| Abstrakt: |
The significant challenges in the construction industry, such as resource depletion and carbon dioxide emission, has opened the way for concrete development with immense strength and better durability. Numerous studies were carried out by replacing the basic materials, and various admixtures were introduced into concrete. One such admixture is nano-ground granulated blast furnace slag (NGGBFS), which is known to reinforce the characteristics of concrete and improve its microstructure as evidenced by their exceptional capabilities. The current research focuses on using GGBFS as a nano-based substitute material to extend the life of buildings by mixing in various proportions of 2, 4, 6, 8, 10, and 12% to the weight of cement. A durability test was performed to assess the permeability, acid resistance, and water absorption capacity of NGGBFS. When compared to the control mix, the 8% NGGBFS was determined to have good durability properties with 33.88% increase in compressive strength and 30% reduction in chloride ion penetration. Then, FESEM and EDAX analysis were performed to understand the concrete microstructure. NGGBFS accelerates CSH gel formation at the early stage of hydration by facilitating resistance to water permeability, and increase in the concrete strength was observed in FESEM analysis. As a result, considerable improvements in concrete qualities were observed, demonstrating that the incorporation of nanoparticles may significantly improve properties by substituting industrial waste by-products. |
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