Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated Temperatures
The reinforcement of ultra-high-performance concrete (UHPC) with fibers was investigated in this study. Concrete is the most widely used manmade construction material, and UHPC has remarkable mechanical properties. The mechanical properties of UHPC can be modified by a variety of curing procedures a...
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MDPI AG
2023-01-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/1/129 |
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| author | Bassam Tayeh Marijana Hadzima-Nyarko Magdy Youssef Riad Riad Radwa Defalla Abdel Hafez |
| author_facet | Bassam Tayeh Marijana Hadzima-Nyarko Magdy Youssef Riad Riad Radwa Defalla Abdel Hafez |
| author_sort | Bassam Tayeh |
| collection | DOAJ |
| description | The reinforcement of ultra-high-performance concrete (UHPC) with fibers was investigated in this study. Concrete is the most widely used manmade construction material, and UHPC has remarkable mechanical properties. The mechanical properties of UHPC can be modified by a variety of curing procedures and the amount of cement used. This study aimed to examine the impact of fiber reinforcement, temperature, and exposure time on UHPC. Initially, the temperature for UHPC was changed from 300 °C to 500 °C and the exposure time set to 1 and 2 h. Various combinations of the ultrasonic pulse, thermal conductivity, compressive strength, flexural strength, splitting, modulus of elasticity, and drop hammer impact (impact resistance, impact energy, and ductility index) were investigated after 91 days of steam curing. For steam curing, the temperature was kept at 90 °C for three days. The mechanical characteristics of UHPC were the primary focus of this research. The test results showed that the accelerated curing regime achieved a maximum compressive strength of 102.6 MPa for UHPC specimens without fibers and 124.7 MPa for UHPC specimens with fibers, which represents a 22% increase in compressive strength. When compared to UHPC without fibers, all the qualities of UHPC with fibers were improved, especially when subjected to high temperatures. The incorporation of hybrid synthetic waste fibers was a key aspect in developing new ultra-high-strength concrete features. |
| first_indexed | 2024-03-09T13:20:05Z |
| format | Article |
| id | doaj.art-1f3eb6b1454a459f892d245fa06732c5 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T13:20:05Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-1f3eb6b1454a459f892d245fa06732c52023-11-30T21:30:18ZengMDPI AGBuildings2075-53092023-01-0113112910.3390/buildings13010129Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated TemperaturesBassam Tayeh0Marijana Hadzima-Nyarko1Magdy Youssef Riad Riad2Radwa Defalla Abdel Hafez3Civil Engineering Department, Faculty of Engineering, Islamic University of Gaza, Gaza Strip P.O. Box 108, PalestineFaculty of Civil Engineering and Architecture Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 3, 31000 Osijek, CroatiaCivil Engineering Department, High Institute of Engineering, Shrouk Academy, El Shorouk 02/82524, EgyptCivil and Architectural Constructions Department, Faculty of Technology and Education, Sohag University, Arab El Atawla 02/82524, EgyptThe reinforcement of ultra-high-performance concrete (UHPC) with fibers was investigated in this study. Concrete is the most widely used manmade construction material, and UHPC has remarkable mechanical properties. The mechanical properties of UHPC can be modified by a variety of curing procedures and the amount of cement used. This study aimed to examine the impact of fiber reinforcement, temperature, and exposure time on UHPC. Initially, the temperature for UHPC was changed from 300 °C to 500 °C and the exposure time set to 1 and 2 h. Various combinations of the ultrasonic pulse, thermal conductivity, compressive strength, flexural strength, splitting, modulus of elasticity, and drop hammer impact (impact resistance, impact energy, and ductility index) were investigated after 91 days of steam curing. For steam curing, the temperature was kept at 90 °C for three days. The mechanical characteristics of UHPC were the primary focus of this research. The test results showed that the accelerated curing regime achieved a maximum compressive strength of 102.6 MPa for UHPC specimens without fibers and 124.7 MPa for UHPC specimens with fibers, which represents a 22% increase in compressive strength. When compared to UHPC without fibers, all the qualities of UHPC with fibers were improved, especially when subjected to high temperatures. The incorporation of hybrid synthetic waste fibers was a key aspect in developing new ultra-high-strength concrete features.https://www.mdpi.com/2075-5309/13/1/129destructive tests (DTs)nondestructive tests (NDTs)microstructure analysisstrength of ultra-high-performance concrete (UHPC) with fiber reinforcementelevated temperaturehybrid synthetic waste fibers (HSWFs) |
| spellingShingle | Bassam Tayeh Marijana Hadzima-Nyarko Magdy Youssef Riad Riad Radwa Defalla Abdel Hafez Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated Temperatures Buildings destructive tests (DTs) nondestructive tests (NDTs) microstructure analysis strength of ultra-high-performance concrete (UHPC) with fiber reinforcement elevated temperature hybrid synthetic waste fibers (HSWFs) |
| title | Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated Temperatures |
| title_full | Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated Temperatures |
| title_fullStr | Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated Temperatures |
| title_full_unstemmed | Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated Temperatures |
| title_short | Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated Temperatures |
| title_sort | behavior of ultra high performance concrete with hybrid synthetic fiber waste exposed to elevated temperatures |
| topic | destructive tests (DTs) nondestructive tests (NDTs) microstructure analysis strength of ultra-high-performance concrete (UHPC) with fiber reinforcement elevated temperature hybrid synthetic waste fibers (HSWFs) |
| url | https://www.mdpi.com/2075-5309/13/1/129 |
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