Scientists Develop Innovative Energy-Saving Cement To Lower Indoor Temperatures By 5 Degrees Celsius

Researchers from China and the US have introduced a new cement type aimed at reducing heat in buildings. This photon-structured cement can lower indoor temperatures by approximately 5 degrees Celsius on hot days, according to findings published in Science Advances. The material's unique properties help maintain cooler interiors even during extreme heat.

When this cement hardens, it forms a crystal-like surface structure similar to the mineral ettringite. This structure reflects visible light effectively while allowing most mid-infrared radiation to pass through. As a result, it helps keep building interiors cooler compared to traditional cement.

Traditional cement reflects only about 30% of sunlight and heat, which increases building temperatures significantly in hot regions. In contrast, photon-structured cement addresses this issue by reflecting more sunlight and reducing heat absorption. This innovation could be particularly beneficial in tropical areas.

The research was led by Professor Miao Chanven from Southeast University in China, with collaboration from American experts. Their work highlights the potential of this new material to improve energy efficiency and environmental sustainability in construction.

To evaluate its effectiveness, researchers constructed small house models using both conventional and photon-structured cement. Under sunlight exposure, walls made with traditional cement reached temperatures of 60–70 degrees Celsius. Meanwhile, those using the new material stayed between 30–35 degrees Celsius.

This significant temperature difference demonstrates the potential for photon-structured cement to reduce cooling costs in buildings. It offers a promising solution for cities worldwide where managing heat is crucial for comfort and energy savings.

Global Implications

The technology not only benefits hot and tropical regions but also has global applications. By lowering indoor temperatures, it can contribute to more comfortable living spaces and reduced energy consumption for cooling systems.

The researchers believe that this innovative cement could play a vital role in combating climate change by decreasing reliance on air conditioning systems. Its application could lead to substantial energy savings and improved sustainability in urban environments.

This advancement represents a step forward in creating more energy-efficient buildings that are better equipped to handle rising global temperatures. The potential impact on both residential and commercial structures is significant, offering a practical approach to addressing climate-related challenges.

With inputs from WAM