Modeling and measuring for the Hohenheimer Strasse model project in Stuttgart, Germany

Photocatalysis in concrete terms

Manufacturers of concrete products have been working with photocatalytically active surfaces for a number of years. In collaboration with HeidelbergCement AG, a software tool for quantitative assessment of the effectiveness of such surfaces at a specific location was developed. In a model project conducted by the city of Stuttgart, Germany, the possible effectiveness of photocatalytically active surfaces was simulated on Hohenheimer Strasse in Stuttgart. 


The photocatalytic process of degradation is modeled in analogy to deposition processes. The resistance model used is based on...

Related articles:

Issue 04/2010 Evironmentally Materials

Photocatalytic Concrete in Color

Products made of photocatalytic concrete are mainly achieved by cements that are doped with photocatalytic titanium dioxide, therefore only white and grey products are commonly available. There is...

Issue 02/2018 Clean cities by means of photocatalysis

Less nitrogen oxides, more beautiful surfaces

Compliance with the limits set by the EU for nitrogen oxides is still posing a challenge for cities and municipalities. Contrary to measures such as driving bans, which have a negative impact on...

Issue 09/2013

Air purification using concrete products manufactured with special cement

Nitrogen oxides (NOX) are one of the most critical groups of air pollutants in the vicinity of major urban roads. One of the options to reduce the concentration of these pollutants in the air we...

Issue 05/2009 Some observations regarding in-service performance

Photocatalytic paving block surfaces

In this study, interlocking paving blocks were used for the reconstruction of a street over a length of 500 meters. Results appear to confirm a reduction in photocatalytic activity due to the presence...

Issue 09/2013 Helio Clean/Dyckerhoff

Research project on nitrogen oxide reduction

From 2009 to 2012, the “Helio Clean” project funded by the Federal Ministry of Education and Research dealt with the catalytic disintegration of air pollutants under sunlight exposure using building...