region, hhbc-consulting and WPE DK were
invited as guests to discuss possible
rehabilitation and protection of river banks
and bridges. Due to climate change, especially
in the mountainous regions, the streams and
rivers are flooded with enormous amounts
of water as a result of enormous amounts of
rain and continuous snow melt. In addition
to the water flowing at high speed, ever
greater quantities of debris are also being
transported. Water and debris are increasingly
damaging bank and bridge structures. For the
most part, they are not designed for these
quantities.
One of the main points of this discussion,
was the rehabilitation of the massive damage
caused by scree and water masses on the
construction of the riverbanks, especially in
areas of river diversion and river guidance
in villages and towns.
Particularly the rising water masses among
other things by massive lasting rains and
resulting high flow velocities with scree
movements give rise to concern.
the use of UHPC Ultra High Performance
Concrete as a refurbishment material and as
construction material for renewed protective
installation was discussed.
UHPC concrete would offer concrete with its
extreme strength (over 140 MPa - 240 MPa),
very high wear resistance and extremely high
corrosion resistance.
In addition, a joint-free processing is possible.
Due to these characteristics, the design of river
banks and river diversions with artificial rock
constructions made of UHPC was discussed.
As assembly methods for UHPC, assembly
pre-fabricated elements, casting or spray-on-site
(Shotcrete) assembly was discussed.
Since UHPC develop within 48 hours 70% of its
nominal strength are very fast in assembly methods
and thus the repair time is very short.
offshore and coastal areas, first projects have
been agreed.
