A: Optical image of the nanoindentation grid performed on sample C3. B, C, E, F: Images of the elemental distribution of Ca, Si, K, and Na. D: an electron microphotograph of the same area

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... sample C3 is tested by nanoindentation, and Fig. 3 shows an optical photograph of the indentation grid 210 � 210 μm (Fig. 3A). The dark region visible on the upper right side of the image corresponds to an area that has been damaged during the polishing step. Fig. 3B-F shows maps of the distribution of the following elements: Ca (B), Si (C), K (E), Na (F) and an SE image of the same ...

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... sample C3 is tested by nanoindentation, and Fig. 3 shows an optical photograph of the indentation grid 210 � 210 μm (Fig. 3A). The dark region visible on the upper right side of the image corresponds to an area that has been damaged during the polishing step. Fig. 3B-F shows maps of the distribution of the following elements: Ca (B), Si (C), K (E), Na (F) and an SE image of the same area (D). The cracks observed in the SE image result from the partial ...

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... sample C3 is tested by nanoindentation, and Fig. 3 shows an optical photograph of the indentation grid 210 � 210 μm (Fig. 3A). The dark region visible on the upper right side of the image corresponds to an area that has been damaged during the polishing step. Fig. 3B-F shows maps of the distribution of the following elements: Ca (B), Si (C), K (E), Na (F) and an SE image of the same area (D). The cracks observed in the SE image result from the partial dehydration of the sample under high vacuum conditions in the electron microscope. The distribution of Ca is almost uniform, except for dark areas ...

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... its distribution can be used as a marker for porosity. Spectra of C-S-H without or with a lower amount of isopropanol bands can be regarded as belonging to HD C-S-H (Fig. 1). The results of multivariate GMM clustering of the nanomechanical properties are presented in Fig. 4C-F. In Fig. 4C the nanoindentation results from the damaged area (see Fig. 3A and D) are excluded from the clustering process. The remaining indentations show about 70% values for hardness around 1 GPa. Their distribution coincides almost perfectly with the distribution of LD C-S-H from the Raman maps. About 25% indents show an average hardness of about 2 GPa, which coincides with the HD C-S-H areas in the Raman ...

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... sample C3 is tested by nanoindentation, and figure 3 shows an optical photograph of the indentation grid 210 x 210 m ( Figure 3A). The dark region visible on the upper right side of the image corresponds to an area that has been damaged during the polishing step. ...

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... sample C3 is tested by nanoindentation, and figure 3 shows an optical photograph of the indentation grid 210 x 210 m ( Figure 3A). The dark region visible on the upper right side of the image corresponds to an area that has been damaged during the polishing step. ...

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... distribution can be used as a marker for porosity. Spectra of C-S-H without or with a lower amount of isopropanol bands can be regarded as belonging to HD C-S-H (Fig. 1). The results of multivariate GMM clustering of the nanomechanical properties are presented in Fig. 4C and 4F. In Fig. 4C the nanoindentation results from the damaged area ( see Fig. 3A, 3D) are excluded from the clustering process. The remaining indentations show about 70 % values for hardness around 1 GPa. Their distribution coincides almost perfectly with the distribution of LD C-S-H from the Raman maps. About 25 % indents show an average hardness of about 2 GPa, which coincides with the HD C-S-H areas in the Raman ...