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what is the fly ash and stone crusher bricks in madagascar

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what is the fly ash and stone crusher bricks in madagascar

Fly ash brick Wikipedia Fly ash brick FAB is a building material specifically masonry units containing class C or class F fly ash and water Compressed at 28 MPa 272 atm and cured for 24 hours in a 66 °C steam bath then toughened with an air entrainment agent the bricks last for more than 100 freezethaw cycles

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