Water-permeable pavings from the ECOSAVE protect line carry a DIBt approval as a stormwater treatment plant.
This means that the tested systems are capable of
filtering, converting and /or degrading ecologically
risky pollutants so that our bodies of water including
groundwater can be protected.Therefore, the
pavements
are also permitted for traffic
areas on
which conventional eco-pavings are taboo today.
This means traffic areas such as residential streets,
car and lorry car parks or yard and commercial areas
with more than 300 vehicle movements daily. These
areas must in any case be paved for use by traffic.
With ECOSAVE protect it is now possible to treat
stormwater decentrally in these sensitive areas in
keeping with water protection - in other words, to
simply let it seep away.
The stormwater flows via the joints or the porous
concrete stones into the substrate. In the new
condition
the permeability of the systems must
be higher than 540 l/(sxha) – much more than any
stormwater or mixed water sewer can accept.
The pollutants are mainly collected in the top two
centimetres
of the joint material.
The seepage capacity reduces over the course
of time. Therefore, the pavements must be regenerated
after about 10 to 15 years using a suitable
cleaning method. A large part of the pollutants is
removed
and disposed of in the process.The top
two centimetres of the joint are renewed.
A special hybrid stone can do much more than this.
It stores the stormwater in a lightweight aggregate
concrete storage layer. The facing concrete layer of
the concrete stone is impermeable; the water only
penetrates into the concrete stone via the joints. Up
to 10 mm precipitation are stored intermediately and
given off to the atmosphere again after the rain
event. Only excess water is seeped. Annual evaporation
rates of up to 50% can thus be attained.
The green surface for road traffic.