Principles of Producing Cement Blocks
Cement blocks or concrete blocks can produce by differently aggregates but cement is the main aggregate in producing cement blocks, other materials used in with cement are pumice, perlite, sand and leca, sand is an old aggregate to produce cement blocks but using sand in cement blocks makes them heavy and it isn't suitable for buildings because of heavy structure has many problems specially in earthquakes so recently in block making factories or workshops they use other aggregates as mentioned above to decrease the weight of the blocks up to 50 percent and these blocks called lightweight blocks.
Cement Blocks Standards?!
Cement Blocks Mixing Plan?!