Since the nitrogen oxide degradation rates achieved using standard commercial photocatalytic cement ( i.e. cement that reacts to solar radiation ) proved unsatisfactory, the company ultimately had to develop its own, more effective formula.
» We were able to verify the effectiveness of the optimized slabs in a variety of tests, « confi rms Herrchen.
During an extended time fi eld test, the scientist and her team recorded nitrogen oxide degradation rates of 20 to 30 percent in specially-created street canyons.
www.fraunhofer.deDa die Abbauraten von Stickoxid mit handelsüblich beziehbarem photokatalytisch aktivem Zement nicht ausreichend waren, musste die Firma F.C. Nüdling eine eigene, wirksamere Rezeptur entwickeln.
» In verschiedenen Tests konnten wir die Wirksamkeit der optimierten Steine belegen, « bestätigt Herrchen.
In eigens angelegten Straßenschluchten konnten über einen Messzeitraum von insgesamt 3 Tagen Stickoxid-Abbauraten von 20 bis 30 Prozent nachgewiesen werden.
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