Residual Tensile Properties and Explosive Spalling of High-Performance Fiber-Reinforced Cementitious Composites Exposed to Thermal Damage
This study examined the effect of adding synthetic fibers, that is, polypropylene (PP) and nylon (Ny), on explosive spalling and residual tensile mechanical properties of high-performance fiber-reinforced cementitious composites (HPFRCCs). Three different matrix strengths (100 MPa, 140 MPa, and 180 MPa), four different volume contents of the synthetic fibers (0%, 0.2%, 0.4%, and 0.6%), and three different exposure time (1 h, 2 h, and 3 h) based on the Internatinoal Organization for Standardization (ISO) fire curve were adopted as variables for this experiment. The experimental results revealed that the addition of synthetic fibers improved the resistance to explosive spalling induced by high-temperature, especially when PP and Ny were mixed together. For a higher matrix strength, greater volume content of the synthetic fibers was required to prevent explosive spalling, and higher residual strengths were obtained after the fire tests. An increase in the volume fraction of the synthetic fibers clearly prevented explosive spalling but did not affect the residual tensile strength. In the case of a higher matrix strength, a reduction in the strength ratio was observed with increased exposure time.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:14 |
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| Enthalten in: |
Materials (Basel, Switzerland) - 14(2021), 7 vom: 25. März |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Park, Gang-Kyu [VerfasserIn] |
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| Links: |
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| Themen: |
Direct tensile strength |
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| Anmerkungen: |
Date Revised 13.04.2021 published: Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.3390/ma14071608 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM323616119 |
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| 100 | 1 | |a Park, Gang-Kyu |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Residual Tensile Properties and Explosive Spalling of High-Performance Fiber-Reinforced Cementitious Composites Exposed to Thermal Damage |
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| 500 | |a Date Revised 13.04.2021 | ||
| 500 | |a published: Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a This study examined the effect of adding synthetic fibers, that is, polypropylene (PP) and nylon (Ny), on explosive spalling and residual tensile mechanical properties of high-performance fiber-reinforced cementitious composites (HPFRCCs). Three different matrix strengths (100 MPa, 140 MPa, and 180 MPa), four different volume contents of the synthetic fibers (0%, 0.2%, 0.4%, and 0.6%), and three different exposure time (1 h, 2 h, and 3 h) based on the Internatinoal Organization for Standardization (ISO) fire curve were adopted as variables for this experiment. The experimental results revealed that the addition of synthetic fibers improved the resistance to explosive spalling induced by high-temperature, especially when PP and Ny were mixed together. For a higher matrix strength, greater volume content of the synthetic fibers was required to prevent explosive spalling, and higher residual strengths were obtained after the fire tests. An increase in the volume fraction of the synthetic fibers clearly prevented explosive spalling but did not affect the residual tensile strength. In the case of a higher matrix strength, a reduction in the strength ratio was observed with increased exposure time | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a direct tensile strength | |
| 650 | 4 | |a explosive spalling | |
| 650 | 4 | |a high-performance fiber-reinforced cementitious composites | |
| 650 | 4 | |a residual strength | |
| 650 | 4 | |a synthetic fibers | |
| 700 | 1 | |a Park, Gi-Joon |e verfasserin |4 aut | |
| 700 | 1 | |a Park, Jung-Jun |e verfasserin |4 aut | |
| 700 | 1 | |a Lee, Namkon |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Sung-Wook |e verfasserin |4 aut | |
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