Combined Influence of Opoka and Slag on Cement Properties in Presence of Superplasticizer

Abstract:

The influence of the milled opoka of Penza field and blast-furnace slag with the polycarboxylate superplasticizer present on the properties of mortar component of the concrete based on blended cement, including Portland cement, fly ash, blast-furnace slag, silica fume, and microquartz has been investigated. Some equations for the dependency of water requirement of the cement mortar component, as well as of its strength with various values of time on proportion of superplasticizer and components of blended binder have been developed. It has been shown that the introduction of opoka increases the water requirement of the mix, insignificantly decreasing the strength, when proportioned up to 15%. The detrimental effect of opoka on the strength considerably reduces with higher superplasticizer content and lower water-to-cement ratio.

• Periodical: Solid State Phenomena (Volume 265)
• Pages: 337-341
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.265.337
• Online since: September 2017
• Authors: M.O. Korovkin, N.A. Eroshkina*
• Keywords: Blast Furnace Slag, Blended Cement, Fly Ash, Mix Flow, Opoka, Strength, Superplasticizer, Water Requirement

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