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How much time period is fly ash stone powder cement bricks water cured?

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How much time period is fly ash stone powder cement bricks water cured?

(a) A week

(b) 2 weeks

(c) 3 weeks

(d) 1 month

The question was asked in an online quiz.

My question is from Ash and its Effects on Boiler Operation and Performance in portion Steam Generators & Accessories of Energy Engineering

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Correct option is (d) 1 month

The explanation: Fly ash stone powder cement bricks are manufactured by mixing weighted fly ash, cement and stone powder in a mixture and molded and pressed in brick making machine. The compacted bricks are water cure for a month. The compressive strength of these bricks varies from 70 to 110 bar depending upon cement content.

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