AbstractAbout AuthorsReferences
Water resistance of natural and artificial building materials is usually estimated by the softening coefficient. However, in the course of operation, materials, for example, for building enclosing structures, are rarely subjected to complete dewatering or water saturation. Therefore, one of the most important criteria for the durability of such products is their resistance to atmospheric influences (alternate wetting and drying resistance). In the present work, the possibility of increasing the alternate wetting and drying resistance of press-formed composites based on a modified gypsum binder is studied. We have developed a complex modifier of the gypsum binder and the structure of the resulting pressed composites, consisting of carbonate-containing slime of chemical water purification of thermoelectric power station and monoammonium phosphate. We studied the effect of the modifier on changes in the compressive strength of pressed composites in the dried and water-saturated state, softening and atmospheric durability coefficients, as well as linear deformations of control samples after a set number of cycles of alternating wetting and drying. We found that press-formed composites based on a modified gypsum binder are highly resistant to alternating wetting and drying. The complex modifier provides the formation of a more solid and monolithic structure of fine-crystalline calcium sulfate dihydrate, additionally reinforced with a hardly soluble phosphate-carbonate framework. The proposed method of modifying the gypsum binder prevents loosening of the structure of the press-formed stone-like material made from it under alternating stresses, reduces linear deformations and, as a result, slows down its fatigue failure. The technical characteristics of the obtained materials are sufficient for their use, in particular, in building enclosing structures.
A.V. KAKLYUGIN1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
L.I. KASTORNYKH1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
N.S. STUPEN2, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.V. KOVALENKO2, Senior lecturer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
L.I. KASTORNYKH1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
N.S. STUPEN2, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.V. KOVALENKO2, Senior lecturer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
1 Don State Technical University (162, Sotsialisticheskaya St., Rostov-on-Don, 344022, Russian Federation)
2 Brest State A.S. Pushkin University (21, Kosmonavtov bul., Brest, 224016, Belarus)
1. Getselev A.V. Products of high mechanical strength based on plaster. Promyshlennost’ stroitel’nykh materialov. 1946. No. 6, pp. 46–50. (In Russian).
2. Kryzhanovsky B.B., Levitina M.V., Smirnov N.V. Mastering the method of semi-dry pressing of gypsum building parts. Сollection of scientific works of ROSNIIMS. Moscow: Promstroyizdat, 1954. No. 6, pp. 189–208.
3. Volzhensky A.V., Rozhkova K.N. The structure and strength of the dihydrate formed during the hydration of semiaqueous gypsum. Stroitel’nye Materialy [Construction Materials]. 1972. No. 5, pp. 26–28. (In Russian).
4. Volzhensky A.V. Dependence of the strength of binders on their concentration in a hardening mixture with water. Stroitel’nye Materialy [Construction Materials]. 1974. No. 6, pp. 26–28. (In Russian).
5. Yundin A.N., Kaklyugin A.V., Akopdzhanov R.G. Increasing the strength and water resistance of pressed gypsum binder. Effective technologies and materials for wall and enclosing structures: Materials of the international scientific and practical conference (December 12–15, 1994). Rostov-on-Don: RSACE, 1994, pp. 87–92. (In Russian).
6. Kaklyugin A., Stupen N., Kastornykh L., Kovalenko V. Pressed composites based on gypsum and magnesia binders modified with secondary resources. Materials Science Forum. 2020. Vol. 1011, pp. 52–58. DOI: 10.4038/www.scientific.net/MSF.1011.52.
7. Kaklyugin A.V., Trishchenko I.V. The best available technologies in the production of building materials and products. Construction and architecture – 2017. Engineering and construction faculty: Materials of the scientific and practical conference. Rostov-on-Don: DSTU, 2017, pp. 185–191. (In Russian).
8. Trishchenko I.V., Kaklyugin A.V. Effectiveness of investments in the innovative directions of the construction materials industry. Izvestiya vuzov. Investisii. Stroitel’stvo. Nedvizhimost’. 2018. Vol. 8. No. 2, pp. 73–83. (In Russian). DOI: 10.21285/2227-2917-2018-2-73-83.1.
9. Korovyakov V.F. Gypsum binders and their use in construction. Rossiyskiy khimicheskiy zhurnal. 2003. Vol. XLVII. No. 4, pp. 18–25. (In Russian).
10. Volzhensky A.V., Stambulko V.I., Ferronskaya A.V. Gipsotsementnoputstsolanovyye vyazhushchiye, betony i izdeliya [Gypsum-cement-pozzolanic binders, concretes and products]. Moscow: Stroyizdat, 1971. 318 p.
11. Korovyakov V.F. Prospects for the production and use in construction of water-resistant gypsum binders and products. Stroitel’nye Materialy [Construction Materials]. 2008. No. 3, pp. 65–67. (In Russian).
12. Budnikov P.P. Gips, yego issledovaniye i primeneniye [Gypsum, its research and application]. Moscow: Stroyizdat, 1951. 418 p.
13. Rebinder P.A. Fiziko-khimicheskiye osnovy vodopronitsayemosti stroitel’nykh materialov [Physico-chemical basis for the water permeability of building materials]. Moscow: Gosstroyizdat, 1953. 184 p.
14. Kaklyugin A.V., Stupen N.S., Kastornykh L.I., Kovalen-ko V.V. Dependence of water resistance of moulded materials containing air-setting binders on effective porosity. Izvestiya vuzov. Investitsii. Stroitel’stvo. Nedvizhimost’. 2020. Vol. 10. No. 1, pp. 68–75. (In Russian). https://doi.org/10.21285/2227-2917-2020-1-68-75.
15. Ferronskaya A.V. Dolgovechnost’ gipsovykh materialov, izdeliy i konstruktsiy [Durability of gypsum materials, products and structures]. Moscow: Stroyizdat, 1984. 286 p.
16. Nevsky V.A. Ustalost’ i deformativnost’ betona [Fatigue and deformability of concrete]. Moscow: Vuzovskaya kniga, 2012. 264 p.
17. Patent RF No. 2078745 Syr’yevaya smes’ dlya izgotovleniya gipsovykh izdeliy i sposob yeye prigotovleniya. [Raw meal for manufacturing gypsum products and method of preparation thereof]. Kaklyugin A.V., Yundin A.N. 1997. (In Russian).
2. Kryzhanovsky B.B., Levitina M.V., Smirnov N.V. Mastering the method of semi-dry pressing of gypsum building parts. Сollection of scientific works of ROSNIIMS. Moscow: Promstroyizdat, 1954. No. 6, pp. 189–208.
3. Volzhensky A.V., Rozhkova K.N. The structure and strength of the dihydrate formed during the hydration of semiaqueous gypsum. Stroitel’nye Materialy [Construction Materials]. 1972. No. 5, pp. 26–28. (In Russian).
4. Volzhensky A.V. Dependence of the strength of binders on their concentration in a hardening mixture with water. Stroitel’nye Materialy [Construction Materials]. 1974. No. 6, pp. 26–28. (In Russian).
5. Yundin A.N., Kaklyugin A.V., Akopdzhanov R.G. Increasing the strength and water resistance of pressed gypsum binder. Effective technologies and materials for wall and enclosing structures: Materials of the international scientific and practical conference (December 12–15, 1994). Rostov-on-Don: RSACE, 1994, pp. 87–92. (In Russian).
6. Kaklyugin A., Stupen N., Kastornykh L., Kovalenko V. Pressed composites based on gypsum and magnesia binders modified with secondary resources. Materials Science Forum. 2020. Vol. 1011, pp. 52–58. DOI: 10.4038/www.scientific.net/MSF.1011.52.
7. Kaklyugin A.V., Trishchenko I.V. The best available technologies in the production of building materials and products. Construction and architecture – 2017. Engineering and construction faculty: Materials of the scientific and practical conference. Rostov-on-Don: DSTU, 2017, pp. 185–191. (In Russian).
8. Trishchenko I.V., Kaklyugin A.V. Effectiveness of investments in the innovative directions of the construction materials industry. Izvestiya vuzov. Investisii. Stroitel’stvo. Nedvizhimost’. 2018. Vol. 8. No. 2, pp. 73–83. (In Russian). DOI: 10.21285/2227-2917-2018-2-73-83.1.
9. Korovyakov V.F. Gypsum binders and their use in construction. Rossiyskiy khimicheskiy zhurnal. 2003. Vol. XLVII. No. 4, pp. 18–25. (In Russian).
10. Volzhensky A.V., Stambulko V.I., Ferronskaya A.V. Gipsotsementnoputstsolanovyye vyazhushchiye, betony i izdeliya [Gypsum-cement-pozzolanic binders, concretes and products]. Moscow: Stroyizdat, 1971. 318 p.
11. Korovyakov V.F. Prospects for the production and use in construction of water-resistant gypsum binders and products. Stroitel’nye Materialy [Construction Materials]. 2008. No. 3, pp. 65–67. (In Russian).
12. Budnikov P.P. Gips, yego issledovaniye i primeneniye [Gypsum, its research and application]. Moscow: Stroyizdat, 1951. 418 p.
13. Rebinder P.A. Fiziko-khimicheskiye osnovy vodopronitsayemosti stroitel’nykh materialov [Physico-chemical basis for the water permeability of building materials]. Moscow: Gosstroyizdat, 1953. 184 p.
14. Kaklyugin A.V., Stupen N.S., Kastornykh L.I., Kovalen-ko V.V. Dependence of water resistance of moulded materials containing air-setting binders on effective porosity. Izvestiya vuzov. Investitsii. Stroitel’stvo. Nedvizhimost’. 2020. Vol. 10. No. 1, pp. 68–75. (In Russian). https://doi.org/10.21285/2227-2917-2020-1-68-75.
15. Ferronskaya A.V. Dolgovechnost’ gipsovykh materialov, izdeliy i konstruktsiy [Durability of gypsum materials, products and structures]. Moscow: Stroyizdat, 1984. 286 p.
16. Nevsky V.A. Ustalost’ i deformativnost’ betona [Fatigue and deformability of concrete]. Moscow: Vuzovskaya kniga, 2012. 264 p.
17. Patent RF No. 2078745 Syr’yevaya smes’ dlya izgotovleniya gipsovykh izdeliy i sposob yeye prigotovleniya. [Raw meal for manufacturing gypsum products and method of preparation thereof]. Kaklyugin A.V., Yundin A.N. 1997. (In Russian).
For citation: Kaklyugin A.V., Kastornykh L.I., Stupen N.S., Kovalenko V.V. Press-formed composites with alternate wetting and drying resistance based on modified gypsum binder. Stroitel’nye Materialy [Construction Materials]. 2020. No. 12, pp. 40–46. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2020-787-12-40-46