Merck

Self-cleaning and mechanical properties of modified white cement with nanostructured TiO2.

Journal of nanoscience and nanotechnology (2013-08-02)
R Khataee, V Heydari, L Moradkhannejhad, M Safarpour, S W Joo
RESUMO

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.

MATERIAIS
Número do produto
Marca
Descrição do produto

Titanium, IRMM®, certified reference material, 0.5 mm wire
Titanium, IRMM®, certified reference material, 0.5 mm foil
Sigma-Aldrich
Titanium, foil, thickness 2.0 mm, 99.7% trace metals basis
Sigma-Aldrich
Titanium, wire, diam. 1.0 mm, 99.99% trace metals basis
Sigma-Aldrich
Titanium, foil, thickness 0.127 mm, 99.7% trace metals basis
Sigma-Aldrich
Titanium, foil, thickness 0.025 mm, 99.98% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, mixture of rutile and anatase, nanoparticle, <250 nm particle size (DLS), paste, 53-57 wt. % in diethylene glycol monobutyl ether/ethylene glycol, 99.9% trace metals basis
Sigma-Aldrich
Titanium, wire, diam. 0.81 mm, 99.7% trace metals basis
Sigma-Aldrich
Titanium, wire, diam. 0.25 mm, 99.7% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, rutile, powder, <5 μm, ≥99.9% trace metals basis
Sigma-Aldrich
Titanium, crystalline, 5-10 mm, ≥99.99% trace metals basis (purity exclusive of Na and K content)
Sigma-Aldrich
Titanium(IV) oxide, rutile, ≥99.98% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, rutile, 99.995% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, mixture of rutile and anatase, nanoparticles, <150 nm particle size (volume distribution, DLS), dispersion, 40 wt. % in H2O, 99.5% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, rutile, nanopowder, <100 nm particle size, 99.5% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, mixture of rutile and anatase, nanopowder, <100 nm particle size (BET), 99.5% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, rutile, <110>, single crystal substrate, ≥99.9% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm
Sigma-Aldrich
Titanium(IV) oxide, rutile, <001>, (single crystal substrate), ≥99.9% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm
Sigma-Aldrich
Titanium, foil, thickness 0.127 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Titanium, nanoparticles, dispersion, <100 nm particle size, in mineral oil, 98.5% trace metals basis
Sigma-Aldrich
Titanium, wire, diam. 2.0 mm, 99.99% trace metals basis
Sigma-Aldrich
Titanium, foil, thickness 0.1 mm, 99.99% trace metals basis
Sigma-Aldrich
Titanium, foil, thickness 0.5 mm, 99.99% trace metals basis
Sigma-Aldrich
Titanium, wire, diam. 0.5 mm, 99.99% trace metals basis
Sigma-Aldrich
Titanium(IV) oxide, anatase, powder, −325 mesh, ≥99% trace metals basis
Sigma-Aldrich
Titanium, powder, <45 μm avg. part. size, 99.98% trace metals basis
Sigma-Aldrich
Titanium, powder, −100 mesh, 99.7% trace metals basis
Sigma-Aldrich
Titanium, evaporation slug, diam. × L 6.3 mm × 6.3 mm, ≥99.99% trace metals basis
Sigma-Aldrich
Titanium, sponge, 3-19 mm, 99.5% trace metals basis
Sigma-Aldrich
Titanium, foil, thickness 0.25 mm, 99.99% trace metals basis