Cercetări experimentale privind influenţa nanoparticulelor de TiO2 asupra proprietăţilor fizico-mecanice ale compozitelor cementoase

Elvira Grebenişan, Andreea Hegyi, Adrian-Victor Lăzărescu

Rezumat/Abstract. Urban constructions are subject to deterioration and degradation due to the action of external factors, pollutants from air, water, compounds resulting from the combustion of fuels used for heating and transport, etc. currently, worldwide, the possibility of building cementitious composite materials with self-cleaning properties is reported due to the photocatalytic capacity of TiO2 nanoparticles, used as an addition or as a substitute for a part of cement. The aim of this paper is to present experimental research on the influence of the introduction of titanium dioxide nanoparticles (TiO2) on some physico-mechanical properties of cementitious composites. Experimental research has been carried out on cementitious composite material containing TiO2 nanoparticles, respectively, the evolution of the following parameters was analyzed: outlet time, apparent density, absolute density, porosity, water absorption, water absorption by capillarity and white degree. The main objective of this study was to analyze the influence of the presence of titanium dioxide (TiO2) nanoparticles on the physico-mechanical properties of cementitious composites.

Cuvinte cheie/Key words: TiO2 nanoparticles, physico-mechanical properties, self-cleaning composites

Text integral/Full text