2. Cellular Blocks- volume of cavities which should not pass
through the block between 25% to 50%.This is a highly thermally
insulating concrete-based material used for both internal and
external construction.
3. Solid Blocks certain block have non-standard block heights.
Minimum volume of solid material is 75%
4. Special Blocks- A block meant for special applications such
as corner, joints.
5. Cement blocks manufactured in Sri Lanka are almost entirely
of the hollow type. According to application requirements of
blocks, it should be classified as follows. Load bearing Non load
bearing
6. Preparing raw materials(cemen t aggregates) Mixing to
correct propotions Adjusting the proper consistancy of mix Placing
into moulds Compacting (ramming/vibration ) curing Add water
