ecoGranic®: concrete decontaminating pavement
What is ecoGranic®?
ecoGranic® is a technology developed and patented by PVT, implemented in a high resistance concrete prefabricated. In addition to compelling its architectonical and esthetical function, it actively contributes to the elimination of atmospheric pollutants.
This technology is very efficient in the elimination of nitrogen oxides (NOx), volatile organic compounds (VOCs) and particulate matter (PM). This prefabricated product is environmentally friendly. It is produced with recycled materials, among others, especially from construction and industrial sectors.
How does it work?
ecoGranic combats pollution through a process similar to the photosynthesis of the plants.
ecoGranic is made in two layers. Attending to the composition and thickness of the surface layer, it guarantees a high decontaminating efficiency during more than 25 years, in spite of the usual abrasion processes. It turns damaging gases into harmless compounds for human health and environment, through a natural oxidation process, chemical agents free and with an endless effect in time.
How is the efficiency tested?
The different tests to which ecoGranic is subjected demonstrate high efficiency in the elimination of contaminating elements such as nitrogen oxides (NOx), volatile organic compounds (VOCs) and particulate matter (PM).
At lab scales, ecoGranic tests show a high efficiency in the elimination of NOx, VOCs and PM. In the case of nitrogeno oxides (NOx) the tests have been performed according to the European ISO 22197-1:2007 and Spanish 127197-1:2013 normatives, where ecoGranic has been classified as Class 3, the highest classification. Regarding to volatile organic compounds (VOCs), the test have been run following the standards ISO 22197-2,3,4:2007 and AFNOR XP B44-013, obtaining a high elimination power for these pollutants.
In situ tests
However, it is in in-situ studies, carried out in finished works, where ecoGranic shows its real efficiency. Since the first study, realized in the year 2009, hundreds of measurements have confirmed a mean reduction about 60% in NOx levels.
The repetition of this tests in the works after more than 5 years, have shown the maintenance of the decontaminating function.
If the surface of a football field was paved with this product, the pollution generated by more than 4.000 vehicles per year would be eliminated.
Decontaminating power. Amount of NOx degradation
The amount of NOx degraded in 1 hour by ecoGranic in 1 m2 is 78 mg / m2 (= 0.078 g / m2)
Models and formats
PVT manufactures ecoGranic® in multitude of sizes and formats of paving stones and slabs, garden pieces, curbs, steps, technical and accessibility solutions. And if you do not find what you’re looking for, we’re able to create it.
Finishes and colours
We offer a multitude of finishes for ecoGranic® products. Different textures and a wide range of colors combinable with each other. We are sure that we have the finish you are looking for for your project.
Heatlh and saving
ecoGranic use has important benefits for health and the environment, and the consequent savings in public health.
Advantages against other pavements
La utilización de ecoGranic ofrece multitud de ventajas tanto técnicas como medioambientales.
Advantages over continuous pavements
Easy reposition and maintenance turns ecoGranic into a very suitable pavement in our cities, where most of the services go always on the sidewalks. Moreover, it offers excellet architectonic and esthetical alternatives.
Advantages over ceramic pavements
Dimensional uniformity and the largest range of sizes and thickness, turns ecoGranic into the ideal peavement for all kina of uses: pedestrian, mixed or traffic.
Advantages over natural pavements
ecoGranic offers multiple solutions of colours and shapes with high anti-slipperformances, and with a high adverse climatology resistance. All this advantages, with lower acquisition, installation and planet erosion costs.
Ventajas frente a los pavimentos con cemento fotocatalítico
La tecnología ecoGranic no está basada en cementos aditivados, sino que es una formula patentada que se incorpora a la capa superior de las baldosas de 7 a 12 mm de espesor y que garantiza una máxima y permanente efectividad. Por el contrario, los productos fabricados con cementos aditivados no pueden garantizar su capacidad descontaminante puesto que el cemento es un elemento fundamental del hormigón, estando definida su dosificación y no pudiendo ser modificada para alcanzar la capacidad descontaminante deseada. Además los precios de los cementos fotocatalíticos son muy elevados, por lo que su utilización obligaría a precios fuera de mercado o reducción en la dosificación y por tanto en su efectividad.
Ventajas frente a los pavimentos con TiO2 comercial
ecoGranic utiliza catalizadores que, debidamente sintetizados mediante dopaje, consiguen amplificar el efecto de la radiación solar. El TiO2 comercial se activa con radiación UV (<420 nm, 5% de la radiación solar), mientras que los productos ecoGranic® se activan con radiación UV y visible (420-740 nm, 45% de la radiación solar).
Ventajas frente a spray o imprimaciones fotocatalíticas
ecoGranic forma parte de la pieza. Por el contrario en los sprays o imprimaciones la duración descontaminante en el tiempo está muy limitada. Los pavimentos están sometidos a habituales procesos de erosión y abrasión debido al transito de peatones, tráfico, etc. Dicho desgaste elimina en poco tiempo cualquier película con propiedades fotocatalíticas aplicada sobre el pavimento.
How long does the effect last?
The thickness of the active layer, between 7 and 12 mm, guarantees the decontaminating activity during more than 25 years, in spite of usual abrasion processes.
Does every colour have the same efficiency?
Every ecoGranic slab has decontaminating activity; however pieces with Light colours show a higher efficiency.
Does ecoGranic® uses present any contraindication?
No, it does not. Controls and tests carried out show that far from having any adverse effect, the offer even better mechanical performances than traditional pavements.
What are the ways to test the efficiency?
At laboratory there are European and Spanish normative, ISO 22197-1:2007 and UNE 127197-1:2013, respectively, that regulate the tests to measure nitrogen oxides (NOx) degradation. In parallel, PVT offers the possibility of carrying our in situ studies after the installation of each work.
Is this product protected?
These decontamination pavements production is properly protected by a patent since the 10th of December of 2008, current in Europe and USA.
What is ecoGranic® price?
ecoGranic price varies according to the model, format, thickness and finish, that is in the line of quality pavements.