Investigation of the modification process of natural sedimentary calcite by organosilicon compounds

Investigating the influence of volumetric hydrophobization on the formation of phase composition of cement stone and its physical-mechanical properties

“…Comparison of the infrared spectra of sample without an admixture and with the admixture GKZH-11K indicates that their spectra include bands centered on frequencies 3,628.1 cm -1 and 3,640.4 cm -1 , which relate to the valence fluctuations of OH groups; 3,373.2 cm -1 , 3,373.9 cm -1 which relate to the valence fluctuations of OH groups of adsorbed water [11]; 1,633.1 cm -1 , 1,645.3 cm -1 -to the deforming fluctuations of adsorbed water; 1,416.6 cm -1 , 1,404.2 cm -1 , 947.75 cm -1 , 874.6 cm -1 , 855 cm -1 -which relate to the valence fluctuations of Si-O bonds in calcium silicates. An increase in the intensity of the split absorption bands with a maximum of 519.9 cm -1 in the samples with GKZH-11K is associated to the additional formation of bonds Si-O-Ca, in the newly created water repellent films.…”