Author(s)

Alexey Brykov, Mikhail Voronkov

Department of Chemical Technology of High-Melting Non-Metallic and Silicate Materials, Saint Petersburg State Institute of Technology, St. Petersburg, Russia.

This work investigates durability of cement-free mortars with a binder comprised of ground granulated blast furnace slag (GGBFS) activated by high-calcium fly ash (HCFA) and sodium carbonate (Na₂CO₃): the soundness, sulfate resistance, alkali-silica reactivity and efflorescence factors are considered. Results of tests show that such mortars are resistant to alkali-silica expansion. Mortars are also sulfate-resistant when the amount of HCFA in the complex binder is within a limit of 10 wt%. The fineness of fly ash determines its’ ability to activate GGBFS hydration, and influence soundness of the binder, early strength development, sulfate resistance and efflorescence behavior. The present article is a continuation of authors’ work, previously published in MSA, Vol. 14, 240-254.

Ground Granulated Blast-Furnace Slag, High-Calcium Fly-Ash, Sodium Car-bonate, Blast-Furnace Slag Binder, Durability, ASR, Sulfate Attack, Soundness, Efflorescence

Brykov, A. and Voronkov, M. (2024) Dry Mix Slag—High-Calcium Fly Ash Binder. Part Two: Durability. Materials Sciences and Applications, 15, 37-51. doi: 10.4236/msa.2024.153004.