LIFE CERSUDS  is a demonstration project that puts into practice, evaluates and publicises Sustainable Urban Drainage Systems (SuDS). 

Currently, work is being done on developing the system and implementing the project. The aim is to show the key characteristics of the ceramic system. It was necessary to design and check the different parts of the pavement through to ensure that it is up to demanding environment during its life span.

Now, this presentation describes the most relevant tests that defined the final characteristics of the ceramic SuDS. It was considered necessary to integrate them safely using an appopiate adhesive. This same adhesive would increase resistance as. Alternatively, the packaging would allow easy handling and improved installation efficiency. The proposed adhesive was a C2 adhesive according to UNE-EN 12004. The manufacturing process consisted of appplying the adhesive using 1.5 mm-thick templates cut with a laser.

The test of thickness was conducted based on standard UNE-EN 1344: 2015, consisting of exercising a progressive force at a constant velocity on the paving units, using a roller resting on their centrar area until they broke. It may be observed that from 40 mm thickness on, the values obtained were greater tha the required 80 N/mm2.  

To study the impact, the research was carried out based on the method  "Determination de la tenue au choc lourd des carreaux céramiques nono émaillés-choc à la bille de 510g" which consits of dropping a steel ball with a mass of 510 g in weight from a height of 80 cm. The test was carried out with paving units of various thickness and types of bodies.

The results indicate that with a strip height greater than 70 mm, deffects were minimised and barely visible.  For this reason, to be able to offer better guarantees, strip height was set at 75 mm.
From the obtained results we conclude that red paste glazed stoneware ofter a better impact resistance than the porcelain stoneware. 

For the determination of frost resistance, the paving units were impregnated under vacuum, with a depression of 400 mbar below atmospheric pressure. The vacuum at this pressure was maintained for 30 min. After this time, the paving units were completely covered with water for a period of about 45 minutes.

The paving units were then subjected to 100 freeze-thaw cycles and the ceramic material resisted the test. -For the determination of the value of slideng resistance, the sample was submerged in water for at least 30 minutes prior to the test. Each of the tiles was tested in two opposing directions (0º and 180º), their surfaces being saturated with distilled water. All results were satisfactory, obtaining values greater than 60º, so that the paving belongs to Class 3 according to CTE.

Finally, a ceramic system is proposed, involving permeable modules measuring 330x65x75 mm and weighing about 3.3 Kg. Each module is made up of seven ceramic strips obtained from tiles with a low commercial value. All of the tests to which the ceramic modules and paving system were subjected produced satisfactory results. This results indicate that the paving system proposed in the project can perform appropiately as a sustainable urban drainage system.
You can download the report in:  http://www.lifecersuds.eu/es/documentos