Bioinspired Building Envelop with Lightweight, Unltra Thermal Conductivity, High Energy Dissipation and Fire Resistance

Multiple hazards including impact load, heat damage and fire shock arising from extreme weathers usually bring life-threatening problems to residents. To prevent these threatens, expecially those caused by mechanical-thermal-fire coupled damage, urgently needs the construction of versatile preotective building materials. Herein, we develop an effectvie approach to engineer a bioinspired cement wood with a hierarchical structure through self-assembling cement in polymeric solution. This emerging cement wood demonstrates a unique combination of light weight, high stiffness, superior thermal insulation, remarkable energy dissipation and good fire resistance. When appied as building envelop, the prepared cement-based material can dissipate impact energy and block heat diffusion to block the spread of fire, therefore significantly reducing the risk of property damage or bodily injuries.