As a new type of early strength agent, calcium formate has dual functions of accelerating coagulation and early strength. It can not only accelerate the hardening speed of cement and improve the early strength, but also avoid the too slow setting speed in winter construction or in low temperature and humid environment, so that cement products can be put into use with high strength as soon as possible. * * contributes greatly to the early strength, but has no damage to the final strength.。

Adding proper amount of calcium formate to portland cement-based materials can promote the hydration speed of calcium silicate, accelerate the precipitation of calcium hydroxide and the decomposition of calcium silicate; Promote the formation of hydrated calcium silicate gel, thereby improving the hardening strength of cement mortar and shortening the setting time.。

Calcium formate is moisture-absorbing, slightly bitter, neutral and toxic. It is soluble in water, but the solubility of calcium formate does not change much with the increase of temperature. The aqueous solution is neutral.。