Researchers develop crack-resistant concrete using carpet fibers

To combat the issue of cracking, researchers in Australia have discovered an innovative solution that repurposes waste carpet fibers into concrete, significantly reducing cracking risks. The research team, led by Dr. Chamila Gunasekara from RMIT University, found that adding recycled carpet fibers to concrete can decrease early-age shrinkage cracking by up to 30 percent.

This breakthrough could substantially lower repair costs for construction companies, with Australia currently spending around AUD 8 billion annually on cracked concrete repairs, while the U.S. faces costs reaching USD 76 billion per year. Besides reducing cracks, the recycled fibers boost concrete’s tensile strength by 40 percent, making it more resistant to stretching and pressure. This process also advances sustainability by transforming textile waste into a valuable construction material.

The research, in collaboration with Textile Recyclers Australia, Godfrey Hirst, and local councils in Victoria, is backed by the ARC Industrial Transformation Research Hub. As field tests continue, this project not only promises to revolutionize concrete standards but also tackles environmental challenges.

Utilizing waste carpet fibers in construction reduces textile waste, preventing harmful emissions from disposal methods like incineration or landfill dumping. This innovation could pave the way for a new generation of sustainable construction materials.

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