Sulapha Peethamparan

TL;DR: In this paper, the effects of nano-silica (NS) on setting time and early strengths of high volume slag mortar and concrete have been experimentally studied, and the results indicate that the incorporation of a small amount of NS reduced setting times, and increased 3-and 7-day compressive strength of high-volume slag concrete, significantly.

TL;DR: In this paper, a broad experimental study has been performed to characterize the early hydration and setting of cement pastes prepared with Class H oil well cement at water-to-cement ratios (w/c) from 0.25 to 0.40, cured at temperatures from 10 to 60°C, and mixed with chemical additives.

TL;DR: In this article, the early age reaction kinetics and microstructural development in alkali-activated slag binder are discussed, and in-situ isothermal calorimetric data for sodium hydroxide-activated systems exhibited only one major heat evolution peak with no dormant period.

TL;DR: In this paper, the influence of the concentration of the activating agent (4, 6, or 8 m sodium hydroxide solution), and activator-to-binder ratio (0.40, 0.50, or 0.60) on compressive strength, pore structure features, and microstructure of concretes containing Class F fly ash or ground granulated blast furnace slag (GGBFS) as the sole binder is reported.

TL;DR: In this article, the tensile strength, modulus of elasticity, Poisson's ratio, and stress-strain relationships of alkali-activated portland-cement-free concrete made with fly ash or ground granulated blast furnace slag (GGBFS) as the sole binder were investigated.