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<p>This study explores a sustainable bioengineering approach to industrial waste management by investigating the potential of Linz-Donawitz (LD) slag as a cementitious material in construction applications. LD slag, a durable and compact by-product of steel manufacturing, exhibits properties suitable for partial replacement of Ordinary Portland Cement (OPC) in construction. In this study, OPC 53-grade was partially substituted with finely treated LD slag in proportions ranging from 10 to 100%, and the compressive strength of the resulting mortar cubes was evaluated over 3, 7, and 28&#xa0;days. The findings reveal that a 30% replacement of cement with LD slag yields the highest compressive strength of 48.15&#xa0;MPa at 28&#xa0;days, demonstrating its viability as a supplementary cementitious material. However, higher replacement levels result in a progressive decline in strength, highlighting limitations in its usage. This research underscores the potential of treated LD slag as an effective and eco-friendly alternative for sustainable industrial waste valorization, contributing to the circular economy and reduced environmental impact in the construction sector.</p>

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Sustainable bioengineering approach to industrial waste management: LD slag as a cementitious material

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月4日

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  • Pramod Kumar,
  • Abhilash Gogineni,
  • Muhammad Imam Ammarullah

摘要

This study explores a sustainable bioengineering approach to industrial waste management by investigating the potential of Linz-Donawitz (LD) slag as a cementitious material in construction applications. LD slag, a durable and compact by-product of steel manufacturing, exhibits properties suitable for partial replacement of Ordinary Portland Cement (OPC) in construction. In this study, OPC 53-grade was partially substituted with finely treated LD slag in proportions ranging from 10 to 100%, and the compressive strength of the resulting mortar cubes was evaluated over 3, 7, and 28 days. The findings reveal that a 30% replacement of cement with LD slag yields the highest compressive strength of 48.15 MPa at 28 days, demonstrating its viability as a supplementary cementitious material. However, higher replacement levels result in a progressive decline in strength, highlighting limitations in its usage. This research underscores the potential of treated LD slag as an effective and eco-friendly alternative for sustainable industrial waste valorization, contributing to the circular economy and reduced environmental impact in the construction sector.