Enhancing the Durability of Pre-Cracked Concrete: The Crucial Role of Metakaolin and Ground Granulated Blast Furnace Slag

Authors

  • Dr. Boudjehm Hocine Department of Architecture, Faculty Of Sciences and Technology, 8 Mai 1945 Guelma University, Algeria
  • Dr. Fathe Bouteldja Department of Civil Engineering, Faculty Of Sciences and Technology, 8 Mai 1945 Guelma University, Algeria
  • MA. Bendjaiche Roubila Department of Civil Engineering, Faculty Of Sciences and Technology, 8 Mai 1945 Guelma University, Algeria
  • Pr. Nafa Zahreddine Department of Civil Engineering, Faculty Of Sciences and Technology, 8 Mai 1945 Guelma University, Algeria

DOI:

https://doi.org/10.38027/ICCAUA2024EN0150

Keywords:

Concrete durability, Metakaolin (MK), Ground granulated blast furnace slag (GBFS), Compressive strength, Sulfuric acid exposure

Abstract

This study conducted a rigorous experiment to assess the strength and durability of pre-cracked concrete modified
with metakaolin (MK) and ground granulated blast furnace slag (GBFS). Three categories of hardened concrete were
compared to conventional concrete, focusing on key parameters such as compressive strength, mass loss, open
porosity, water penetration, capillary water absorption, and drying shrinkage. The assessments were performed under
two levels of compression damage and exposure to sulfuric acid (5% concentration). The results demonstrated a
significant long-term improvement in compressive strength by incorporating MK and GBFS, despite a reduction of up
to 80% in the presence of sulfuric acid. The F10 formulation exhibited the best performance, highlighting the positive
impact of additives on concrete durability. Replacing cement with MK and GBFS at a 10% level was identified as the
optimal design for sewer structures due to minimal shrinkage compared to other formulations.

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Published

2024-06-30

How to Cite

Hocine, B., Bouteldja, F., Roubila, B., & Zahreddine, N. (2024). Enhancing the Durability of Pre-Cracked Concrete: The Crucial Role of Metakaolin and Ground Granulated Blast Furnace Slag. Proceedings of the International Conference of Contemporary Affairs in Architecture and Urbanism-ICCAUA, 7(1), 1410–1418. https://doi.org/10.38027/ICCAUA2024EN0150

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