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The effects of seawater on the hydration, microstructure and strength development of Portland cement pastes incorporating colloidal silica

This contribution investigates the effects of seawater and colloidal silica (NS) in the amounts of 1, 3 and 5 wt%, respectively, on the hydration, strength development and microstructural properties of Portland cement pastes. The data reveal that seawater has an accelerating effect on cement hydration and thus a significant contribution to early strength development was observed...

The Effects of Anisotropic Insulations with Different Spatial Distributions on Material Properties of Mortar Specimens

Sang-Yeop Chung Mohamed Abd Elrahman Dietmar Stephan Insulating concrete is a material designed to reduce heat conduction with pores/insulations, and these pores strongly affect the material

Effect of slag chemistry on the hydration of alkali-activated blast-furnace slag

This paper presents results of detailed investigations about the alkaline activation of ground granulated blast furnace slags whose chemical composition were modified. Sodium hydroxide and potassium silicates were used as alkaline activators. The influence of the CaO/SiO2 ratio, the Al2O3 and TiO2 content of the slag composition on the hydration reaction was analyzed utilizing...