Introduction to the role of lithium carbonate in cement mortar
Keywords
Lithium carbonate, mortar, cement, concrete, accelerator
In cement-based building materials, lithium carbonate can be used as a coagulant for cement mortar. During the cement hydration process, a high alkalinity lithium hydroxide solution will be produced, and this alkaline solution can prevent the cement hydration process.
The role of lithium carbonate in mortar includes:
Promote cement hydration reaction, enhance the strength and hardness of mortar.
Reduces shrinkage of mortar, prevents cracking and cracking.
Improve the durability of mortar and increase its weathering resistance and freeze-thaw resistance.
Promote the bonding force between the mortar and the base layer, and improve the bonding strength and anti-stripping performance of the mortar.
Lithium carbonate is a white powder with the chemical formula Li2CO3. It is usually used as an admixture in cement production, which can improve the physical and chemical properties of cement.
The mechanism of action of lithium carbonate
Adjust the setting time and hardening speed of cement
Lithium carbonate can shorten the setting time of cement and accelerate the hardening speed of cement by adjusting the calcium silicate phase content in cement. At the same time, lithium carbonate can also improve the fluidity and fineness modulus of cement paste.
Enhances the strength and durability of concrete
The use of lithium carbonate can enhance the compressive strength, flexural strength, wear resistance and durability of concrete, and prolong the service life of concrete.
Adjust the alkalinity of concrete
Lithium carbonate can reduce the alkali stone content of concrete, reduce the alkali dissolution on the concrete surface, reduce the alkalinity of concrete, and reduce the alkali corrosion on the concrete surface.
