What is it about?

This study explores a forward-thinking approach to sustainable infrastructure by transforming coal mine waste rock into a functional aggregate for concrete used in low-traffic roads. Instead of viewing this industrial byproduct as a burden, the research treats it as a valuable resource. Through optimized mix design and performance evaluation, the findings reveal that concrete with reduced cement and crushed waste rock can meet both structural and environmental expectations. The work not only proposes a practical solution to the depletion of natural aggregates but also offers a meaningful strategy for recycling coal mining waste in road construction.

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Why is it important?

This study responds to the urgent demand for sustainable construction by turning coal mine waste rock into a viable aggregate for concrete with reduced cement. It not only conserves natural resources and limits industrial waste but also introduces a practical classification method that improves material selection. The outcome is a scalable and resource-efficient solution for low traffic infrastructure.

Perspectives

This study redefines industrial waste as a resource, offering a sustainable solution by integrating coal mine waste rock into concrete with reduced cement content. It presents a forward-looking approach that balances environmental responsibility with practical application in infrastructure development.

Van Minh Nguyen

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This page is a summary of: Optimizing aggregate grading and residual mortar coefficient in low-cement concrete by using crushed coal mine waste rock as base layers for low-traffic roads, Construction and Building Materials, October 2024, Elsevier,
DOI: 10.1016/j.conbuildmat.2024.138468.
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