Fig. 9
From: Research on the material properties of concrete in subway stations after in service for 50 years
(a) Optical microscope imaging (with rebar holes); (b) Optical microscope imaging (in cement).
Fig. 9 | Scientific Reports
From: Research on the material properties of concrete in subway stations after in service for 50 years
(a) Optical microscope imaging (with rebar holes); (b) Optical microscope imaging (in cement).
