The hydration of slag in complex binder and the microstructural variation of hardened paste under the condition of leaching of soft water

The hydration of slag in complex binder with different dosage was studied by identifying Ca(OH)2 content in hardened paste and Ca/Si ratio of formed C-A-S-H gel. The results shows that: elevated temperature curing could improve the slag’s reaction degree in early ages, but hinder the further hydration in late time. Some Ca(OH)2 is consumed when...

Fracture properties and microstructure formation of hardened alkali-activated slag/fly ash pastes

This study presents a comprehensive experimental investigation on the fracture properties of hardened alkali-activated slag/fly ash (AASF) pastes in relation to the microstructure formation and reaction product composition. The main reaction product in AASF is C-(N-)A-S-H gel along with minor hydrotalcite phase, with the polymerization of C-...