Effect of curing temperature on hydration properties of waste glass powder in cement-based materials

The effect of curing temperature on the hydration properties of waste glass powder (GP) in cement-based materials was studied by using X-ray diffraction, thermo gravimetric and differential thermal analysis, and scanning electron microscopy techniques. The compressive strength was also tested. Test results indicate that high curing temperature is effective in promoting the pozzolanic reaction of GP, which contributes to improve the mechanical and microstructure performance. Besides, pozzolanic reaction is found around the unhydrated GP particle and formed C-S-H gel instead of ASR. This research can provide a new approach of improving the reaction activity of GP and lay a theoretical basis for the application of GP in precast concrete products, mass concrete or concrete construction during hot season.