A Fast Testing Method for Discriminating Hardened Cement Paste Reactivity with External Sulphate
International audience
Micro-modelling of non-standard masonry structures under blast loads
Masonry structures are often characterized by complex, non-planar geometries. This is also the case for historical and monumental structures. Here we investigate the dynamic behaviour of non-standard, curvilinear masonry geometries, such as vaults, subjected to blast loading. We use the Discrete Element Method (DEM) for modelling the dynamic struct...
Micro-cantilever testing on the short-term creep behaviour of cement paste at micro-scale
International audience
Menstrual Variation in Experimental Pain: Correlation with Gonadal Hormones
Published in Neuropsychobiology
Background: The results of studies examining the response to experimental pain during the menstrual cycle are conflicting because of differences in the definitions of the menstrual period, outcome measures and types of experimental pain stimulation. So far, there have been only a few studies correlating experimental pain with the levels of gonadal ...
Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thought
Published in Nature Communications
The authors here report tensile properties of polycrystalline methane hydrate at the micron scale by applying a contactless, thermos-induced stress to a tenuous shell of hydrate grown in a thin glass capillary. The results suggest that the cohesive strength of methane hydrate in marine settings may be an order of magnitude less than currently thoug...
Revisiting thermo-poro-mechanics under adsorption: Formulation without assuming Gibbs-Duhem equation
International audience
May self-diffusion of ions computed from molecular dynamics explain the electrical conductivity of pore solutions in cem...
Published in Materials and Structures
Understanding the physical origins of the electrical response of cement-based materials is crucial to enhance the capabilities of non-destructive techniques, especially those based on resistivity or electrochemical measurements deployed in durability assessment and monitoring study of concrete structures. In this article, we show that using the inf...
A two-surface thermomechanical plasticity model considering thermal cyclic behavior
In thermal-related engineering such as thermal energy structures and nuclear waste disposal, it is essential to well understand volume change and excess pore water pressure buildup of soils under thermal cycles. However, most existing thermo-mechanical models can merely simulate one heating–cooling cycle and fail in capturing accumulation phenomeno...
Tensile mechanics of polymeric foam ribbons
Whereas size reduction that accompanies new technologies calls for more complex and more constrained shapes for foams to be used as seals, ribbons or surface coatings, little is known about the mechanics of foam systems characterized by a potentially small number of pores across their thickness and possessing parietal or free surface pore layers. E...
FFT-based homogenisation of the effective mechanical response of gas hydrate bearing sediments
Modelling the mechanical response of gas hydrate bearing sediments has become a crucial issue in the environmental field. The scarcity of experimental data due to the instability of the gas hydrates makes it difficult to develop accurate mechanical constitutive models. This paper suggests a numerical homogenisation method to simulate the response o...
