In high-grade concrete (C50 and above), because of the high content of water reducer and the near limit of water-reducing dispersion of admixtures, the ability of FJ-2 to replace the solid content of water reducer is weakened, and its dispersing performance is more manifested as reducing the viscosity of concrete.

It is an admixture that can significantly reduce the viscosity coefficient of concrete. By adding air entraining agent, water reducing agent and some mineral admixtures (fly ash as microspheres), concrete viscosity can be reduced. It only improves the viscosity of colloidal materials in the hydration process, and hardened substrates have no adverse effects. At the same time, it can reduce water and retain slump. When compounding, it can reduce the corresponding master batch and save cost. It can be used in high-grade concrete, low-grade concrete with more stone powder, mortar and grouting material.