There is something don't understand about concrete block strength vs brick. Most of the blocks on sale are advertised as maximum 7.3 N/mm2 (occasionally I see 10 N/mm2 but rarely more). This goes for the dense, hard to handle blocks as much as medium density or even aerocrete. I am no expert but think that the number 7.3 comes from one of the standards or building regulations that would apply to low-rise construction.
However, on the other hand the compressive strength of bricks varies but is usually stated as 20, 30 or more. Setting aside whether 7.3 is good enough for anything up to 3 storeys using typical designs, how can blocks ever be considered stronger than or equivalent to brickwork, as many believe? Also, what are dense concrete blocks used for if medium or light weight should be just as good?
However, on the other hand the compressive strength of bricks varies but is usually stated as 20, 30 or more. Setting aside whether 7.3 is good enough for anything up to 3 storeys using typical designs, how can blocks ever be considered stronger than or equivalent to brickwork, as many believe? Also, what are dense concrete blocks used for if medium or light weight should be just as good?