Method of detecting air gap in gypsum-based building board and method of manufacturing gypsum-based building board
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United States of America Patent
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Dec 26, 2017
Grant Date -
Sep 24, 2015
app pub date -
Jun 17, 2013
filing date -
Oct 18, 2012
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Abstract
A method of detecting an air gap in a gypsum-based building board includes cooling a surface of a gypsum-based building board that has generated heat because of a hydration reaction of calcined gypsum by applying a cooling medium to the surface, and detecting a temperature distribution of the surface of the gypsum-based building board after completion of the cooling.
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