This　study　aims　to　carry　out　a　high-temperature　exposure　assessment　for　graphene　oxide　(GO)　reinforced　cement　in　terms　of　weight　loss,　flexural　strength,　and　compressive　strength.　Different　additive　amounts　of　GO　in　cement　are　experimentally　studied　to　unfold　its　effect　on　enhancing　the　mechanical　performance　of　prepared　GO　reinforced　cement.　Temperatures　are　chosen　as　room　temperature,　200,　400,　600,　and　800°C,　corresponding　to　different　reaction　status　of　cement.　It　is　found　that　as　the　temperature　increases,　the　water　evaporates　from　the　GO　reinforced　cement.　Evaporated　quantity　of　water　relies　on　the　reaction　status,　and　the　relation　between　weight　loss　and　temperature　is　provided.　Benefiting　from　the　bonding　effects　of　GO,　hydrated　calcium　silicate　hydrate　(C–S–H)　is　chemically　produced　and,　thus,　a　reticular　bridging　system,　which　is　greatly　helpful　to　enhance　the　flexural　strength,　is　formed.　Unlike　flexural　strength,　adding　GO　into　cement　statistically　has　little　effect　on　the　compressive　strength,　except　when　the　temperature　rises　up　to　800°C　due　to　the　occurrence　of　decarburization　from　dehydration.　Copyright　©　2022　Yan,　Wang,　Chen　and　Xiang.