JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 45

Can carbon-reinforced concrete replace steel in the long run?

Dr.-Ing. Frank Schladitz
Dr.-Ing. Frank Schladitz MBA, is the representative of the executive board of the
C³ - Carbon Concrete Composite e.V. and
coordinates the research project on behalf of
TU Dresden. After completing his studies in
civil engineering, he spent five years planning
bridges before joining the Institute for Concrete Structures at TU Dresden.

Frank Schladitz: The
great challenges with regard to environmental protection, carbon
footprint reduction and resource
saving can only be mastered if the
construction industry is willing to
accept changes. The vision of C3
is to initiate a new era of building
design by using carbon reinforced
concrete and replacing steel in the
long term. Most of the concrete
used as a cover to protect steel
from corroding can be spared.
Carbon reinforced concrete offers new solutions. Whereas the
production of cement accounts
for 6.5% of global CO2 emissions,
three times the volume produced
by global aviation. The solution
is: carbon concrete. The use of
carbon concrete allows up to 80%

material savings.
Since the start of the C³-project in 2014, a lot has changed
for the better [4]. Six more admissions have been granted in
the last five years and all major
construction institutes have
started their research on carbon
reinforced concrete- before that,
only Aachen and Dresden were
engaged in this field. The project
made its way from research to
applications. Several companies
are developing their own products now and opt for innovative
construction solutions. One of
our 164 members, the construction company Goldbeck, covers
the entire process chain from
planning, design and support to
the finished building, offering

Dr.-Ing. Christian Kulas
Dr.-Ing. Christian Kulas is managing director at
Solidian GmbH, a leading producer of glass and
carbon reinforcements. After structural engineering studies in Konstanz, teaching activities
and an MBA at RWTH Aachen, je joined Solidian in
2013, where he was responsible for technical and
engineering parts. He was appointed managing
director in 2017.

JEC Composites Magazine:
What were Solidian's most
outstanding construction projects during the past years?

Christian Kulas.: We

handled many fascinating
projects, but the most outstanding one was probably the

cladding of the Bosphorus
bridge pylons in Istanbul at
an altitude of 320 metres. We
were in charge of providing a
technical solution and producing the glass/carbon reinforcements.
Without such an innova-

The world's longest bridge made from textile-reinforced
concrete (96.75 m) in Albstadt-Lautlingen ©Solidian

The first bridge ever made of carbon reinforced
concrete in Albstadt-Ebingen ©Solidian

turnkey solutions. In 2014, only
pedestrian bridges were made of
carbon reinforced concrete but
more and more road bridges can
now be expected. Saxony is planning a road bridge entirely made
of carbon reinforced concrete.
My plea to the industry: sustai-

nable companies that are heading
for a future-proof employer branding should commit themselves
to the carbon reinforced concrete
megatrend. C3 wants to lay the
foundation to replace at least 20%
of steel with carbon for the reinforcement of concrete by 2025.

tive material as textile-reinforced concrete, the façade
design of the pylons would
not have been technically
feasible. A maximum panel
weight of 110 kg/m² was
required for the façade panels geared to protect the
steel structure on the pylon
heads and for handling purposes at high altitudes. The
challenge was to build these
panels with a maximum dimension of 3.0 m x 4.5 m,
being only 30 mm thin.
Last but not least, we had
to struggle with huge wind
speeds at this height. But time
pressure was also an issue.
We managed the whole pro-

ject within four months, including the development of
technical solutions, the testing stage, and the production and shipping of 3000 m²
of reinforcements to Turkey.
A more recent example
for the application of carbon-reinforced concrete is
the new hospital in Solothurn
(Switzerland) that will be
completed in 2020.
The planners put a lot of emphasis on designing bright
and friendly rooms while
shielding the structure from
heat-inducing sun rays.
This was achieved through
the use of suspended elements, which also serve as

N°129 July - August 2019

/ jec composites magazine

45



JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019

Cover
Edito
Moving composites forward: on the shoulders of giant
Contents
NEWS
In brief
Successful partners
Agenda
BUSINESS
Matrix - CFRP composite manufacturing trends
Cost - A brand-new approach for economically competitive composites
MANUFACTURING
Fibre placement - Replacing individual unit tests by integrated process control
NDT - Optical metrology improves the production of composite products at every step
Initiative - Spotlights from the world of lightweighting
FEATURE SPORTS & LEISURE - The largest testing ground
Success story - DPS designs the world’s most advanced skis
Carbon - New type of unidirectional prepreg for sport applications with complex shapes
Additive manufacturing - lnnovative composite bicycle frame
Textile - Porcher lndustries: excellence in sports and leisure
Innovations - Sports on the scene at JEC World 2019
Carbon - The next generation of high-performance rigging
Standardisation - Research, innovation and development for composite marine and offshore applications
SOLUTIONS
Infrastructure - Can carbon-reinforced concrete replace steel in the long run?
Art - “Train your brain, think disruptive, outside the box and follow your visions!”
Music - Music instruments from carbon, glass or flax fibres
Watch - A watch ahead of its time
In the world - Composites visit the doctor
TECHNOLOGY
Ageing - Effects of ageing on the mechanical and structural properties of glass/epoxy composite pipes in seawater
Inside the lab - Advanced Composites Research Group – Queen’s University Belfast
Index
Advertisers
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 68
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Cover
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 2
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Edito
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Moving composites forward: on the shoulders of giant
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 5
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Contents
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 7
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - In brief
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 9
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Successful partners
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Agenda
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Matrix - CFRP composite manufacturing trends
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 13
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 14
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Cost - A brand-new approach for economically competitive composites
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 16
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 17
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 18
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Fibre placement - Replacing individual unit tests by integrated process control
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 20
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - NDT - Optical metrology improves the production of composite products at every step
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 22
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 23
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Initiative - Spotlights from the world of lightweighting
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 25
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 26
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Success story - DPS designs the world’s most advanced skis
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 28
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Carbon - New type of unidirectional prepreg for sport applications with complex shapes
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 30
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Additive manufacturing - lnnovative composite bicycle frame
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 32
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Textile - Porcher lndustries: excellence in sports and leisure
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 34
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 35
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Innovations - Sports on the scene at JEC World 2019
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 37
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Carbon - The next generation of high-performance rigging
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 39
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Standardisation - Research, innovation and development for composite marine and offshore applications
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 41
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 42
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Infrastructure - Can carbon-reinforced concrete replace steel in the long run?
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 44
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 45
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 46
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Art - “Train your brain, think disruptive, outside the box and follow your visions!”
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 48
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Music - Music instruments from carbon, glass or flax fibres
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 50
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 51
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Watch - A watch ahead of its time
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 53
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - In the world - Composites visit the doctor
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 55
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Ageing - Effects of ageing on the mechanical and structural properties of glass/epoxy composite pipes in seawater
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 57
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 58
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 59
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 60
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 61
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Inside the lab - Advanced Composites Research Group – Queen’s University Belfast
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 63
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 64
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 65
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - Advertisers
JEC COMPOSITES MAGAZINE - Issue #129 - July/August 2019 - 67
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