Portland cement
It is best to use 32.5 cement for wall and powder wall, because the price is cheap. It is best to use 42.5 ordinary portland cement for pouring columns, beams and slabs, because the strength of concrete mixed with 42.5 cement is relatively high.
Cementitious material
As an important cementing material, cement is widely used in civil construction, water conservancy, national defense and other projects.