The Effect of Nano–Micro Silica Mixture on the Shear Strength of Reinforced Concrete Beams
This paper examines the significance of nano silica and micro silica mixture on the shear strength of reinforced concrete beams. The nano and micro silica mixture was used as a partial replacement for Portland cement with different proportions to produce four (4) concrete mixtures. In this research,...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | Arabic |
| Published: |
Faculty of engineering, Tanta University
2022-01-01
|
| Series: | Journal of Engineering Research - Egypt |
| Subjects: | |
| Online Access: | https://erjeng.journals.ekb.eg/article_210204_331b9e2aa3a0baaaf74020af2eadf989.pdf |
| _version_ | 1797799129995280384 |
|---|---|
| author | Ehab Abd Al motalea A. Debaiky M. Taha |
| author_facet | Ehab Abd Al motalea A. Debaiky M. Taha |
| author_sort | Ehab Abd Al motalea |
| collection | DOAJ |
| description | This paper examines the significance of nano silica and micro silica mixture on the shear strength of reinforced concrete beams. The nano and micro silica mixture was used as a partial replacement for Portland cement with different proportions to produce four (4) concrete mixtures. In this research, the tests on fresh concrete mixtures (slump test, density test and air content test) were performed. The compressive strength of concrete mixtures was tested. The shear strength of reinforced concrete beams with and without shear reinforcement is examined. Moreover, the influence of the multi-sized silica mixture on other mechanical characteristics of concrete related to the shear behavior of concrete beams, shear crack width, the inclination angle of shear cracks and deflection were also examined. From test results, the mixture of 2% nano silica with 8% micro silica was found to lead to the highest compressive strength, it improve the concrete compressive strength up to 33% compared with control specimens. The shear strength of the concrete beam incorporating 8% micro silica and 2% nano silica mixture was also improved, it increased by 30% and 59 % for beams with and without steel stirrups, respectively. The significance of nano-micro silica mixture on the concrete contribution to the shear strength of reinforced concrete beams is examined. The nano-micro silica mixture increased concrete contribution to shear strength of reinforced concrete beams up to 17%. |
| first_indexed | 2024-03-13T04:14:21Z |
| format | Article |
| id | doaj.art-2926a413e8f54cdba0812bd2904bd141 |
| institution | Directory Open Access Journal |
| issn | 2356-9441 2735-4873 |
| language | Arabic |
| last_indexed | 2024-03-13T04:14:21Z |
| publishDate | 2022-01-01 |
| publisher | Faculty of engineering, Tanta University |
| record_format | Article |
| series | Journal of Engineering Research - Egypt |
| spelling | doaj.art-2926a413e8f54cdba0812bd2904bd1412023-06-21T06:47:12ZaraFaculty of engineering, Tanta UniversityJournal of Engineering Research - Egypt2356-94412735-48732022-01-0154839010.21608/erjeng.2021.109550.1042210204The Effect of Nano–Micro Silica Mixture on the Shear Strength of Reinforced Concrete BeamsEhab Abd Al motalea0A. Debaiky1M. Taha2CIVIL ENGINEERING, BENHA UNIVERSITY, BENHA, EGYPTCIVIL ENGINEERING, BENHA UNIVERSITY, BENHA, EGYPTDepartment of Civil, Construction and Environmental Engineering, The University of New Mexico, New Mexico, USAThis paper examines the significance of nano silica and micro silica mixture on the shear strength of reinforced concrete beams. The nano and micro silica mixture was used as a partial replacement for Portland cement with different proportions to produce four (4) concrete mixtures. In this research, the tests on fresh concrete mixtures (slump test, density test and air content test) were performed. The compressive strength of concrete mixtures was tested. The shear strength of reinforced concrete beams with and without shear reinforcement is examined. Moreover, the influence of the multi-sized silica mixture on other mechanical characteristics of concrete related to the shear behavior of concrete beams, shear crack width, the inclination angle of shear cracks and deflection were also examined. From test results, the mixture of 2% nano silica with 8% micro silica was found to lead to the highest compressive strength, it improve the concrete compressive strength up to 33% compared with control specimens. The shear strength of the concrete beam incorporating 8% micro silica and 2% nano silica mixture was also improved, it increased by 30% and 59 % for beams with and without steel stirrups, respectively. The significance of nano-micro silica mixture on the concrete contribution to the shear strength of reinforced concrete beams is examined. The nano-micro silica mixture increased concrete contribution to shear strength of reinforced concrete beams up to 17%.https://erjeng.journals.ekb.eg/article_210204_331b9e2aa3a0baaaf74020af2eadf989.pdfkeywords: shear strengthnano-silicamicro-silicaconcrete beams |
| spellingShingle | Ehab Abd Al motalea A. Debaiky M. Taha The Effect of Nano–Micro Silica Mixture on the Shear Strength of Reinforced Concrete Beams Journal of Engineering Research - Egypt keywords: shear strength nano-silica micro-silica concrete beams |
| title | The Effect of Nano–Micro Silica Mixture on the Shear Strength of Reinforced Concrete Beams |
| title_full | The Effect of Nano–Micro Silica Mixture on the Shear Strength of Reinforced Concrete Beams |
| title_fullStr | The Effect of Nano–Micro Silica Mixture on the Shear Strength of Reinforced Concrete Beams |
| title_full_unstemmed | The Effect of Nano–Micro Silica Mixture on the Shear Strength of Reinforced Concrete Beams |
| title_short | The Effect of Nano–Micro Silica Mixture on the Shear Strength of Reinforced Concrete Beams |
| title_sort | effect of nano micro silica mixture on the shear strength of reinforced concrete beams |
| topic | keywords: shear strength nano-silica micro-silica concrete beams |
| url | https://erjeng.journals.ekb.eg/article_210204_331b9e2aa3a0baaaf74020af2eadf989.pdf |
| work_keys_str_mv | AT ehababdalmotalea theeffectofnanomicrosilicamixtureontheshearstrengthofreinforcedconcretebeams AT adebaiky theeffectofnanomicrosilicamixtureontheshearstrengthofreinforcedconcretebeams AT mtaha theeffectofnanomicrosilicamixtureontheshearstrengthofreinforcedconcretebeams AT ehababdalmotalea effectofnanomicrosilicamixtureontheshearstrengthofreinforcedconcretebeams AT adebaiky effectofnanomicrosilicamixtureontheshearstrengthofreinforcedconcretebeams AT mtaha effectofnanomicrosilicamixtureontheshearstrengthofreinforcedconcretebeams |