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Freeze-thaw modelling in Concrete

Posted 2017年7月23日 GMT-4 03:33 Heat Transfer & Phase Change, Microfluidics, Materials, Mesh, Structural Mechanics Version 5.3 0 Replies

Ali Rahimi
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Hi,

I want to build a model for effect of repeated freeze-thaw cycles on concrete.
The water freezes in cement-paste voids and existing micro-cracks (NOT in gravels) , then the cracks expands and slightly reduces mechanical properties of concrete.
The ice then thawed and the process repeated, say 100 cycles.

I built a 2-D multiphase model consist of cement-paste surrounding aggregates, but how should model pre-cracks? (or micro air-voids, in some kinds of concrete)

and how to model progressive process cracking? a moving mesh ?

Thanks a lot in anticipation !

0 Replies Last Post 2017年7月23日 GMT-4 03:33
COMSOL Moderator

Hello Ali Rahimi

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