Evaluation of mechanical properties of sustainable and eco-friendly ultra-high-performance concrete using ternary cementitious binders
Building structures using Ultra-High Performance Concrete (UHPC) with better mechanical and durability properties requires effort and consideration for the environment. The present study comprises 17 distinct trial mixes or UHPC. The cementitious content ranges from 1200-1400 kg/m3, the water-to-cem...
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Josip Juraj Strossmayer University of Osijek, Faculty of Civil Engineering and Architecture Osijek, Croatia
2024-01-01
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| Series: | Advances in Civil and Architectural Engineering |
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| Online Access: | https://hrcak.srce.hr/ojs/index.php/acae/article/view/29989/17171 |
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| author | Vineet Kothari Urmil Dave |
| author_facet | Vineet Kothari Urmil Dave |
| author_sort | Vineet Kothari |
| collection | DOAJ |
| description | Building structures using Ultra-High Performance Concrete (UHPC) with better mechanical and durability properties requires effort and consideration for the environment. The present study comprises 17 distinct trial mixes or UHPC. The cementitious content ranges from 1200-1400 kg/m3, the water-to-cementitious ratio varies from 0,16-0,18, and micro-steel fibres measuring 0,2 × 13,0 mm are included at a proportion of 1,5 % of the total concrete volume. A variety of ingredients including cement, fly ash, micro-silica, fine sand, high-range water reducer, shrinkage reducing admixture, micro-steel fibres and water were utilised. Specimens were cast and evaluated at 7, 14, and 28 days for mechanical properties such as flexural, indirect tensile, and compressive strength, as well as fresh concrete characteristics, such as the slump cone test. The results indicate that there was an improvement in the slump cone value as the fly ash content increased. The mechanical characteristics were enhanced by the increase in micro-silica, which is attributed to the refining of the pore structure and the pozzolanic reactivity during the early stages. Optimal blend ratio for maximizing the compressive, tensile and flexural strength of UHPC has been identified in mixes where 15-20 % of cement has been replaced by Supplementary Cementitious Materials (SCMs) in various combinations. The replacement ratio was found to enhanced mechanical properties due to optimized particle packing and improved matrix density within the concrete. |
| format | Article |
| id | doaj-art-f76dbfa8efbe4ccf974a09bc40c0ceda |
| institution | Kabale University |
| issn | 2975-3848 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Josip Juraj Strossmayer University of Osijek, Faculty of Civil Engineering and Architecture Osijek, Croatia |
| record_format | Article |
| series | Advances in Civil and Architectural Engineering |
| spelling | doaj-art-f76dbfa8efbe4ccf974a09bc40c0ceda2025-01-10T09:30:05ZengJosip Juraj Strossmayer University of Osijek, Faculty of Civil Engineering and Architecture Osijek, CroatiaAdvances in Civil and Architectural Engineering2975-38482024-01-01152913715010.13167/2024.29.9Evaluation of mechanical properties of sustainable and eco-friendly ultra-high-performance concrete using ternary cementitious bindersVineet Kothari0Urmil Dave1Nirma University, Institute of Technology, Civil Engineering Department, Charrodi, S. G. Highway, 382481, Ahmedabad, IndiaNirma University, Institute of Technology, Civil Engineering Department, Charrodi, S. G. Highway, 382481, Ahmedabad, IndiaBuilding structures using Ultra-High Performance Concrete (UHPC) with better mechanical and durability properties requires effort and consideration for the environment. The present study comprises 17 distinct trial mixes or UHPC. The cementitious content ranges from 1200-1400 kg/m3, the water-to-cementitious ratio varies from 0,16-0,18, and micro-steel fibres measuring 0,2 × 13,0 mm are included at a proportion of 1,5 % of the total concrete volume. A variety of ingredients including cement, fly ash, micro-silica, fine sand, high-range water reducer, shrinkage reducing admixture, micro-steel fibres and water were utilised. Specimens were cast and evaluated at 7, 14, and 28 days for mechanical properties such as flexural, indirect tensile, and compressive strength, as well as fresh concrete characteristics, such as the slump cone test. The results indicate that there was an improvement in the slump cone value as the fly ash content increased. The mechanical characteristics were enhanced by the increase in micro-silica, which is attributed to the refining of the pore structure and the pozzolanic reactivity during the early stages. Optimal blend ratio for maximizing the compressive, tensile and flexural strength of UHPC has been identified in mixes where 15-20 % of cement has been replaced by Supplementary Cementitious Materials (SCMs) in various combinations. The replacement ratio was found to enhanced mechanical properties due to optimized particle packing and improved matrix density within the concrete.https://hrcak.srce.hr/ojs/index.php/acae/article/view/29989/17171ultra high performance concrete (uhpc)water to binder ratioindirect tensile strengthcompressive strengthflexural strengthmicro steel fibers |
| spellingShingle | Vineet Kothari Urmil Dave Evaluation of mechanical properties of sustainable and eco-friendly ultra-high-performance concrete using ternary cementitious binders Advances in Civil and Architectural Engineering ultra high performance concrete (uhpc) water to binder ratio indirect tensile strength compressive strength flexural strength micro steel fibers |
| title | Evaluation of mechanical properties of sustainable and eco-friendly ultra-high-performance concrete using ternary cementitious binders |
| title_full | Evaluation of mechanical properties of sustainable and eco-friendly ultra-high-performance concrete using ternary cementitious binders |
| title_fullStr | Evaluation of mechanical properties of sustainable and eco-friendly ultra-high-performance concrete using ternary cementitious binders |
| title_full_unstemmed | Evaluation of mechanical properties of sustainable and eco-friendly ultra-high-performance concrete using ternary cementitious binders |
| title_short | Evaluation of mechanical properties of sustainable and eco-friendly ultra-high-performance concrete using ternary cementitious binders |
| title_sort | evaluation of mechanical properties of sustainable and eco friendly ultra high performance concrete using ternary cementitious binders |
| topic | ultra high performance concrete (uhpc) water to binder ratio indirect tensile strength compressive strength flexural strength micro steel fibers |
| url | https://hrcak.srce.hr/ojs/index.php/acae/article/view/29989/17171 |
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