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Fire-resistant mortar is obtained by the addition of ____________ to the powder of fire-bricks.

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Fire-resistant mortar is obtained by the addition of ____________ to the powder of fire-bricks.

(a) Silica

(b) Sodium silicate

(c) Aluminous cement

(d) Caustic soda

The question was posed to me in semester exam.

This intriguing question originated from Mortar topic in portion Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials

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The correct option is (c) Aluminous cement

Best explanation: Fire-resistant mortar is obtained by the addition of aluminous cement to the powder of fire-bricks. Because this mortar is fire resistant, it is used with fire bricks for lining furnaces, ovens, etc.

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