Aerated block manufacturers consider changing mixing process is accelerated hydration of cementitious materials provide strength aerated block method can be called stir strengthened. Overall, the enhanced methods are homogeneous enhancement , strengthening and heat strengthened crushed . Details are as follows :
1 , homogeneous enhancement . Ordinary blender full use of gravity , shear, convection can be aerated block homogeneity of the mixture reaches the macro , but still can not use the small particles uniformly mixed with the mixing water . To further enhance the mixing quality must also be homogeneous enhancement .
2 crushed strengthened. In the mixing process , the cement particles are further pulverized to increase the specific surface area , the surface of new grinding surface having a high activation energy reactions which increase the cement water , to further improve the strength of the block .
3 , heat strengthening. Reasonable increase in material temperature with stirring , to eliminate the damaging effects of heat during curing temperature caused by the block structure , but also accelerate the corrosion of cement hydration , so that the block is improved early strength to shorten curing cycle. Through trial found along the following rule: If fly ash aerated block with hot water mixing, can accelerate the hydration reaction , of course , the temperature must be controlled properly , the temperature is too high , it will condense too fast , causing the hair does not blister , bulk density is too big disadvantage , so in grinding ash aerated block , often in order to grasp the material level to control the temperature of the chemical reaction rate.