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The role of Gypsum in Portlandite Stone Structure Formation

Yaroslaw Yakymechko and Bogdan Chekansky
Affiliation: 
Lviv Polytechnic National University 12 S. Bandera St., 79013 Lviv, Ukraine
DOI: 
https://doi.org/10.23939/chcht11.01.093
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Keywords:

Abstract: 
The hydration of calcium oxide has been examined in the presence of SO42-. The conditions, under which portlandite stone with the best physico-mechanical properties was formed, have been determined. The hardening conditions affect the phase composition and microstructure of portlandite stone with a bihydrated gypsum. The mechanism of CaO hardening has been determined in the presence of SO42- ions
References: 

[1] Garrault S., Finot E., Lesniewska E. and Nonat A.: Mater. Struct., 2005, 38, 435.
https://doi.org/10.1617/14343

[2] Barnes P. and Bensted J. (Eds.): Structure and Performance of Cements, 2nd edn. Spon Press, London-NY 2002.

[3] Sanytskyi M.: Nauk. Visnyk Budivnytstva, 2007, 42, 179.

[4] Shpynova L., Chih V., Sanytskyi M. et al.: Fiziko-Khimichiskie Osnovy Formirovania Cementnogo Kamnia. Lvov 1981.

[5] Babushkin V.: Cement i Ego Primenenie, 1998, 5-6, 50.

[6] Pashchenko A.: Teoria Cementa. Kiev 1991.

[7] Ghosh S.: Advances in Cement Technology: Chemistry, Manufacture and Testing. CRC Press, 2003.

[8] Kurdowski W.: Infrastruktura Transportu, 2011, 4, 88.

[9] Peukert S.: Cementy powszechnego użytku i specjalne. Kraków 2000.

[10] Sersale R., Cioffi R. and Frigione G.: Cement Concrete Res., 1991, 21, 120.
https://doi.org/10.1016/0008-8846(91)90038-J