earth-science-2019-keynote

8 / 9

Earth Science 2019 Journal of EnvironmentalWaste Management and Recycling | Volume 2
Page 31
May 22-23, 2019 | Rome, Italy
EARTH SCIENCE,
RECYCLING & SPACE TECHNOLOGY
7th International Conference on OF EXCELLENCE
IN INTERNATIONAL
MEETINGS
YEARS
RECYCLING-THE UNDERESTIMATED
CHALLENGE
Construction is impossible without building materials. Thus, a building
material history can be written parallel to the construction history. The
first building materials were not or only mechanically modified natural ma-
terials with limited design and low structural engineering potential. Today
building materials are needed, which are continuously developed driven by
quality and environmental requirements. The innovative nature of the build-
ing materials industry is demonstrated by R&D spending, which mainly re-
lates to process innovations and product innovations. An increase in both
the number and the complexity of the building materials can be observed.
The last life cycle phase, the recyclability, i.e. the potential for circulation is not
considered and only used in some cases as a product feature. The traditional
materials concrete and reinforced concrete are easy to recycle. After process-
ing, they can be used as recycled aggregates or as road building materials.
However, additional components or recipe developments may decrease the
good recyclability. As examples very fine-grained concretes or concrete with
fiber reinforcement can be named. Masonry materials like clay brick, calcium
silica brick or aerated autoclaved concrete, which are the main constituents
of masonry rubble, are the real challenge for the recycling today. Either these
material mixtures will be sorted by sensor based techniques. Then the sorted
materials can be used as partial substitute of the rawmaterial for the original
products or with respect to their special properties. As alternative possibility
the unsorted mixture can be used as raw material for the manufacturing of
lightweight aggregates by means of a thermal process. These aggregates can
replace natural lightweight materials like pumice.
Anette Mueller, J Environ Waste Management and Recycling 2019, Volume 2
Anette Mueller was worked as Full Professor for
“Processing and Re-Use of Building Materials”
during 1995–2011. She worked as a Senior Scien-
tist at the IAB Weimar Institute of Applied Con-
struction Research since 2011. She was the Vis-
iting Professor at the University of Illinois Urba-
na-Champaign, US in 2001 and at the University
of Sao Paulo in 2015. Her basic research projects
and a large number of applied research projects
had been proposed and processed during the
time as Full Professor. Her Recent research ac-
tivities in the field of recycling of Construction
and Demolition Waste are Recycling of hetero-
geneous recycled aggregates as raw material of
lightweight aggregates; Carbonisation as tool
to improve the properties of recycled concrete
aggregates; Microwaves as tool for the liberation
of connected building materials; Liberation and
sorting of masonry rubble and Gypsum in Con-
struction and Demolition Waste. She has more
than 300 scientific articles in international and
national scientific journals.
Anette Mueller
IABG GmbH, Germany
BIOGRAPHY
Keynote Forum | Day 2