Integration of computational model and SEM imaging technology to investigate internal
Document Type
Conference Proceeding
Publication Date
6-5-2013
Abstract
This study investigates the internal-frost damage due to ice crystallization pressure in capillary pores of concrete. The pore structures have significant impact on freeze-thaw durability of cement/concrete samples. The scanning electron microscope (SEM) techniques were applied to characterize freeze-thaw damage within pore structure. The digital sample was generated from SEM imaging processing. In the microscale pore system, the crystallization pressures at subcooling temperatures were calculated using interface energy balance with thermodynamic analysis. The largest crystallization pressure on the pore wall was used for the fracture simulation with the developed Extended Finite Element Model (XFEM). The largest crystallization pressure on the pore wall was used for the fracture simulation with the developed Extended Finite Element Model (XFEM). One comparison study between model simulation and test results indicates that internal-frost damage model can reasonably predict the crack nucleation and propagation within multiphase cement microstructure. © 2013 SPIE.
Publication Title
Proceedings of SPIE - The International Society for Optical Engineering
Recommended Citation
Dai, Q.,
&
Ng, K.
(2013).
Integration of computational model and SEM imaging technology to investigate internal.
Proceedings of SPIE - The International Society for Optical Engineering,
8694.
http://doi.org/10.1117/12.2013957
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/12036