Monday, April 28, 2025

Energy-smart bricks keep waste out of landfill

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The workforce could make energy-smart bricks in a spread of colors. Credit score: Seamus Daniel, RMIT College

Engineers have invented energy-efficient bricks with scrap supplies, together with glass, which are usually destined for landfill.

RMIT College engineers collaborated with Visy—Australia’s largest recycling firm—to make bricks with a minimal of 15% waste glass and 20% combusted strong waste (ash), as substitutes for clay.

Take a look at outcomes point out that utilizing these bricks within the development of a single-story constructing might scale back family vitality payments by as much as 5% in comparison with common bricks, attributable to improved insulation.

Changing clay with waste supplies within the brick manufacturing helped scale back the firing temperature by as much as 20% in contrast with commonplace brick mixtures, providing potential price financial savings to producers.

Staff chief Affiliate Professor Dilan Robert mentioned about 1.4 trillion bricks had been utilized in construction projects globally yearly.

“Enterprise-as-usual brick manufacturing produces dangerous emissions—together with carbon dioxidesulfur dioxide and chlorine—and places a critical pressure on our pure assets, significantly clay,” mentioned Dilan, from RMIT’s College of Engineering.

The workforce’s newest analysis is published within the journal Building and Constructing Supplies.

Potential to make our properties and workplaces extra vitality environment friendly

The workforce’s analysis confirmed the brand new bricks have enhanced energy efficiency by way of improved thermal efficiency, and met stringent structural, sturdiness and environmental sustainability requirements. The expertise has met the important thing compliance requirement of fired clay bricks set by Requirements Australia (AS 3700).

“Bricks play a key role in preventing energy loss from buildings,” Robert mentioned.

“We can also produce light-weight bricks in a range of colors from white to dark red by changing our formulations.”

Dr. Biplob Pramanik, the RMIT workforce’s environmental engineer, mentioned the brand new bricks had been secure to make use of in development tasks.

“Our bricks, manufactured from industry waste, meet state environmental regulations,” he mentioned.

A ‘circular-economy answer’ to an enormous waste problem

In Victoria, Visy recycles glass packaging again into new bottles and jars. Nevertheless, glass items smaller than 3mm—known as fines—can’t be recycled into bottles.

“We are focusing on scaling up the production process to facilitate the commercialization of our innovative bricks in collaboration with brick manufacturers in Melbourne,” Robert mentioned.

Paul Andrich, Innovation Undertaking Supervisor at Visy, mentioned the corporate was thrilled to discover a answer for materials that can’t be recycled into meals and beverage packaging.

“Diverting this waste into bricks with added insulation, rather than landfill, is another way we are powering the circular economy,” he mentioned.

The analysis workforce desires to collaborate with industries to discover functions of waste materials in different development merchandise.

Extra data:
Yuecheng Xin et al, Using rejected contaminants from the paper recycling course of in fired clay brick manufacturing, Building and Constructing Supplies (2023). DOI: 10.1016/j.conbuildmat.2023.134031

The RMIT workforce has revealed peer-reviewed analysis on the brick innovation in a number of journals:

Yuecheng Xin et al, Vitality effectivity of waste reformed fired clay bricks-from manufacturing to submit utility, Vitality (2023). DOI: 10.1016/j.energy.2023.128755

Yuecheng Xin et al, A Viable Answer for Industrial Waste Ash: Recycling in Fired Clay Bricks, Journal of Supplies in Civil Engineering (2023). DOI: 10.1061/JMCEE7.MTENG-15165

Yuecheng Xin et al, Transformation of waste-contaminated glass mud in sustainable fired clay bricks, Case Research in Building Supplies (2022). DOI: 10.1016/j.cscm.2022.e01717

Supplied by
RMIT University


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Vitality-smart bricks maintain waste out of landfill (2024, April 23)
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