Concrete Block Fill Calculator
This is Concrete Block Fill Calculator. You can also use it through our mobile application.
Considering everything, filling your cinder blocks isn’t exactly necessary, but it is completely safe, assuming you don’t add dirt to it.
Core fill is a mixture of sand and aggregate. It is used for filling block work such as masonry greys to provide stability and strength.
Concrete blocks are often made of 1:3:6 concrete with a maximum size aggregate of 10mm or a cement-sand mixture with a ratio of 1:7, 1:8, or 1:9.