Analysis of the Mechanical Performance of High-Strength Nano-Modified Cement Mortars for Overlays
Abstract
:1. Introduction
2. Materials and Methods
2.1. Floor Model Element—Preparation and Materials
2.2. Strength Properties
2.3. Adhesive Properties
2.4. Functional Properties
2.4.1. Abrasion
2.4.2. Subsurface Tensile Strength of the Overlay
2.5. Mechanical Performance Analysis
3. Results and Discussion
4. Conclusions
- If the overlay is a finishing layer, the optimal amount of addition is 0.5% of SiO2 and 1% of TiO2 nanoparticles, regardless of whether the overlay is bonded to the substrate, on the separating layer, or on the thermal insulation layer;
- In the case of the addition of Al2O3 nanoparticles, the optimal amount of the addition is 1.5% if the overlay is a finishing layer and it is on a separating layer, 1% when the overlay is bonded to the substrate, and 1.5% on the thermal insulation layer;
- In a situation where the overlay is a base for the finishing layer, the optimal amount of addition is 1% of TiO2 and 0.5% of SiO2 nanoparticles, regardless of whether the overlay is bonded to the substrate, on the separating layer, or on the thermal insulation layer;
- In the case of the addition of Al2O3 nanoparticles, the optimal amount of the addition is 1.5% if the overlay is a base for the finishing layer and it is on separating layer, 1.5% when the overlay is bonded to the substrate, and 1% on the thermal insulation layer.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Principal Properties of Cementitious Overlays | Mechanical Performance Class | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Strength properties | Compressive strength [MPa] | ||||||||||||
C5 | C7 | C12 | C16 | C20 | C25 | C30 | C35 | C40 | C50 | C60 | C70 | C80 | |
Tensile strength [MPa] | |||||||||||||
F1 | F2 | F3 | F4 | F5 | F6 | F7 | F10 | F15 | F20 | F30 | F40 | F50 | |
Adhesive properties | Pull-off adhesion between overlay and substrate [MPa] | ||||||||||||
B0.2 | B0.5 | B1.0 | B1.5 | B2.0 | |||||||||
Functional properties | Abrasion resistance (cm3/50 cm2) | ||||||||||||
A22 | A15 | A12 | A9 | A6 | A3 | A1.5 | |||||||
Subsurface tensile strength [MPa] | |||||||||||||
H0.2 | H0.5 | H1.0 | H1.5 | H2.0 |
Floor Variant | Principal Properties of Cementitious Overlays in Terms of Their Mechanical Performance | ||||
---|---|---|---|---|---|
Strength Properties | Adhesive Properties | Functional Properties | |||
Compressive Strength | Tensile Strength | Pull-Off Adhesion between Overlay and Substrate | Abrasion | Subsurface Tensile Strength | |
The overlay is the finish floor | |||||
On concrete substrate | ◌ | ◌ | ● | ● | O |
On separation layer | ◌ | ◌ | - | ● | O |
On the insulation layer | ◌ | ● | - | ● | O |
The overlay is the substrate for the finish floor | |||||
On concrete substrate | O | ◌ | ● | - | ● |
On separation layer | O | ◌ | - | - | ● |
On the insulation layer | O | ● | - | - | ● |
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Szymanowski, J.; Sadowski, Ł. Analysis of the Mechanical Performance of High-Strength Nano-Modified Cement Mortars for Overlays. Buildings 2024, 14, 248. https://doi.org/10.3390/buildings14010248
Szymanowski J, Sadowski Ł. Analysis of the Mechanical Performance of High-Strength Nano-Modified Cement Mortars for Overlays. Buildings. 2024; 14(1):248. https://doi.org/10.3390/buildings14010248
Chicago/Turabian StyleSzymanowski, Jacek, and Łukasz Sadowski. 2024. "Analysis of the Mechanical Performance of High-Strength Nano-Modified Cement Mortars for Overlays" Buildings 14, no. 1: 248. https://doi.org/10.3390/buildings14010248