The authors give a full analysis of the causes of shrinkage deformations of cement stone in concrete. It is shown that the total amount of shrinkage deformations is composed of moisture and carbonation shrinkage, which is the result of carbon dioxide corrosion of cement stone. A method of forced carbonization is proposed to determine the value of carbonization shrinkage, it is shown that in the presence of carbonate additives Portland cement decreases the scale of carbonization shrinkage of cement stone. According to the authors, the cause of carbonation shrinkage during the service of cement stone are chemical reactions occurring during carbon dioxide corrosion and accompanied by the transfer of part of the chemically bound water to the free state.
shrinkage deformation, carbonization shrinkage, carbon dioxide corrosion, carbonate additives, Portland cement, durability
1. Aleksandrovskiy S.V. Eksperimental'no-teoreticheskie issledovaniya usadochnyh napryazheniy v betone. M.: Stroyizdat, 1965. - 285 s.
2. Bazhenov Yu.M., Dem'yanova V.S., Kalashnikov V.I. Modificirovannye vysokokachestvennye betony / nauchnoe izdanie. - M.: Izdatel'stvo associacii vuzov, 2006. - 368 s.
3. Kuznecova T.V. Modificirovannyy portlandcement svoystva i primenenie / T. V. Kuznecova, D. Ya. Frenkel', Yu. R. Krivoborodov // Populyarnoe betonovedenie / Nauch.-popul. zhurnal o betonnyh tehnologiyah v proizvodstve i stroitel'stve. - SPb.: Stroy-Beton. - 2007. - N5. - C. 31-34.
4. Sheykin A.E., Chehovskiy Yu.V., Brusser M.I. Struktura i svoystva cementnyh betonov. - M.: Stroyizdat, 1979. - 344 s.
5. Teoriya cementa / pod red. A.A. Paschenko. - K.: Budivel'nik, 1991. - 168s.
6. Sidorov V.I., Agasyan E.P., Nikiforova T.P. i dr. Himiya v stroitel'stve / Uchebnik dlya vuzov: - M.: AVS, 2007 - 312 s.
7. Kuropyatnikov Yu.Yu., Belov V.V. Vliyanie karbonatnyh modifikatorov na fiziko-mehanicheskie svoystva gazobetona: Sb. trudov «Integraciya, partnerstvo i innovacii v stroitel'noy nauke i obrazovanii». - M.: MGSU, 2011.
8. Malova E.Yu. Kompozicionnye portlandcementy s karbonatsoderzhaschimi dobavkami i betony na ih osnove: disser …….. kand. tehn. nauk. Tomsk, 2015.
9. Samchenko S.V., Makarov E.M. Karbonizaciya gidratnyh sostavlyayuschih portlandcementa, alyuminatnogo i sul'foalyuminatnogo cementov. Tehnika i tehnologiya silikatov. M. - 2013. - №3. - S.27-29.
10. Samchenko S.V. Formirovanie i genezis struktury cementnogo kamnya [Elektronnyy resurs] : monografiya / S.V.Samchenko; M-vo obrazovaniya i nauki Ros. Federacii, Nac issledovaniya. Mos. Gos. Stroit. Un-t. - Elektron. dan. i progr. (14Mb), - Moskva : NIU MGSU, 2016. (Biblioteka nauchnyh razrabotok i proektov NIU MGSU), - Rezhim dostupa: http//www.iprbookshop.ru/.
11. Timashev V.V., Kolbasov V.M. Svoystva cementov s karbonatnymi dobavkami. Cement. - 1989. - №10. - S.10-12.
12. Svit T.F., Semin D.S. Ob izmenenii sostava produktov gidratacii cementa pri deystvii uglekislogo gaza. Polzunovskiy vestnik. Barnaul. - 2006. - №2-2. - S.220.
