This　study　prepares　volcanic　ash　(VA)-blast　furnace　slag　(S)　based　alkali-activated　materials　(AAM)　with　the　addition　of　ceramic　waste　for　exposure　to　high　temperatures　(1000　°C).　The　temperature　resistance　of　alkali-activated　materials　were　described　by　measuring　their　surface　morphology,　gel　structure　and　thermal　damage　degree,　through　NMR　and　UPV　tests.　At　calcination　temperature　of　800　°C,　the　VA-based　alkali-activated　materials　with　ceramic　waste　shows　ultrasonic　velocity　of　1962　m/s　and　a　porosity　of　17.30　%,　indicating　the　prevention　from　gel　structural　collapse.　As　low　calcination　temperatures　(≤600　°C),　ceramic　waste　only　functions　as　filler　materials　and　reduces　compressive　strength　of　the　alkali-activated　materials.　While　at　calcination　temperature　of　800　°C,　there　is　an　activity　generated　by　the　transformation　of　crystalline　phases　into　amorphous　phases　in　the　ceramic　waste,　thus　participates　the　alkali-activated　reaction　and　increases　compressive　strength　of　the　alkali-activated　materials.　At　1000　°C,　the　collapse　of　skeleton　of　the　alkali-activated　material　is　induced　by　thermal　incompatibility　of　the　matrix　and　thermal　compression.　©　2023