Recycling steel slag as substitute for natural aggregate in construction: dual benefits for GHG emission reduction and environmental protection in Vietnam
Vol. 134 No. 1S-1 (2025), Special Issue: IFGTM 2025
Vol. 134 No. 1S-1 (2025)

Recycling steel slag as substitute for natural aggregate in construction: dual benefits for GHG emission reduction and environmental protection in Vietnam

Special Issue: IFGTM 2025
https://doi.org/10.26459/hueunijns.v134i1S-1.7855
Published 2025-07-10
Trung Quoc Duong
University of Sciences, Hue University, Hue City, Vietnam
Tran Thanh Nhan*
University of Sciences, Hue University, Hue City, Vietnam
Thi Ngoc Quynh Tran
University of Sciences, Hue University, Hue City, Vietnam
Thi Le Huyen Nguyen
University of Sciences, Hue University, Hue City, Vietnam
Quang Thien Do
University of Sciences, Hue University, Hue City, Vietnam
Xuan Thach Tran
Construction Department of Ha Tinh province, Ha Tinh city, Vietnam
Thanh Hai Nguyen
Construction Department of Quang Nam province, Tam Ky city, Vietnam
Huu Dong Nguyen
Ha Tinh University, Cam Vinh, Ha Tinh city, Vietnam
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Keywords

Coastal erosion
concrete aggregate
environment
recycled construction material
steel slag

How to Cite

1.
Duong TQ, Tran TN, Tran TNQ, Nguyen TLH, Do QT, Tran XT, Nguyen TH, Nguyen HD. Recycling steel slag as substitute for natural aggregate in construction: dual benefits for GHG emission reduction and environmental protection in Vietnam. hueuni-jns [Internet]. 2025Jul.10 [cited 2025Oct.10];134(1S-1):27-41. Available from: http://222.255.146.83/index.php/hujos-ns/article/view/7855
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Abstract

In Vietnam, the annual production of steel slag, a byproduct of the steel-making process, has exceeded 3 million tons since 2018. Due to its advantageous properties, over 85% of steel slag is recycled and utilised in construction in developed countries. However, in Vietnam, a significant portion remains either stockpiled at steel plants or used as backfill material, posing risks of soil and water pollution. Meanwhile, natural construction materials such as river sand are becoming depleted, and the extraction of resources like crushed stone leads to various environmental issues. Therefore, recycling steel slag as a substitute for natural construction materials not only mitigates environmental pollution associated with the steel industry but also reduces the depletion of natural resources, contributing to energy conservation and lower greenhouse gas emissions in the construction sector. This study presents initial findings on the use of steel slag as an aggregate in concrete for coastal protection structures, such as wave-breaking blocks, which are essential as coastal erosion has become a critical issue in numerous areas of Vietnam.

https://doi.org/10.26459/hueunijns.v134i1S-1.7855
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