Photocatalytic Activity and Mechanical Properties of Cement Slurries Containing Titanium Dioxide
The effect of titanium dioxide (TiO<sub>2</sub>) on the mechanical properties of cement slurries including their benefits on air purification and abatement of pollutants is not well documented. Cementitious-based slurries are typically applied in thin layers as decorative coatings for ex...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/4/1046 |
| _version_ | 1797606108996567040 |
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| author | Yasmine Jabali Joseph Assaad Georges Aouad |
| author_facet | Yasmine Jabali Joseph Assaad Georges Aouad |
| author_sort | Yasmine Jabali |
| collection | DOAJ |
| description | The effect of titanium dioxide (TiO<sub>2</sub>) on the mechanical properties of cement slurries including their benefits on air purification and abatement of pollutants is not well documented. Cementitious-based slurries are typically applied in thin layers as decorative coatings for existing facades, protection against an ingress of aggressive ions, or rainproof covers to minimize water penetration. Different parameters including the TiO<sub>2</sub> concentration, dispersion time during batching, and applied thickness on top of existing mortar blocks are investigated in this paper. Tested properties included the flow, colorimetry, compressive/flexural strengths, bond to existing substrates, water absorption, and photocatalytic activity evaluated using an ISO 22197-1:2007 reactor. The results showed that the mechanical properties remarkably improved with TiO<sub>2</sub> additions, up to 8% of the cement mass. This was attributed to two concomitant phenomena including a micro-filler effect that enhances the packing density and nucleation sites to promote strength development. The removal of nitrogen oxides from the atmosphere reached 92% when the TiO<sub>2</sub> was added at a rate of 5% of the cement mass. Such data can be of particular interest to consultants and environmental activists searching for innovative materials capable of maintaining better ambient air quality in urban and modern cities. |
| first_indexed | 2024-03-11T05:10:39Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T05:10:39Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-fdb1cb3a2c9142c0a9f3e2c76785f64f2023-11-17T18:36:44ZengMDPI AGBuildings2075-53092023-04-01134104610.3390/buildings13041046Photocatalytic Activity and Mechanical Properties of Cement Slurries Containing Titanium DioxideYasmine Jabali0Joseph Assaad1Georges Aouad2Department of Civil and Environmental Engineering, University of Balamand, Al Koura, Tripoli P.O. Box 100, LebanonDepartment of Civil and Environmental Engineering, University of Balamand, Al Koura, Tripoli P.O. Box 100, LebanonCentre for Materials and Processes, IMT Nord Europe, Institut Mines-Télécom, F-59000 Lille, FranceThe effect of titanium dioxide (TiO<sub>2</sub>) on the mechanical properties of cement slurries including their benefits on air purification and abatement of pollutants is not well documented. Cementitious-based slurries are typically applied in thin layers as decorative coatings for existing facades, protection against an ingress of aggressive ions, or rainproof covers to minimize water penetration. Different parameters including the TiO<sub>2</sub> concentration, dispersion time during batching, and applied thickness on top of existing mortar blocks are investigated in this paper. Tested properties included the flow, colorimetry, compressive/flexural strengths, bond to existing substrates, water absorption, and photocatalytic activity evaluated using an ISO 22197-1:2007 reactor. The results showed that the mechanical properties remarkably improved with TiO<sub>2</sub> additions, up to 8% of the cement mass. This was attributed to two concomitant phenomena including a micro-filler effect that enhances the packing density and nucleation sites to promote strength development. The removal of nitrogen oxides from the atmosphere reached 92% when the TiO<sub>2</sub> was added at a rate of 5% of the cement mass. Such data can be of particular interest to consultants and environmental activists searching for innovative materials capable of maintaining better ambient air quality in urban and modern cities.https://www.mdpi.com/2075-5309/13/4/1046cement slurrytitanium dioxideNOx removalphotocatalytic activitymechanical properties |
| spellingShingle | Yasmine Jabali Joseph Assaad Georges Aouad Photocatalytic Activity and Mechanical Properties of Cement Slurries Containing Titanium Dioxide Buildings cement slurry titanium dioxide NOx removal photocatalytic activity mechanical properties |
| title | Photocatalytic Activity and Mechanical Properties of Cement Slurries Containing Titanium Dioxide |
| title_full | Photocatalytic Activity and Mechanical Properties of Cement Slurries Containing Titanium Dioxide |
| title_fullStr | Photocatalytic Activity and Mechanical Properties of Cement Slurries Containing Titanium Dioxide |
| title_full_unstemmed | Photocatalytic Activity and Mechanical Properties of Cement Slurries Containing Titanium Dioxide |
| title_short | Photocatalytic Activity and Mechanical Properties of Cement Slurries Containing Titanium Dioxide |
| title_sort | photocatalytic activity and mechanical properties of cement slurries containing titanium dioxide |
| topic | cement slurry titanium dioxide NOx removal photocatalytic activity mechanical properties |
| url | https://www.mdpi.com/2075-5309/13/4/1046 |
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