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Main Title: Photocatalytic Activity and Mechanical Properties of Cements Modified with TiO2/N
Author(s): Janus, Magdalena
Mądraszewski, Szymon
Zając, Kamila
Kusiak-Nejman, Ewelina
Morawski, Antoni W.
Stephan, Dietmar
Type: Article
Language Code: en
Abstract: In this paper, studies of the mechanical properties and photocatalytic activity of new photoactive cement mortars are presented. The new building materials were obtained by the addition of 1, 3, and 5 wt % (based on the cement content) of nitrogen-modified titanium dioxide (TiO2/N) to the cement matrix. Photocatalytic active cement mortars were characterized by measuring the flexural and the compressive strength, the hydration heat, the zeta potential of the fresh state, and the initial and final setting time. Their photocatalytic activity was tested during NOx decomposition. The studies showed that TiO2/N gives the photoactivity of cement mortars during air purification with an additional positive effect on the mechanical properties of the hardened mortars. The addition of TiO2/N into the cement shortened the initial and final setting time, which was distinctly observed using 5 wt % of the photocatalyst in the cement matrix.
Issue Date: 14-Nov-2019
Date Available: 10-Jan-2020
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): photoactive cement
NOx decomposition
mechanical properties
Journal Title: Materials
Publisher: MDPI
Publisher Place: Basel
Volume: 12
Issue: 22
Article Number: 3756
Publisher DOI: 10.3390/ma12223756
EISSN: 1996-1944
Appears in Collections:FG Baustoffe und Bauchemie » Publications

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