalk. Nearly all occurrences of putty chalk can be problematic for geotechnical engineers, but laboratory studies of its mechanical properties remain infrequent. This paper presents the results of an extensive laboratory campaign aiming to provide an advanced mechanical characterization, from small strain stiffness to large strain strength and deformation properties, of reconstituted samples from crushed chalk (i.e. putty chalk). Using non-destructive wave velocity propagation measurements by bender elements, this paper provides a full characterization of the small strain shear stiffness (Go) of this material for a range of stress levels; including over-consolidation ratios. Attention is also directed to understand the effect of ageing on both strength and stiffness properties. A number of fully saturated reconstituted chalk samples were aged for different time periods up to 72 days under different isotropic stresses and subsequently sheared to failure. While age-related strength gains were found to be negligible, a consistent increase of the soil shear stiffness with time was observed by use of the wave propagation measuring method. Such increase in stiffness appears to be mostly related with secondary (creep) deformations, although some further increase was also observed when measurable deformations had ceased. Modelling of the shear behaviour of the material within a critical state framework is also attempted. The results of this experimental campaign may aid the design of geotechnical structures in contact with remoulded or putty chalk, especially when small deformation (serviceability) assessments are required.</p>