fireproof concrete

How Long Does It Take For Fire Cement To Harden?

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How Long Does It Take For Fire Cement To Harden? The general curing time for the fire cement is around 12 hours. It depends on a brand to brand, but the generally accepted curing time is 12 hours from the initial application around the cracks. Once you have applied the cement, let the water cookout,

How Do You Make Concrete Fire Resistant?

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How Do You Make Concrete Fire Resistant? Many wood-fired ovens, kilns and fireplaces are built with fireproof concrete or other fireproof material known as refractory concrete. Commercially, fireproof concrete is made by mixing a product known as fly ash, a by-product of the production of Portland cement. Can you use normal cement in a fireplace?