Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete
This study investigates the dynamic properties of Reactive Powder Underwater Concrete (RPUWC), a novel composite integrating attributes of Reactive Powder Concrete and underwater cast concrete. The study focuses on assessing the impact resistance, dynamic modulus of elasticity, rigidity, and Poisson...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2023-11-01
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| Series: | Engineering and Technology Journal |
| Subjects: | |
| Online Access: | https://etj.uotechnology.edu.iq/article_181122_84be1d36e57888c47741473c6a1fea45.pdf |
| _version_ | 1797337745225416704 |
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| author | Doha AlSaffar Basil Al-Shathr Suhair Abed |
| author_facet | Doha AlSaffar Basil Al-Shathr Suhair Abed |
| author_sort | Doha AlSaffar |
| collection | DOAJ |
| description | This study investigates the dynamic properties of Reactive Powder Underwater Concrete (RPUWC), a novel composite integrating attributes of Reactive Powder Concrete and underwater cast concrete. The study focuses on assessing the impact resistance, dynamic modulus of elasticity, rigidity, and Poisson's ratio. The influence of micro steel fibers (MS) at different volume fractions (1%, 1.25%, and 1.5%) and different anti-washout admixture (AWA) dosages (0.5 %, 0.7%, and 0.9%) are examined. The findings indicate that increasing the MS content improves crack resistance and energy absorption, resulting in a substantial 155.6% enhancement in the first crack resistance when using 1.5% MS. Additionally, ultimate resistance improves by 158%. Furthermore, there are significant increases in the dynamic and modulus of rigidity as the MS percentage rises. The impact of AWA is rather limited, with a reduction in the dynamic modulus of 18.3% for 0.7% AWA and 30% for 0.9% AWA. Likewise, the modulus of rigidity decreases by 13% for 0.7% AWA and 23.9% for 0.9% AWA. Moreover, strong positive correlations between non-destructive testing (NDT) and ASTM C 215 equations are observed. This investigation addresses a significant knowledge gap, shedding light on optimizing underwater structures' performance by comprehending their dynamic response under varied MS and AWA ratios. |
| first_indexed | 2024-03-08T09:17:09Z |
| format | Article |
| id | doaj.art-678470c18f2c4a948dd8baed2debc2fd |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T09:17:09Z |
| publishDate | 2023-11-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-678470c18f2c4a948dd8baed2debc2fd2024-01-31T14:13:47ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582023-11-0141111414143110.30684/etj.2023.143193.1566181122Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater ConcreteDoha AlSaffar0Basil Al-Shathr1Suhair Abed2Civil Engineering Dept., Al- Iraqia University, Baghdad, 10053, Iraq.Civil Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.Ministry of Construction, Housing, Municipalities and Public Works, Building Research directorate, Baghdad, 10011, Iraq.This study investigates the dynamic properties of Reactive Powder Underwater Concrete (RPUWC), a novel composite integrating attributes of Reactive Powder Concrete and underwater cast concrete. The study focuses on assessing the impact resistance, dynamic modulus of elasticity, rigidity, and Poisson's ratio. The influence of micro steel fibers (MS) at different volume fractions (1%, 1.25%, and 1.5%) and different anti-washout admixture (AWA) dosages (0.5 %, 0.7%, and 0.9%) are examined. The findings indicate that increasing the MS content improves crack resistance and energy absorption, resulting in a substantial 155.6% enhancement in the first crack resistance when using 1.5% MS. Additionally, ultimate resistance improves by 158%. Furthermore, there are significant increases in the dynamic and modulus of rigidity as the MS percentage rises. The impact of AWA is rather limited, with a reduction in the dynamic modulus of 18.3% for 0.7% AWA and 30% for 0.9% AWA. Likewise, the modulus of rigidity decreases by 13% for 0.7% AWA and 23.9% for 0.9% AWA. Moreover, strong positive correlations between non-destructive testing (NDT) and ASTM C 215 equations are observed. This investigation addresses a significant knowledge gap, shedding light on optimizing underwater structures' performance by comprehending their dynamic response under varied MS and AWA ratios.https://etj.uotechnology.edu.iq/article_181122_84be1d36e57888c47741473c6a1fea45.pdfdynamic modulus of elasticity impact resistance underwater construction nondispersive concrete antiwashout admixture |
| spellingShingle | Doha AlSaffar Basil Al-Shathr Suhair Abed Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete Engineering and Technology Journal dynamic modulus of elasticity impact resistance underwater construction non dispersive concrete anti washout admixture |
| title | Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete |
| title_full | Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete |
| title_fullStr | Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete |
| title_full_unstemmed | Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete |
| title_short | Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete |
| title_sort | dynamic characterization assessment and optimization of reactive powder underwater concrete |
| topic | dynamic modulus of elasticity impact resistance underwater construction non dispersive concrete anti washout admixture |
| url | https://etj.uotechnology.edu.iq/article_181122_84be1d36e57888c47741473c6a1fea45.pdf |
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