A　computational　model　used　to　explain　the　themlal　performance　of　construction　concretes　1,2） has　been　updated to　simulate　the　dewatering　of　refractory　concrete　walls．The　results　obtained　indicate　that　the　heat　transfer through　the　wall　is　mainly　due　to　a　conduction　mechanism，there　is　a　sharp　moving　drying　front （which　is　not　an assumption　of　the　initial　conditions）， and　that　the　most　important　material　property　is　pe㎜eability．The　high　pore pressure　developed　inside　the　reffactory　wall　is　linked　to　the　moving　drying　front．Moisture　clogging　is　observed which　might　require　modification　of　the　model　to　include　the　movement　of　liquid　water．The　accuracy　of　the modeling　is　highly　dependent　upon　using　the　correct　input　property　data，such　as　permeability，thermal conductivity，porosity，dehydration　characteristics，and　heat　and　mass　transfer　coefficients．

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