45
july-august 2013
international
construction
MIXING TECHNOLOGY
Adding to the mix
>
Adding to the mix
W
hatever the output needs, manufacturers of mixing
plants are focussed improving efficiency, from
consumption to more options for mixing temperature
and recipes, new control systems and other environmental
considerations such as noise and fumes.
For instance, recycling old asphalt – also known as reclaimed
or recycled asphalt pavement (RAP) – is an absolute must in
the industry, according to Ammann. In fact, Ammann claims
to be the only manufacturer that can offer plant technology to
produce new asphalt from 100% RAP, and offers a variety of
technologies, depending on how much RAP is added to the mix.
It recommends adding cold RAP directly to the mix for
quantities of up to 30%, but offers a range of specially designed
drums for higher RAP rates up to 100%. The RAH 100 drum,
for instance, can handle up to 100% RAP.
Meanwhile, Ammann has also introduced a new asphalt
mixing plant, the Universal HRT, with increased use of recycled
materials in mind. Designed to cope with up to 60% RAP, the
plant features a fully integrated parallel drum directly above the
mixer for optimal material flow, and boasts an output capacity
of between 320 and 500 tonnes/hour.
Ammann claims to be the only
manufacturer that can offer plant
technology to produce new asphalt
from 100% recycled asphalt
pavement (RAP)
Marini’s new eTOWER asphalt plants can achieve recycling
rates of nearly 50%, with higher proportions possible
Increasing the use of recycled materials
is a key focus for the mixing technology
industry.
Helen Wright
reports.
