To provide a thermally-expandable refractory sheet or the like that shows improved fire resistance in the state of being fitted into a narrow gap of a building, and allows for increased efficiency of work when fitted into the narrow gap.SOLUTION: The inventive thermally-expandable refractory sheet comprises a thermally-expandable refractory composition comprising a matrix component and thermally-expandable graphite. The thermally-expandable refractory sheet has a thermal expansion ratio in the thickness direction to be higher than that in the width direction.SELECTED DRAWING: None
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