Improving the Efficiency of Slag Portland Cement by Reducing Shrinkage Deformations

Abstract:

The influence of the artificial additive introduced at the joint grinding of granulated slag, Portland cement clinker and gypsum on the Portland slag cement hydration, its compression strength at an early stage and shrinkage deformation is investigated. It was found that in the presence of sulfoferrite clinker there is an amorphization of cement stone structure with formation of stone with high density and strength in early setting. The open porosity of the hardened paste is reduced by 13 – 15 % in comparison with plain Portland slag cement. The samples strength increases by 1.55 - 1.78 times at grade stage, by 15.5 - 19.4 % in bending and by 6.4 - 11.2 % in compression.

• Periodical: Materials Science Forum (Volume 992)
• Pages: 104-110
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.992.104
• Online since: May 2020
• Authors: Svetlana V. Samchenko, Dmitriy A. Zorin
• Keywords: Dispersion, Expansion of the Cement Stone, Portland Slag Cements, Shrinkage Deformation

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