Mechanical and structural properties of fiber-reinforced heavyweight self-compacting concrete incorporating supplementary cementitious materials
The study examines the mechanical, and structural properties of fiber-reinforced heavyweight self-compacting concrete (FRHWSCC) incorporating high-density baryte, and magnetite aggregates. Three types of fibers were utilized: polypropylene (PP), multi-walled carbon nanotubes (CNT), and steel (St), w...
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Elsevier
2025-06-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025013945 |
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| author | Jana Čepčianska Martin T. Palou Peter Czirák Michal Slaný Marián Matejdes Matúš Žemlička |
| author_facet | Jana Čepčianska Martin T. Palou Peter Czirák Michal Slaný Marián Matejdes Matúš Žemlička |
| author_sort | Jana Čepčianska |
| collection | DOAJ |
| description | The study examines the mechanical, and structural properties of fiber-reinforced heavyweight self-compacting concrete (FRHWSCC) incorporating high-density baryte, and magnetite aggregates. Three types of fibers were utilized: polypropylene (PP), multi-walled carbon nanotubes (CNT), and steel (St), with volumetric contents of 0.5 %, 0.5 %, and 2.0 %, respectively. Two concrete series were designed: S100, and S65. The S100 series comprised 100 mass% ordinary Portland cement (OPC), while in the S65 series, 35 mass% of OPC was substituted with supplementary cementitious materials (SCMs), including ground limestone (GL), ground-granulated blast-furnace slag (GGBFS), and metakaolin (MK). Experimental findings revealed that the compressive strength of magnetite-based samples exceeded 70 MPa, whereas baryte-based samples exceeded 50 MPa after 90 days. Structural evaluations through mercury intrusion porosimetry (MIP), and scanning electron microscopy (SEM) provided detailed analyses of porosity, and interfacial transition zone (ITZ) between fibers, and concrete matrix. The incorporation of SCMs enhanced long-term mechanical properties through pozzolanic/alkali-activated reactions, and pore structure refinement, thereby densifying the concrete matrix. The addition of PP, and St fibers improved flexural strength, and crack resistance, while all three fiber types contributed to reduced shrinkage. |
| format | Article |
| id | doaj-art-dd74c0ee0b804f899075df40978f9b92 |
| institution | OA Journals |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
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| series | Results in Engineering |
| spelling | doaj-art-dd74c0ee0b804f899075df40978f9b922025-08-20T02:29:20ZengElsevierResults in Engineering2590-12302025-06-012610532410.1016/j.rineng.2025.105324Mechanical and structural properties of fiber-reinforced heavyweight self-compacting concrete incorporating supplementary cementitious materialsJana Čepčianska0Martin T. Palou1Peter Czirák2Michal Slaný3Marián Matejdes4Matúš Žemlička5Institute of Construction and Architecture, Slovak Academy of Sciences, Dúbravská cesta 9, 845 03 Bratislava, Slovak Republic; Corresponding Author.Institute of Construction and Architecture, Slovak Academy of Sciences, Dúbravská cesta 9, 845 03 Bratislava, Slovak RepublicInstitute of Construction and Architecture, Slovak Academy of Sciences, Dúbravská cesta 9, 845 03 Bratislava, Slovak RepublicDepartment of Materials and Physics, Faculty of Civil Engineering Slovak University of Technology, Radlinského 2766/11, 810 05 Bratislava, Slovak RepublicInstitute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 03 Bratislava, Slovak RepublicInstitute of Construction and Architecture, Slovak Academy of Sciences, Dúbravská cesta 9, 845 03 Bratislava, Slovak RepublicThe study examines the mechanical, and structural properties of fiber-reinforced heavyweight self-compacting concrete (FRHWSCC) incorporating high-density baryte, and magnetite aggregates. Three types of fibers were utilized: polypropylene (PP), multi-walled carbon nanotubes (CNT), and steel (St), with volumetric contents of 0.5 %, 0.5 %, and 2.0 %, respectively. Two concrete series were designed: S100, and S65. The S100 series comprised 100 mass% ordinary Portland cement (OPC), while in the S65 series, 35 mass% of OPC was substituted with supplementary cementitious materials (SCMs), including ground limestone (GL), ground-granulated blast-furnace slag (GGBFS), and metakaolin (MK). Experimental findings revealed that the compressive strength of magnetite-based samples exceeded 70 MPa, whereas baryte-based samples exceeded 50 MPa after 90 days. Structural evaluations through mercury intrusion porosimetry (MIP), and scanning electron microscopy (SEM) provided detailed analyses of porosity, and interfacial transition zone (ITZ) between fibers, and concrete matrix. The incorporation of SCMs enhanced long-term mechanical properties through pozzolanic/alkali-activated reactions, and pore structure refinement, thereby densifying the concrete matrix. The addition of PP, and St fibers improved flexural strength, and crack resistance, while all three fiber types contributed to reduced shrinkage.http://www.sciencedirect.com/science/article/pii/S2590123025013945self-compacting concretehigh-density aggregatefiberssupplementary cementitious materials |
| spellingShingle | Jana Čepčianska Martin T. Palou Peter Czirák Michal Slaný Marián Matejdes Matúš Žemlička Mechanical and structural properties of fiber-reinforced heavyweight self-compacting concrete incorporating supplementary cementitious materials Results in Engineering self-compacting concrete high-density aggregate fibers supplementary cementitious materials |
| title | Mechanical and structural properties of fiber-reinforced heavyweight self-compacting concrete incorporating supplementary cementitious materials |
| title_full | Mechanical and structural properties of fiber-reinforced heavyweight self-compacting concrete incorporating supplementary cementitious materials |
| title_fullStr | Mechanical and structural properties of fiber-reinforced heavyweight self-compacting concrete incorporating supplementary cementitious materials |
| title_full_unstemmed | Mechanical and structural properties of fiber-reinforced heavyweight self-compacting concrete incorporating supplementary cementitious materials |
| title_short | Mechanical and structural properties of fiber-reinforced heavyweight self-compacting concrete incorporating supplementary cementitious materials |
| title_sort | mechanical and structural properties of fiber reinforced heavyweight self compacting concrete incorporating supplementary cementitious materials |
| topic | self-compacting concrete high-density aggregate fibers supplementary cementitious materials |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025013945 |
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