Bio-mechanical efficacy for slag/fly ash-based geopolymer mingled with mesoporous NiO
The main target of this research is the fabrication of pre-cast/self-cleaning eco-friendly building materials with adequate mechanical properties to be used in constructions exposed to bacteria, such as hospitals, to prevent the spread of epidemics and diseases. The impact of different doses of meso...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
|
| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523004631 |
| _version_ | 1797454622555635712 |
|---|---|
| author | Alaa Mohsen Mohamed Kohail Yousef R. Alharbi Aref A. Abadel Ahmed M. Soliman M. Ramadan |
| author_facet | Alaa Mohsen Mohamed Kohail Yousef R. Alharbi Aref A. Abadel Ahmed M. Soliman M. Ramadan |
| author_sort | Alaa Mohsen |
| collection | DOAJ |
| description | The main target of this research is the fabrication of pre-cast/self-cleaning eco-friendly building materials with adequate mechanical properties to be used in constructions exposed to bacteria, such as hospitals, to prevent the spread of epidemics and diseases. The impact of different doses of mesoporous NiO (MP-NiO) on the compressive strength value of 50 wt%slag+ 50 wt%fly-ash geopolymer paste was studied at different curing regimes. At 28-days of normal curing, the strength values for the modified pastes containing 0%, 0.5%, 1%, and 2% MP-NiO were 47, 62.4, 65.9 and 58.5 MPa, respectively, while these values completely changed under hydrothermal treatment to become 98.6, 104.8, 105.6 and 100.8 MPa, respectively at 6bars for 4hrs. XRD, TGA/DTG, and SEM techniques affirmed the dual effect of MP-NiO and hydrothermal curing in the production of CSHs, CAHs, CASHs, zeolitic phases, nickel-aluminate spinel (NiAl2O4) and calcium-nickel-silicate (CaNiSi2O6) that reinforced the internal microstructure. The self-cleaning test was conducted via the agar diffusion method. High bacterial resistivity was observed in the cases of discs containing 1% mesoporous NiO, whatever the curing conditions, as these discs strongly resisted the growth of Salmonella, K.Pneumonia, and E. Faecalis and the measured inhibition zones around normally cured discs were 44 ± 1, 44 ± 1, and 52 ± 2, respectively while the measured inhibition zones around autoclaved discs were 45 ± 1, 43 ± 1, and 48 ± 2, respectively. |
| first_indexed | 2024-03-09T15:39:48Z |
| format | Article |
| id | doaj.art-55493547dc9d49d5aa7c6ae8786fdb83 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:39:48Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-55493547dc9d49d5aa7c6ae8786fdb832023-11-25T04:48:08ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02283Bio-mechanical efficacy for slag/fly ash-based geopolymer mingled with mesoporous NiOAlaa Mohsen0Mohamed Kohail1Yousef R. Alharbi2Aref A. Abadel3Ahmed M. Soliman4M. Ramadan5Faculty of Engineering, Ain Shams University, Cairo, EgyptStructural Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, EgyptDepartment of Civil Engineering, College of Engineering, King Saud University, P.O.Box 800, Riyadh 11421, Saudi ArabiaDepartment of Civil Engineering, College of Engineering, King Saud University, P.O.Box 800, Riyadh 11421, Saudi ArabiaDepartment of Building, Civil and Environmental Engineering, Concordia University, CanadaChemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt; Corresponding author.The main target of this research is the fabrication of pre-cast/self-cleaning eco-friendly building materials with adequate mechanical properties to be used in constructions exposed to bacteria, such as hospitals, to prevent the spread of epidemics and diseases. The impact of different doses of mesoporous NiO (MP-NiO) on the compressive strength value of 50 wt%slag+ 50 wt%fly-ash geopolymer paste was studied at different curing regimes. At 28-days of normal curing, the strength values for the modified pastes containing 0%, 0.5%, 1%, and 2% MP-NiO were 47, 62.4, 65.9 and 58.5 MPa, respectively, while these values completely changed under hydrothermal treatment to become 98.6, 104.8, 105.6 and 100.8 MPa, respectively at 6bars for 4hrs. XRD, TGA/DTG, and SEM techniques affirmed the dual effect of MP-NiO and hydrothermal curing in the production of CSHs, CAHs, CASHs, zeolitic phases, nickel-aluminate spinel (NiAl2O4) and calcium-nickel-silicate (CaNiSi2O6) that reinforced the internal microstructure. The self-cleaning test was conducted via the agar diffusion method. High bacterial resistivity was observed in the cases of discs containing 1% mesoporous NiO, whatever the curing conditions, as these discs strongly resisted the growth of Salmonella, K.Pneumonia, and E. Faecalis and the measured inhibition zones around normally cured discs were 44 ± 1, 44 ± 1, and 52 ± 2, respectively while the measured inhibition zones around autoclaved discs were 45 ± 1, 43 ± 1, and 48 ± 2, respectively.http://www.sciencedirect.com/science/article/pii/S2214509523004631GeopolymerMesoporous NiOHydrothermal curingMechanical propertiesAnti-bacterial activity |
| spellingShingle | Alaa Mohsen Mohamed Kohail Yousef R. Alharbi Aref A. Abadel Ahmed M. Soliman M. Ramadan Bio-mechanical efficacy for slag/fly ash-based geopolymer mingled with mesoporous NiO Case Studies in Construction Materials Geopolymer Mesoporous NiO Hydrothermal curing Mechanical properties Anti-bacterial activity |
| title | Bio-mechanical efficacy for slag/fly ash-based geopolymer mingled with mesoporous NiO |
| title_full | Bio-mechanical efficacy for slag/fly ash-based geopolymer mingled with mesoporous NiO |
| title_fullStr | Bio-mechanical efficacy for slag/fly ash-based geopolymer mingled with mesoporous NiO |
| title_full_unstemmed | Bio-mechanical efficacy for slag/fly ash-based geopolymer mingled with mesoporous NiO |
| title_short | Bio-mechanical efficacy for slag/fly ash-based geopolymer mingled with mesoporous NiO |
| title_sort | bio mechanical efficacy for slag fly ash based geopolymer mingled with mesoporous nio |
| topic | Geopolymer Mesoporous NiO Hydrothermal curing Mechanical properties Anti-bacterial activity |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523004631 |
| work_keys_str_mv | AT alaamohsen biomechanicalefficacyforslagflyashbasedgeopolymermingledwithmesoporousnio AT mohamedkohail biomechanicalefficacyforslagflyashbasedgeopolymermingledwithmesoporousnio AT yousefralharbi biomechanicalefficacyforslagflyashbasedgeopolymermingledwithmesoporousnio AT arefaabadel biomechanicalefficacyforslagflyashbasedgeopolymermingledwithmesoporousnio AT ahmedmsoliman biomechanicalefficacyforslagflyashbasedgeopolymermingledwithmesoporousnio AT mramadan biomechanicalefficacyforslagflyashbasedgeopolymermingledwithmesoporousnio |