691.311

gypsum binder, phosphogypsum binder, modifiers, hardening, microstructure, X-ray phase analysis, electron microscopic analysis, ultrasonic method, specific resistance.

The structure formation of hardened samples of gypsum and phosphogypsum binders (with a complex of additives) is investigated by X-ray diffraction analysis and electron microscopy. The influence of additives-modifiers on the composition of curing products and on the morphology of the hydrate formation – CaSO₄·2H₂O – is determined. X-ray diffraction patterns and electron micrographs of hardened gypsum and phosphogypsum binders are shown.

1. Escalante-Garcıa J. I., Rios-Escobar M., Gorokhovsky A., Fuentes A. F. Fluorgypsum binders with OPC and PFA additions, strength and reactivity as a function of component proportioning and temperature. Cement & Concrete Composites. 2008. No. 30. Р. 88–96.
2. Fraire-Luna P. E., Escalante-Garcia J. I., Gorokhovsky A.. Composite systems fluorgypsum–blastfurnance slag–metakaolin, strength and microstructures. Cement and Concrete Research. 2006. No. 36. Р. 1048–1055.
3. Arikan M., Sobolev K. The optimization of a gypsum-based composite material. Cement and Concrete Research, 2002. No. 32. Р. 1725–1728.
4. Yasniy P., Gomon S., Gomon P. On approximation of mechanical condition diagrams of coniferous and deciduous wood species on compression along the fibers. Scientific Journal of Ternopil National Technical University. 2020. Vol. 97. No. 1. P. 57–64.
5. Yasniy P., Gomon S. Timber with improved strength and deformable properties. Scientific Journal of Ternopil National Technical University. Ternopil: TNTU. 2020. Vol. 99. No. 3. P. 17–27.
6. Homon S., Vereshko O. Method of determination the initial elasticity modulus and timber deformation modulus under the influence of acid environment. Scientific Journal of Ternopil National Technical University. 2022. Vol. 105. No. 1. P. 29–39.
7. Keelly K. K., Southard J. C., Anderson C. T. Thermodinamic properties of gipsum and its dehidration products. Bureane of Miner: U.S. Cov. Print office W., 1941. 265 p.
8. Dvorkin L. Y., Dvorkin O. L., Myronenko A. V., Polishchuk-Herasymchuk T. O., Kundos M. H. Modyfikovani hipsovi i sulʹfatno-shlakovi v'yazhuchi ta materialy na yikh osnovi: monohrafiya. Rivne: NUVHP, 2011. 188 p. [In Ukrainian].
9. Dvorkin L. Y., Skrypnyk I. H., Zhytkovsʹkyy V. V., Polishchuk-Herasymchuk T. O. Osoblyvosti strukturoutvorennya hipsovoho kamenyu z dobavkamy. V Mezhdunarodnaya nauchno-praktycheskaya Ynternet-konferentsyya. Sostoyanye sovremennoy stroytelʹnoy nauky.
10. Sanytsʹkyy M. A. Vplyv khimichnykh dodatkiv na hidratatsiyu i tverdinnya budivelʹnoho hipsu. Visnyk DU “Lʹvivsʹka politekhnika”. Khimiya, tekhnolohiya rechovyn ta yikh zastosuvannya. 1997. No. 332. P. 240–242.
11. Sanytsʹkyy M. A., Fisher KH.-B., Soltysik R. A. Vplyv modyfikatoriv na morfolohiyu krystaliv ta vlastyvosti hipsovykh v'yazhuchykh. Visnyk DU “Lʹvivsʹka politekhnika”. Khimiya, tekhnolohiya rechovyn ta yikh zastosuvannya. 2000. No. 414. P. 61–64. [In Ukrainian].
12. Fischer H.-B., Novak S., Műller M. Alterung' von Calciumsulfaten. Internationale Baustoffatagung “IBAUSIL-16”. Band 1. Weimar: Bauhaus-Unsversitat (bundesrepublik). 2006. P. 717–731.
13. Bailey J., E. Stav Gypsum Phase Characterization Using Thermogravimetric Analysis. Internationale Baustoffatagung “IBAUSIL-16”. Band 1. Weimar: Bauhaus-Unsversitat (bundesrepublik). 2006. P. 733–736. 
14. Dvorkin L. Y., Skrypnyk I. H. Fizyko-khimichni i fizychni metody doslidzhennya budivelʹnykh materialiv. Rivne, 2006. 216 p. [In Ukrainian].

1. Escalante-Garcıa J. I., Rios-Escobar M., Gorokhovsky A., Fuentes A. F. Fluorgypsum binders with OPC and PFA additions, strength and reactivity as a function of component proportioning and temperature. Cement & Concrete Composites. 2008. No. 30. Р. 88–96.
2. Fraire-Luna P. E., Escalante-Garcia J. I., Gorokhovsky A.. Composite systems fluorgypsum–blastfurnance slag–metakaolin, strength and microstructures. Cement and Concrete Research. 2006. No. 36. Р. 1048–1055.
3. Arikan M., Sobolev K. The optimization of a gypsum-based composite material. Cement and Concrete Research, 2002. No. 32. Р. 1725–1728.
4. Yasniy P., Gomon S., Gomon P. On approximation of mechanical condition diagrams of coniferous and deciduous wood species on compression along the fibers. Scientific Journal of Ternopil National Technical University. 2020. Vol. 97. No. 1. P. 57–64.
5. Yasniy P., Gomon S. Timber with improved strength and deformable properties. Scientific Journal of Ternopil National Technical University. Ternopil: TNTU. 2020. Vol. 99. No. 3. P. 17–27.
6. Homon S., Vereshko O. Method of determination the initial elasticity modulus and timber deformation modulus under the influence of acid environment. Scientific Journal of Ternopil National Technical University. 2022. Vol. 105. No. 1. P. 29–39.
7. Keelly K. K., Southard J. C., Anderson C. T. Thermodinamic properties of gipsum and its dehidration products. Bureane of Miner: U.S. Cov. Print office W., 1941. 265 p.
8. Dvorkin L. Y., Dvorkin O. L., Myronenko A. V., Polishchuk-Herasymchuk T. O., Kundos M. H. Modyfikovani hipsovi i sulʹfatno-shlakovi v'yazhuchi ta materialy na yikh osnovi: monohrafiya. Rivne: NUVHP, 2011. 188 p. [In Ukrainian].
9. Dvorkin L. Y., Skrypnyk I. H., Zhytkovsʹkyy V. V., Polishchuk-Herasymchuk T. O. Osoblyvosti strukturoutvorennya hipsovoho kamenyu z dobavkamy. V Mezhdunarodnaya nauchno-praktycheskaya Ynternet-konferentsyya. Sostoyanye sovremennoy stroytelʹnoy nauky.
10. Sanytsʹkyy M. A. Vplyv khimichnykh dodatkiv na hidratatsiyu i tverdinnya budivelʹnoho hipsu. Visnyk DU “Lʹvivsʹka politekhnika”. Khimiya, tekhnolohiya rechovyn ta yikh zastosuvannya. 1997. No. 332. P. 240–242.
11. Sanytsʹkyy M. A., Fisher KH.-B., Soltysik R. A. Vplyv modyfikatoriv na morfolohiyu krystaliv ta vlastyvosti hipsovykh v'yazhuchykh. Visnyk DU “Lʹvivsʹka politekhnika”. Khimiya, tekhnolohiya rechovyn ta yikh zastosuvannya. 2000. No. 414. P. 61–64. [In Ukrainian].
12. Fischer H.-B., Novak S., Műller M. Alterung' von Calciumsulfaten. Internationale Baustoffatagung “IBAUSIL-16”. Band 1. Weimar: Bauhaus-Unsversitat (bundesrepublik). 2006. P. 717–731.
13. Bailey J., E. Stav Gypsum Phase Characterization Using Thermogravimetric Analysis. Internationale Baustoffatagung “IBAUSIL-16”. Band 1. Weimar: Bauhaus-Unsversitat (bundesrepublik). 2006. P. 733–736. 
14. Dvorkin L. Y., Skrypnyk I. H. Fizyko-khimichni i fizychni metody doslidzhennya budivelʹnykh materialiv. Rivne, 2006. 216 p. [In Ukrainian].