Please use this identifier to cite or link to this item: http://dl.pgu.ac.ir/handle/Hannan/79637
Title: 3D Monte Carlo simulation of backscattered electron signal variation across pore-solid boundaries in cement-based materials
Keywords: Building & Construction;0905 Civil Engineering;1202 Building
Issue Date: 16-Sep-2016
9-Sep-2016
Publisher: Elsevier
Description: Three-dimensional (3D) Monte Carlo simulation was used to study the variation of backscattered electron (BSE) signal across pore-solid boundaries in cement-based materials in order to enhance quantitative analysis of pore structure. The effects of pore size, depth and boundary inclination angle were investigated. It is found that pores down to 1 nm can generate sufficient contrast to be detected. Visibility improves with larger pore size, smaller beam probe size and lower acceleration voltage. However, pixels in shallow pores or near pore boundaries display higher grey values (brightness) than expected due to sampling sub-surface or neighbouring solid material. Thus, cement-based materials may appear less porous or the pores appear smaller than they actually are in BSE images. Simulated BSE images were used to test the accuracy of the Overflow pore segmentation method. Results show the method is generally valid and gives low errors for pores that are 1 μm and greater.
Other Identifiers: 0008-8846
http://hdl.handle.net/10044/1/40005
https://dx.doi.org/10.1016/j.cemconres.2016.09.008
EP/K030760/1
Type Of Material: OTHER
Appears in Collections:Faculty of Engineering

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