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Micro-structure of hydrophobic coatings A1 on the micro-structure of mortar: (a) A1.4—an almost invisible thin water-repellent film that has thoroughly covered the surface of the sample (×500), (b) A1.4—polysiloxane gel molecules (×5000), (c) A1.4—micro-area well-developed C-S-H phase crystals (×104), (d) results of elemental analysis in EDS micro-area from the surface of hydrophobized samples.
