Accéder au contenu
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
PMID23901537
RÉSUMÉ

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.

MATÉRIAUX
Référence du produit
Marque
Description du produit
718467
Sigma-Aldrich
Oxyde de titane(IV), nanopowder, 21 nm primary particle size (TEM), ≥99.5% trace metals basis
637254
Sigma-Aldrich
Oxyde de titane(IV), anatase, nanopowder, <25 nm particle size, 99.7% trace metals basis
14027
Sigma-Aldrich
Oxyde de titane(IV), puriss., meets analytical specification of Ph. Eur., BP, USP, 99-100.5%
232033
Sigma-Aldrich
Oxyde de titane(IV), anatase, powder, 99.8% trace metals basis
14021
Sigma-Aldrich
Oxyde de titane(IV), ReagentPlus®, ≥99%
224227
Sigma-Aldrich
Titanium(IV) oxide, rutile, powder, <5 μm, ≥99.9% trace metals basis
248576
Sigma-Aldrich
Oxyde de titane(IV), anatase, powder, −325 mesh, ≥99% trace metals basis
637262
Sigma-Aldrich
Titanium(IV) oxide, rutile, nanopowder, <100 nm particle size, 99.5% trace metals basis
634662
Sigma-Aldrich
Titanium(IV) oxide, mixture of rutile and anatase, nanopowder, <100 nm particle size (BET), 99.5% trace metals basis
348791
Sigma-Aldrich
Titanium, foil, thickness 0.127 mm, 99.7% trace metals basis
366994
Sigma-Aldrich
Titanium, powder, <45 μm avg. part. size, 99.98% trace metals basis
267503
Sigma-Aldrich
Titanium, foil, thickness 0.25 mm, 99.7% trace metals basis
700347
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
268496
Sigma-Aldrich
Titanium, powder, −100 mesh, 99.7% trace metals basis
204757
Sigma-Aldrich
Titanium(IV) oxide, rutile, ≥99.98% trace metals basis
204730
Sigma-Aldrich
Titanium(IV) oxide, rutile, 99.995% trace metals basis
677469
Sigma-Aldrich
Oxyde de titane(IV), contains 1% Mn as dopant, nanopowder, <100 nm particle size (BET), ≥97%
268526
Sigma-Aldrich
Titanium, sponge, 1-20 mm, 99.5% trace metals basis
460400
Sigma-Aldrich
Titanium, wire, diam. 0.25 mm, 99.7% trace metals basis
369489
Sigma-Aldrich
Titanium, foil, thickness 2.0 mm, 99.7% trace metals basis
348848
Sigma-Aldrich
Titanium, foil, thickness 0.025 mm, 99.98% trace metals basis
348805
Sigma-Aldrich
Titanium, foil, thickness 0.5 mm, 99.99% trace metals basis
767506
Sigma-Aldrich
Titanium, sputtering target, diam. × thickness 2.00 in. × 0.25 in., 99.995% trace metals basis
460397
Sigma-Aldrich
Titanium, foil, thickness 0.127 mm, ≥99.99% trace metals basis
266035
Sigma-Aldrich
Titanium, wire, diam. 1.0 mm, 99.99% trace metals basis
635057
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
267481
Sigma-Aldrich
Titanium, foil, thickness 0.25 mm, 99.99% trace metals basis
305812
Sigma-Aldrich
Titanium, 5-10 mm, ≥99.99% trace metals basis (purity exclusive of Na and K content)
348864
Sigma-Aldrich
Titanium, wire, diam. 0.5 mm, 99.99% trace metals basis
267902
Sigma-Aldrich
Titanium, wire, diam. 0.81 mm, 99.7% trace metals basis