A method for the production of pores concrete insulating plates

摘要

A method for the production of pores concrete insulating plates having a bulk density less than 120 kg / m³, said method comprising the steps of:a) preparing a mixture of quartz powder, cement, lime, aluminum as a pore former, return sludge with water premixed not yet hardened aerated concrete - returns and hardened returns flour in the form of aggregates ground foam concrete for the stabilization of the swollen mixture, as well as further additives and water,b) introducing the mixture in a mold,c) can be inflation - and stiffening of the mixture to form a raw ingot with sufficient green strength,d) from the mold removal of the ingot,e) cutting edges of the ingot into individual insulating boards andf) hardening of the insulating boards in an autoclave,g) wherein the return sludge and / or the cured returns flour added to the mixture with a water repellent be offset.