Low Cement High Alumina Castable

Low Cement refractory castable has the characteristics of rapid setting, high early strength, frost resistant, sulfate resistance, high temperature proof. It is suitable for the construction of frost and sulfate corrosion resistance and high temperature proof, and making fireproof concrete, refractory brick, manmade marble bricks, drymix motar materials, etc. 

Specification: 

1, Initial Setting Time: 30min Min 

2, Final Setting time: 6 hours Max

3, Compressive Strength(Min): 40MPa(1day), 50MPa(3day)

4, Breaking Strength(Min): 5.5MPa(1day), 6.5MPa(3day); 

5, Chemical Items: Al2O3 50%Min, Fe2O3 2.5%Max, SiO2 8.0%Max, CaO 35%Max