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May 24, 2026Advances in Civil EngineeringOpen Access

Effect of Activation Mode on the Use of Black Slag in Cementitious Materials for Ecological and Sustainable Construction

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Authors

HZHanane ZadriNTNadia TebbalZRZine El Abidine Rahmouni

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Overview

Randomized trial investigates black slag for geopolymer mortars, suggesting a sustainable construction alternative.

Key Points

  • This research aims to explore the use of black slag as a sustainable alternative to Portland cement in geopolymer mortars.
  • Crystalline black slag was thermally activated by calcination at 800°C and water-quenched.
  • Six blends were synthesized with varying percentages of metakaolin (20%, 50%, 80%, 100%) at a constant precursor/activator ratio.
  • Material characterization was conducted using techniques such as XRD, TGA, DTA, and SEM.
  • The optimal blend with 80% metakaolin substitution achieved compressive strength of 27.34 MPa and flexural strength of 16.52 MPa at 28 days.
  • Thermally activated black slag exhibited a denser matrix and improved pore distribution compared to other blends.
  • The study highlights the effectiveness of black slag as a viable geopolymer precursor for low-carbon construction.

Cite This Study

Zadri et al. (2026) studied this question.

synapsesocial.com/papers/6a12968148a0ea16656734dfhttps://doi.org/10.1155/adce/7134866
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  1. 1Hydration behavior, silicate polymerization and mechanical performance of granulated blast furnace slag-desulfurization gypsum binders under different activation systems2026
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  4. 4Mechanical and Carbonation Performance of Alkali-Activated Mortars Incorporating GGBS and Recycled Construction Spoil2026
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