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Table 1 Mean volume percentage of pores in each brick type, mean pores accessible to the surface, and mean ratio of the surface-accessible pores to inaccessible interior pores (n = 5 for each brick type)

From: High-resolution micro-CT with 3D image analysis for porosity characterization of historic bricks

Brick Pore vol. % Percent accessible to surface Ratio of the surface accessible/inaccessible interior pores
A 18.5 15.9 9.0
B 23.7 22.4 31.8
C 16.9 14.9 7.6
D 21.0 18.2 18.6
E 21.0 18.9 10.5
F 36.8 36.1 65.8