The stormwater flows via the joints into the lightweight aggregate core concrete
When this storage layer is completely full, excess water seeps away via the subgrade
The rain run-off is cleaned in the joints and in the concrete
Following the rain event, the stored water evaporates into the atmosphere via the joint
Video: Operating principle
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
are also permitted for traffic
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
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
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
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.
Paving for load classes up to 3.2 according to RStO (Guidelines for the standardisation of the superstructures of traffic areas)
Cleaning function with DIBt approval
Permeability in new condition > 200 mm/h
Permanent permeability > 100 mm/h
Run-off co-efficient 0.0 possible
Hydraulic conductivity up to soil kf 1·10-6 m/s
Discharge via subgrade drainage is necessary in case of lower kf values
General building authority approval from the DIBt
Paving system gd-protect Z-84.1-13
Paving system hp-protect Z-84.1-14
Conforms to all rules for the paving construction method in Germany
Meets the requirements of the data sheet for seepage-capable traffic areas (MVV) of the FGSV (German Road and Transportation Research Association)
Meets the requirements of the DWA A 138
In-situ measurements available
Proof of the evaporation performance from in-situ measurements is available