14-17 May 2018
New Orleans
US/Central timezone

Capillary-condensation-induced stress in complex multi-scale porous materials

15 May 2018, 15:40
15m
New Orleans

New Orleans

Oral 20 Minutes MS 1.12: Fluids in Nanoporous Media Parallel 5-E

Speaker

Mr Edmond Zhou (MIT)

Description

Capillary condensation in a nano-porous material can induce high local stresses affecting its transport, tribological and rheological properties, promoting cracking and can eventually lead to failure of the material.
However it is a non-trivial problem to determine the capillary stress field in realistic 3D structures covering the entire range of degree of liquid saturation.
We propose a general and quantitative numerical framework to address the chemo-poro-mechanics in realistic complex pore networks arising from liquid stresses at all range of relative humidities, exemplified with a mesoscale model of cement.
We discuss the microscopic irreversibility observed in our simulations and its implications on cement drying shrinkage

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Primary authors

Mr Edmond Zhou (MIT) Dr Katerina Ioannidou (MIT) Prof. Enrico Maseoro (New Castle University) Dr Mohammad mirzadeh (MIT) Prof. Roland Pellenq (MIT) Prof. Martin Bazant (MIT)

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