Energy-efficient Material Development

Next-Gen Smart Materials for Green Concrete   The growing urgency to reduce carbon emissions, improve material efficiency and address material scarcity in the construction industry calls for a transformative approach to concrete technology.    The high carbon footprint of the commonly-used Portland cement creates a fundamental conflict with the global push for sustainable, low-carbon infrastructure. Consequently, building the resilient infrastructure of tomorrow requires a systemic transformation of materials science, guided by the principles of the Circular Economy.  Our research at RMIT University focuses on key strategies aimed at reducing carbon emissions. These include: • Utilisation of Greener Construction Materials – promoting the adoption of low-carbon alternatives through optimising the cost and creating the supporting evidence base. • Development of a new CO₂-efficient Cement Binder – designing innovative binders that significantly lower emissions during production. • Innovation in Engineered Concrete – enhancing the performance and sustainability of concrete through advanced materials engineering and modelling. Collectively, these approaches represent a significant step toward decarbonising the sector and supporting a sustainable built environment. The research activities are structured around key themes: Activated Clay Concrete, Upcycled Waste Integration in Concrete through nanoscience-based technologies, Geopolymer & Alkali-Activated Binder Systems, and Carbon sequestration & Advanced Material Modelling. A strong emphasis is placed on real-world applicability, with our research efforts aligned towards practical commercial implementation, in collaboration with our partners in industry. Our partnerships span across both Australian and international construction sectors, ensuring that innovations are both globally relevant and locally impactful. This collaborative approach enhances the translational potential of the research outcomes, paving the way for adoption of sustainable materials in mainstream construction practices. Over the past five years, our research team at RMIT has established strong collaborations with both industry and government at a national and international scale, attracting a variety of investment, and directly facilitating the translation of laboratory findings into real-world practice. Through these strategic partnerships, we are advancing large-scale trials, developing guidelines for alternative binder systems, and identifying strategies to ensure reliability and quality control in sustainable concrete production. Looking ahead, our work focuses to build the scientific foundation for the next generation of green concrete. By integrating waste valorisation, resource efficiency, and performance optimization, we aim to create materials that support the net-zero transition set by Australia and globally.  Interested in collaborating?  https://lnkd.in/dXAeEAuJ

A team of Chinese scientists from Zhejiang University, led by Guangming Tao and Yaoguang Ma, has developed an innovative fabric called metafabric that cools itself in sunlight without using any electricity. This breakthrough textile is made from polylactic acid fibers coated with titanium dioxide nanoparticles, allowing it to reflect over 92% of sunlight-including ultraviolet, visible, and near-infrared light-while also emitting heat through mid-infrared radiation. The result is a fabric that stays significantly cooler than traditional materials like cotton, by 5 to 10°C when worn, and even up to 30°C when used to cover objects like cars. Tested under real-world conditions, metafabric proved lightweight, breathable, durable, and scalable for mass production. This passive cooling technology holds great promise for use in clothing, outdoor gear, and building materials, especially in hot climates where reducing dependence on air conditioning could also help cut energy use and carbon emissions. The findings were published in the peer-reviewed journal Science, confirming the scientific credibility of the work.

A team of researchers from Southeast University in China, led by Professor Zhou Yang, has created a thermoelectric cement technology that turns heat into usable green energy. This advanced building material, made by mixing regular cement with hydrogel, mimics the layered structure of plant-based systems to efficiently generate electricity from temperature changes. What makes this innovation groundbreaking is its performance: with a Seebeck coefficient of −40.5 mV/K and a ZT value of 6.6×10⁻², it far surpasses other smart construction materials. It’s a major step toward carbon-neutral infrastructure. Imagine roads, buildings, and sidewalks generating their own renewable power — especially in hot climates. This could reduce electricity bills, lower carbon emissions, and create future-ready smart cities. This smart cement is more than just a material — it’s the foundation of a cleaner, sustainable energy future. #GreenTech #SmartCities #CleanEnergy #SustainableLiving #FutureOfConstruction

Chinese scientists have developed a remarkable cooling film that can reduce temperatures by up to 15°C without using electricity. This innovation relies on advanced materials that reflect sunlight and emit heat as infrared radiation, sending it directly into space. Unlike air conditioners or fans, the film doesn’t consume power—making it sustainable and low-cost. The transparent film can be applied to rooftops, windows, or outdoor equipment. When tested, it kept surfaces dramatically cooler than surrounding air, even under direct sunlight. This breakthrough could help reduce energy consumption in cities where air conditioning drives electricity demand during hot summers. Beyond comfort, the technology could play a major role in combating climate change. Cooling buildings without electricity reduces greenhouse gas emissions, while also cutting costs for households and businesses. Farmers may also benefit, as the film can protect crops and food storage facilities from overheating. By using the natural laws of thermodynamics, this film demonstrates how science can provide elegant, eco-friendly solutions. It’s a glimpse of how the future of cooling may shift from high-energy machines to passive, sustainable materials. #CoolTech #ClimateInnovation #GreenScience #SmartMaterials #EcoFuture

Scientists at Northwestern University have developed a breakthrough building material that could redefine sustainable construction—using seawater, electricity, and CO₂ to create carbon-negative concrete, cement, and plaster. This innovation turns atmospheric CO₂ into sand-like minerals, offering a scalable alternative to traditional aggregates. Not only does it reduce emissions, but it also generates clean hydrogen fuel—unlocking a powerful synergy for green infrastructure. This has key applications in the UAE and aligns with national goals: decarbonising the construction sector, conserving natural resources, and scaling green hydrogen production. With vast coastlines, advanced infrastructure, and an innovation-driven vision, the UAE is ideally positioned to lead the regional adoption of such solutions. As the cement and concrete industry faces increasing pressure to cut emissions, technologies like this can turn buildings into carbon sinks—offering both climate impact and commercial potential.

Concrete has an eight percent global carbon problem. This tries to flip it. Researchers in the US have developed an enzyme-based building material that captures carbon dioxide and turns it into a solid structural asset, rather than releasing it into the atmosphere during production. The work, led by a team at Worcester Polytechnic Institute, uses a naturally occurring enzyme to accelerate mineral formation, similar to how shells and coral reefs are formed in nature. Instead of relying on extreme heat and fossil-fuel-intensive processes, carbon becomes part of the structure itself. That matters at scale. Concrete is the most widely used man-made material on Earth and is responsible for around eight percent of global CO₂ emissions. This new material can be moulded within hours, reaches structural strength under mild conditions, and remains stable even when exposed to water, cutting both energy use and emissions at source. What’s most interesting here is not just the carbon numbers, although they are compelling. It’s the shift in thinking. Rather than trying to make a damaging system slightly less bad, this approach redesigns the system so carbon is treated as a building block rather than a by-product. There is still a long road ahead. Scaling production, strengthening it for high-rise use, and integrating it into existing supply chains will take time. Yet this is exactly how meaningful climate progress tends to happen, through engineering, patience, and better system design, not slogans. This is the direction of travel. Materials that reduce risk, lower long-term cost, and work with natural processes rather than against them. I’m Richard, a the founder of Play It Green, helping businesses grow through sustainability, nature repair and social impact. If you want to stay close to where commercial reality and environmental progress are heading, let’s connect.

🎉 I'm thrilled to share another recent paper from our group in exploring the use of lightweight waste-based materials in 3D-printed concrete to enhance thermal insulation and sustainability. 🔍 Key Highlights: • Lightweight aggregates reduced thermal conductivity by up to 58% in 3D-printed concrete • The pore structure at interlayer interfaces plays a crucial role in both strength and thermal performance • Sustainable use of fly ash cenosphere (FAC) and expanded glass (EG) enhances energy efficiency in 3D-printed concrete In this study, we explored the potential of fly ash cenosphere and expanded glass to create a more energy-efficient mortar, focusing on the interplay between strength and thermal insulation. While there were trade-offs in mechanical properties, the findings point to a future of sustainable construction with lower operational carbon footprints. A huge congratulations to Hamid Bayat, the first author, and the rest of the amazing co-authors (Sadegh Karimpouli, Liming Yang and Hamed Lamei Ramandi) for their contributions to this impactful work. 👏👏 Check out the paper here: https://lnkd.in/gRxqdegu UNSW UNSW Civil and Environmental Engineering #3DPrinting #Concrete #Sustainability #Research #BuildingTheFuture #LightweightAggregates #ConstructionInnovation #EnergyEfficiency