Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mechanical, physicochemical, microstructural and self-cleaning performance of nano-titanium dioxide containing photocatalytic cement mortars exposed to elevated temperatures
In this study, the effect of thermal exposure on the mechanical, physicochemical, microstructural and self-cleaning properties of photocatalytic cement mortars was investigated. 1%, 2%, 3% and 4% of the ordinary Portland cement weight was replaced with nano-TiO2 particles. Mortars were heated at a rate of 2 °C/min to 200 °C, 400 °C, 500 °C, 600 °C, 700 °C and 800 °C. Compressive and flexural strengths, mass, water porosity, ultrasonic pulse velocity, optical microscopy, scanning electron microscopy, X-ray diffraction and thermogravimetric analysis tests were conducted before and after heating the mortars. The experimental results showed that nano-TiO2 particles have a significant influence on the residual properties of the mortars. The addition of TiO2 increased the resistance of the mortars to thermal deteriorations and preserved the residual mechanical, physicochemical and microstructural properties of the mortars. Additionally, for the first time, the influence of thermal exposure on the photocatalytic performance of cement composites was evaluated in this study by evaluating the degradation of rhodamine B. The photocatalytic performance was unaffected up to 400 °C, however, further heating deteriorated the photocatalytic performance of cement mortars.
Mechanical, physicochemical, microstructural and self-cleaning performance of nano-titanium dioxide containing photocatalytic cement mortars exposed to elevated temperatures
In this study, the effect of thermal exposure on the mechanical, physicochemical, microstructural and self-cleaning properties of photocatalytic cement mortars was investigated. 1%, 2%, 3% and 4% of the ordinary Portland cement weight was replaced with nano-TiO2 particles. Mortars were heated at a rate of 2 °C/min to 200 °C, 400 °C, 500 °C, 600 °C, 700 °C and 800 °C. Compressive and flexural strengths, mass, water porosity, ultrasonic pulse velocity, optical microscopy, scanning electron microscopy, X-ray diffraction and thermogravimetric analysis tests were conducted before and after heating the mortars. The experimental results showed that nano-TiO2 particles have a significant influence on the residual properties of the mortars. The addition of TiO2 increased the resistance of the mortars to thermal deteriorations and preserved the residual mechanical, physicochemical and microstructural properties of the mortars. Additionally, for the first time, the influence of thermal exposure on the photocatalytic performance of cement composites was evaluated in this study by evaluating the degradation of rhodamine B. The photocatalytic performance was unaffected up to 400 °C, however, further heating deteriorated the photocatalytic performance of cement mortars.
Mechanical, physicochemical, microstructural and self-cleaning performance of nano-titanium dioxide containing photocatalytic cement mortars exposed to elevated temperatures
Ullah, Zahid (Autor:in) / Kakar, Ehsanullah (Autor:in) / Qudoos, Abdul (Autor:in) / Rehman, Atta Ur (Autor:in)
European Journal of Environmental and Civil Engineering ; 26 ; 7103-7120
09.11.2022
18 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Behavior of blended cement mortars containing nano-metakaolin at elevated temperatures
| Online Contents | 2012
Behavior of blended cement mortars containing nano-metakaolin at elevated temperatures
| British Library Online Contents | 2012
Behavior of blended cement mortars containing nano-metakaolin at elevated temperatures
| British Library Online Contents | 2012