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What does fly ash brick making machine can produce(2)


Lasting quality of fly ash brick making machine

1. Frost resistance and water resistance

Frost resistance and water resistance are two major indicators reacting the durability of the fly ash aerated concrete bricks, especially frost resistance. Frost resistance is freezing 5 hours of the sample below zero 15 ~ 20 ℃, melting 3 hours in the water between 10 to 20 ℃, measured by the strength loss and damage after 15 times freeze-thaw cycle like this.

Because fly ash brick making machine mainly use fly ash as materials, observed by scanning electron microscope, fly ash particles is a lillte thick, having more space slag particles and glass ball, so the water uptaking rate is slower, in general, it need  24 hours to reach saturated conditions.

the bibulous rate of thefly ash concrete bricks generally within 8.26 ~ 14.0%, and slightly lower than clay brick (14.29 ~ 16.7%), soaking in the water for a long time, the strength will continue to rise. after 15 times freeze-thaw cycle, the appearance is essential complete, compressive strength reached to 8~16 Mpa, dry quality loss less than 2.0%, its freeze resistance and water resistance is good.

2. Dry-wet circulation

Dry-wet circulation, is soaking thefly ash brick making machine in the water to the preset-time, and then put it into drying oven to dry, and then put it into water…..after 15 times dry-wet cycle, strength has improved than before.

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