EXAMIANS
Cold crushing strength of ordinary fireclay brick is about 950 kg/cm² . On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm² .
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Spray test determines the __________ of refractories.
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Insulating refractories should have
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High porosity refractory bricks have
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Refractories are dried in the
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Porosity is induced in insulating refractories by adding
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Chromite refractories are used in
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Basic bricks are not made of
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Zirconia refractories are not used in
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Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks.
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