Innovative material aims to lower building temperatures and energy use
Scientists from China and the United States have developed a new type of cement that can reduce indoor temperatures and save energy in buildings. This energy-efficient cement, called photon-structured cement, is designed to help tackle urban heat and improve sustainable construction.
The study published in the journal Science Advances shows that this cement can lower indoor temperatures by around 5°C on hot days. The material forms a crystal-like structure similar to the natural mineral ettringite when it hardens. This unique structure reflects visible sunlight while letting mid-infrared radiation pass through, keeping buildings cooler even during extreme heat.
Unlike traditional cement, which reflects only about 30% of sunlight and heat, walls built with photon-structured cement stayed at 30–35°C, compared to 60–70°C for conventional cement under peak heat conditions. This significant temperature drop reduces the need for air conditioning, lowering energy costs and minimizing carbon emissions.
The introduction of this heat-reducing cement marks a major step in sustainable building practices. Using such materials can increase energy efficiency in cities, help reduce urban heat, and support environmental sustainability. Widespread adoption of photon-structured cement could play a key role in combating climate change and managing the effects of urbanization.
