What is the difference between autoclaved sand-lime brick and autoclaved aerated concrete block
The raw material of autoclaved lime-sand brick is mainly sand. Promoting autoclaved lime-sand brick to replace clay brick has a positive effect on reducing environmental pollution, protecting farmland and improving building functions. The performance of autoclaved lime-sand brick is analyzed and studied, the problems existing in the application of autoclaved lime-sand brick are discussed, and the technical measures that should be taken in design and construction are put forward. After autoclaved lime sand brick is discharged from the kettle, due to temperature and humidity reduction and carbonization, the general trend in the use process is volume shrinkage. The law of shrinkage change is as follows: the shrinkage is the largest in the first three days after the kettle is discharged, and the average daily shrinkage value is 0.019mm/m; The average daily shrinkage value for 3 to 30 days is 0.005mm/m; The average daily shrinkage value after 30 days is 0.003mm/m; After about 60 days, the average daily shrinkage value is less than 0.001 mm/m until it is stable.
Autoclaved lime sand brick is cured by pressing and steaming
Sand aerated concrete block is formed by pouring foam, cutting and steam curing
The former is used as load-bearing wall
The latter is used for filling materials and partition walls.
The bulk density of the latter is one third of that of the former