Self-Compacting Concrete (SCC) Advances in Mix Design and Field Applications
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2026
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| _version_ | 1866901513100591104 |
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| author | Rahul Kumar |
| author_facet | Rahul Kumar |
| contents | In recent years, research on Self-Compacting Concrete (SCC) has increasingly focused on the development of high-strength variants. High-strength SCC has been widely adopted in applications such as precast bridge components and high-rise building construction. The use of manufactured sand (M-sand) as a fine aggregate provides an effective solution to the depletion of natural sand resources. This study aims to optimize the mix design of high-strength self-compacting concrete incorporating manufactured sand (MSH-SCC). The effects of fine aggregate replacement ratio, sand ratio, and maximum nominal size of coarse aggregate on the performance of MSH-SCC were systematically investigated. The results indicate that the optimized mix proportions for different strength grades satisfy the required performance criteria. It was observed that the fine aggregate replacement ratio and maximum aggregate size significantly influence the workability of SCC, whereas the sand ratio has a comparatively minor effect. Furthermore, the yield stress of MSH-SCC showed a positive correlation with both the fine aggregate replacement ratio and the maximum aggregate size, while plastic viscosity reached peak values under specific conditions. The variation in mix design parameters had only a limited influence on the mechanical strength of the concrete. Overall, this study provides a scientific basis for the mix design of high-strength SCC using manufactured sand and supports its application in sustainable and low-carbon construction practices. In addition, there is an increasing demand for advanced concrete materials that offer high strength, durability, improved serviceability, and cost-effectiveness over an extended service life. Ultra-High Performance Concrete (UHPC), also known as Reactive Powder Concrete (RPC), fulfills these requirements. UHPC is characterized by a very low water-binder ratio (typically less than 0.25) and optimized particle packing, resulting in compressive strengths exceeding 120 MPa and a dense microstructure that significantly reduces permeability. This study also evaluates the compressive strength and durability characteristics of UHPC mixtures incorporating supplementary cementitious materials such as silica fume, nano-silica, and ground granulated blast furnace slag (GGBS) or Alccofine as partial replacements of cement. Steel fibers were included at varying dosages of 0.5%, 1.0%, and 1.5% by volume, with a constant water-binder ratio of 0.18. A comprehensive literature review was conducted to understand global advancements in UHPC. The findings indicate that optimized UHPC mixes with supplementary cementitious materials exhibit excellent performance, particularly in terms of resistance to sulphate attack and chloride ion penetration. The Rapid Chloride Penetration Test (RCPT) results classified all mixes within the "Very Low" to "Negligible" permeability range, as per ASTM C1202 standards. |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19416600 |
| institution | Zenodo |
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| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Self-Compacting Concrete (SCC) Advances in Mix Design and Field Applications Rahul Kumar Ultra high-performance concrete (UHPC) Durability properties Mechanical characteristics Resistance to chemical attacks Sustainable infrastructure. In recent years, research on Self-Compacting Concrete (SCC) has increasingly focused on the development of high-strength variants. High-strength SCC has been widely adopted in applications such as precast bridge components and high-rise building construction. The use of manufactured sand (M-sand) as a fine aggregate provides an effective solution to the depletion of natural sand resources. This study aims to optimize the mix design of high-strength self-compacting concrete incorporating manufactured sand (MSH-SCC). The effects of fine aggregate replacement ratio, sand ratio, and maximum nominal size of coarse aggregate on the performance of MSH-SCC were systematically investigated. The results indicate that the optimized mix proportions for different strength grades satisfy the required performance criteria. It was observed that the fine aggregate replacement ratio and maximum aggregate size significantly influence the workability of SCC, whereas the sand ratio has a comparatively minor effect. Furthermore, the yield stress of MSH-SCC showed a positive correlation with both the fine aggregate replacement ratio and the maximum aggregate size, while plastic viscosity reached peak values under specific conditions. The variation in mix design parameters had only a limited influence on the mechanical strength of the concrete. Overall, this study provides a scientific basis for the mix design of high-strength SCC using manufactured sand and supports its application in sustainable and low-carbon construction practices. In addition, there is an increasing demand for advanced concrete materials that offer high strength, durability, improved serviceability, and cost-effectiveness over an extended service life. Ultra-High Performance Concrete (UHPC), also known as Reactive Powder Concrete (RPC), fulfills these requirements. UHPC is characterized by a very low water-binder ratio (typically less than 0.25) and optimized particle packing, resulting in compressive strengths exceeding 120 MPa and a dense microstructure that significantly reduces permeability. This study also evaluates the compressive strength and durability characteristics of UHPC mixtures incorporating supplementary cementitious materials such as silica fume, nano-silica, and ground granulated blast furnace slag (GGBS) or Alccofine as partial replacements of cement. Steel fibers were included at varying dosages of 0.5%, 1.0%, and 1.5% by volume, with a constant water-binder ratio of 0.18. A comprehensive literature review was conducted to understand global advancements in UHPC. The findings indicate that optimized UHPC mixes with supplementary cementitious materials exhibit excellent performance, particularly in terms of resistance to sulphate attack and chloride ion penetration. The Rapid Chloride Penetration Test (RCPT) results classified all mixes within the "Very Low" to "Negligible" permeability range, as per ASTM C1202 standards. |
| title | Self-Compacting Concrete (SCC) Advances in Mix Design and Field Applications |
| topic | Ultra high-performance concrete (UHPC) Durability properties Mechanical characteristics Resistance to chemical attacks Sustainable infrastructure. |
| url | https://doi.org/10.5281/zenodo.19416600 |