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This study primarily focuses on the use of blast furnace slag as a partial replacement for cement and artificial sand as an alternative to natural river sand. The impact of different proportions of GGBS and manufactured sand on the workability, flexural strength, compressive strength, and microstructural properties of concrete mixes was analyzed by several experimental methods. This study included substituting 10, 20, and 30% of the cement content with GGBS to create pavement grade concrete mixes. Pavement Quality Concrete mixes augmented with GGBS were evaluated for workability, and strength properties. The study examined the impact of substituting natural fine aggregate with synthetic sand at weight ratios of 20, 40, 60, 80, and 100%. The findings indicate that the mechanical properties of concrete are enhanced by including GGBS and manufactured sand. Research indicates that GGBFS-PQC exhibited a 7.71% increase in flexural strength and a 14.63% enhancement in compressive strength when GGBS was appropriately replaced for 20% of the cement. When 100% synthetic sand replaced natural fine aggregate, the flexural strength of the concrete improved by 12.47%, and its compressive strength rose by 15.39% compared to conventional Pavement Quality Concrete. Furthermore, combining 20% GGBS with 100% manufactured sand in the mix led to increases of 15.96% in compressive strength and 13.03% in flexural strength. Therefore, using GGBFS-PQC and MS-PQC can make Cement Concrete Pavements more cost-effective by allowing for thinner layers and reduced overall expenses. This approach not only improves the durability and lifespan of the pavements but also offers environmental benefits by aiding in waste disposal.

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Optimization of Supplementary Cementitious Materials and Alternative Fine Aggregates on the Strength of PQC

  • 会议论文

  • 发表日期：

    2026年

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  • Jitendra Singh Yadav,
  • Kamal Singh,
  • Shubham,
  • Chandra Prakash Gour,
  • Harsh Rajak,
  • Deepak Soni

摘要

This study primarily focuses on the use of blast furnace slag as a partial replacement for cement and artificial sand as an alternative to natural river sand. The impact of different proportions of GGBS and manufactured sand on the workability, flexural strength, compressive strength, and microstructural properties of concrete mixes was analyzed by several experimental methods. This study included substituting 10, 20, and 30% of the cement content with GGBS to create pavement grade concrete mixes. Pavement Quality Concrete mixes augmented with GGBS were evaluated for workability, and strength properties. The study examined the impact of substituting natural fine aggregate with synthetic sand at weight ratios of 20, 40, 60, 80, and 100%. The findings indicate that the mechanical properties of concrete are enhanced by including GGBS and manufactured sand. Research indicates that GGBFS-PQC exhibited a 7.71% increase in flexural strength and a 14.63% enhancement in compressive strength when GGBS was appropriately replaced for 20% of the cement. When 100% synthetic sand replaced natural fine aggregate, the flexural strength of the concrete improved by 12.47%, and its compressive strength rose by 15.39% compared to conventional Pavement Quality Concrete. Furthermore, combining 20% GGBS with 100% manufactured sand in the mix led to increases of 15.96% in compressive strength and 13.03% in flexural strength. Therefore, using GGBFS-PQC and MS-PQC can make Cement Concrete Pavements more cost-effective by allowing for thinner layers and reduced overall expenses. This approach not only improves the durability and lifespan of the pavements but also offers environmental benefits by aiding in waste disposal.