From Sugarcane Waste to Revolutionary Building Material

The construction industry stands at a crossroads, grappling with its massive environmental footprint—responsible for nearly 40 percent of global carbon dioxide emissions. Enter Sugarcrete, a groundbreaking low-carbon alternative to traditional bricks and concrete blockwork, pioneered by researchers at the University of East London (UEL). This innovative material transforms sugarcane bagasse—the fibrous residue left after sugar extraction—into durable, eco-friendly building blocks by combining it with sand-mineral binders.

Developed through UEL's Sustainability Research Institute (SRI), Sugarcrete exemplifies how higher education institutions in the United Kingdom are driving real-world solutions to climate challenges. Sugarcane, the world's largest crop by volume at 1.9 billion tonnes annually, absorbs CO2 up to 50 times faster than traditional forestry, making its waste an ideal resource for carbon-sequestering construction. What began as a research project has evolved into a global initiative, particularly through new partnerships in India, where sugarcane production exceeds 400 million tonnes yearly.

The Science Behind Sugarcrete's Creation at UEL

At the heart of Sugarcrete is a simple yet ingenious process. Bagasse fibres are mixed with bespoke low-carbon mineral binders, such as quicklime and clay, along with sand and water. The mixture is compacted into moulds, demoulded after 24 hours, and cured—often in just 48 hours using oven drying at 100°C for optimal strength. This contrasts sharply with traditional concrete's 28-day curing period.

UEL's team, led by Senior Lecturer Armor Gutierrez Rivas, Co-Director Alan Chandler, and Research Fellow Bamdad Ayati, refined the formula over two years. Collaborations with Grimshaw Architects and Tate & Lyle Sugars provided expertise in design and material sourcing. The result? Blocks that are four to five times lighter than concrete, with compressive strengths ranging from 6.81 to 7.18 N/mm²—suitable for non-structural and load-bearing applications in low-rise buildings.

• Step 1: Source and grind dried bagasse into fine fibres.
• Step 2: Proportion mix (e.g., 1:2:2 bagasse:lime:clay:water ratios optimized for strength).
• Step 3: Mix manually or mechanically for homogeneity.
• Step 4: Compact into standard-sized moulds (230x110x75 mm).
• Step 5: Cure rapidly, achieving pozzolanic reactions for durability.

This open-access formula allows local adaptation, crucial for scalability in sugarcane-rich regions.

Performance Properties That Outshine Traditional Materials

Sugarcrete isn't just green—it's robust. Independent tests confirm its excellence: thermal conductivity via Hot-Box method shows superior insulation; ASTM C39 verifies compressive strength; BS EN 927-6 assesses durability; and ISO 1716:2021 grants A1 fire classification. Water absorption is minimized with balanced lime-clay ratios, reducing weathering risks after 45 days of exposure.

In acoustic trials, it demonstrated promising sound insulation, ideal for schools and homes. Thermally, its lightweight nature and breathability balance heat storage, enhancing energy efficiency in hot climates like India's.

For more on its mechanical testing, see the detailed experimental study on Sugarcrete blocks.Experimental Investigation PDF

India's First Sugarcrete School: A Real-World Case Study

In Noida, Uttar Pradesh, UEL staff and students constructed the world's first full-scale Sugarcrete building—a classroom at Panchsheel Balak Inter College (PBIC)—completed in September 2024. Partnering with Chemical Systems Technologies (CST), they set up India's inaugural Sugarcrete factory using local bagasse from Daurala Industries.

The interlocking blocks, secured with lime mortar on a concrete slab, feature a steel-framed angular roof for ventilation. Now a sustainability lab, it educates students on eco-building while monitoring insulation, acoustics, and moisture. A joint study group with Delhi Technological University tracks long-term performance.

Principal Dr. Neeraj Tandan praises its alignment with sustainable learning, while CST's Sunil Singhal highlights India's biomass potential.UEL India School News

Key Partnerships Propelling Sugarcrete's Global Reach

UEL's collaborative model is key. CST enabled factory setup; Paryatan Foundation plans another school in Hisar; CCSHAU Haryana University signed an MoU for research. Globally, projects span Spain, Portugal, Kenya, Brazil, and more—open-source to foster local production.

In the UK, Tate & Lyle supports Silvertown initiatives. Grimshaw's prototype slab demonstrates reusability, cutting steel by 90%.Grimshaw Sugarcrete Slab

Fire Resistance Breakthrough Elevates Safety Credentials

In December 2025, Sugarcrete achieved an EI 240 rating at AFITI Labs, Spain—withstanding 1,100°C for four hours while external surfaces stayed at 26°C. Surpassing clay bricks and matching specialist partitions, it's now suitable for data centres and escape routes.

Alan Chandler notes: "Sugarcrete is not only sustainable but safe and resilient."UEL Fire Test Report

Quantifying the Environmental and Economic Gains

One cubic metre sequesters up to 170kg CO2; a single-story house avoids ~120 tonnes vs. clay bricks. Scaling to 30% of global bagasse (600m tonnes) could slash 1.1 Gt CO2eq—3% of global emissions. In Vietnam, replacing 10% concrete saves 15 Mt CO2/year.

• 6x lower carbon than clay bricks, 20x lower than concrete.
• Job creation in waste processing and manufacturing.
• Reduced transport costs in remote areas.

Overcoming Challenges for Widespread Adoption

Challenges include mix optimization for local binders and supply consistency. UEL addresses via partnerships and PhD research (e.g., Oluchukwu Okonkwo). Weathering tests show lime-clay balance mitigates erosion; fire and durability certifications build trust.

Expert Armor Gutierrez emphasizes adaptation: "Local producers create affordable vernacular materials." Scalability hinges on carbon credits and policy support.

Future Horizons: Scalability and Broader Applications

With trademarks in key markets and projects in 10+ countries, Sugarcrete eyes certifications and carbon trading. In UK higher ed, it inspires curricula in sustainable architecture. India expansions via CST could transform rural housing; globally, seismic-resistant slabs aid disaster zones.

UEL's Vision 2028 positions it as a climate leader, fostering PhDs and industry ties.

Photo by Vitaly Gariev on Unsplash

UEL's Leadership in UK Higher Education Sustainability

This breakthrough underscores UEL's role in translational research, blending architecture, engineering, and sustainability. Student involvement—from MArch teams to PhDs—prepares graduates for green jobs. As UK universities face net-zero mandates, Sugarcrete models impactful innovation.