The study looked at how well a special type of cement mortar sticks to a material called flue gas desulfurization gypsum over time. The researchers found that the bonding strength between the two materials can reach up to 3.0MPa, and that this bond is strong and long-lasting. This suggests that using this cement mortar could be a good way to make sure flue gas desulfurization gypsum stays securely attached in construction projects.