title: Self-cleaning and mechanical properties of modified white cement with nanostructured TiO2.
abstract: In the present study, self-cleaning and mechanical properties of white Portland cement by addition of commercial available TiO2 nanoparticles with the average particle size of 80 nm were investigated. X-ray diffraction (XRD), transmission electron microscopy (TEM) and BET were used to characterize TiO2 nanoparticles. For determination of self-cleaning properties of TiO2-modified white cement, colorimetric tests in decolorization of C.I. Basic Red 46 (BR46) in comparison to unmodified cement samples was applied. The results indicated that with increasing the amount of TiO2 nanoparticles in modified cement, self-cleaning property of the samples increased. The mechanical properties of TiO2-modified and unmodified cement samples, such as time of setting of hydraulic cement, compressive strength of hydraulic cement mortar and flexural strength of hydraulic cement mortar were examined. The results indicated that addition of TiO2 nanoparticles up to maximum replacement level of 1.0% improved compressive and flexural strength and decreased its setting time.
authors.affiliation: Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 5166614766 Tabriz, Iran.
authors.forename: R
authors.initials: R
authors.lastname: Khataee
authors.forename: V
authors.initials: V
authors.lastname: Heydari
authors.forename: L
authors.initials: L
authors.lastname: Moradkhannejhad
authors.forename: M
authors.initials: M
authors.lastname: Safarpour
authors.forename: S W
authors.initials: SW
authors.lastname: Joo
mesh_terms: D002484:Cementation / Q000379:methods*; D003252:Construction Materials; D003460:Crystallization / Q000379:methods*; D055119:Elastic Modulus; D006244:Hardness; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D046911:Macromolecular Substances; C009495:titanium dioxide; D014025:Titanium