Styrene-Butadiene-Styrene polymer modified bitumen: A review on compatibility and physico-chemical properties
Physica Scripta,
Год журнала:
2024,
Номер
99(12), С. 122001 - 122001
Опубликована: Ноя. 11, 2024
Abstract
The
triblock
elastomeric
copolymer
Styrene-Butadiene-Styrene
(SBS)
improves
the
engineering
properties
of
bitumen
and
performance
parameters
flexible
pavements.
Although
research
investigations
have
been
conducted
worldwide,
literature
lacks
a
comprehensive
review
to
provide
up-to-date
status
in
this
field.
current
summarizes
findings
on
compatibility,
stability,
physical
properties,
microscopic
characterization,
chemical
characterization
SBS
modified
bitumen.
Quantitative
analysis
test
results
concerning
major
pavement
distresses
shows
improvement,
particularly
high-temperature
zones.
interlocked
state
phase
transition
can
be
achieved
at
content
between
5%–6%
optimum
has
reported
lie
within
range.
blending
temperature
varies
140
°C–210
°C
out
which
180
is
most
frequently
used
by
researchers.
In
addition,
characteristics
aged
binder
reviewed.
Aging
indices
(residual
penetration
ratio,
change
softening
point,
viscosity
aging
residual
ductility
ratio)
didn’t
show
any
consistent
trend,
establishes
need
exploring
co-additives
substantially
improve
deterioration.
Preliminary
nano-additives
showed
improved
storage
stability
high
This
drawn
essential
conclusions
highlights
existing
gaps
for
peer
researchers
field
engineers.
Язык: Английский
Fundamental Thermodynamic Aspects for the Effective Dispersion of Carbon Nanotubes and Improve Performance Grade of Bitumen
Applied Sciences,
Год журнала:
2024,
Номер
14(23), С. 11271 - 11271
Опубликована: Дек. 3, 2024
The
application
of
carbon
nanotubes
to
enhance
bitumen
properties
is
relevant
due
the
need
increase
durability
asphalt
concrete
pavements
and
reduce
maintenance
costs.
Key
areas
requiring
further
study
include
processes
during
ultrasonic
dispersion,
selection
optimal
medium,
stability
resulting
dispersions.
This
examines
dispersions
containing
multi-walled
(MWCNTs)
Taunit
M
(from
5·10−4
5·10−2%)
various
hydrocarbon
plasticizers.
For
first
time,
change
in
Gibbs
free
energy,
enthalpy
(interaction
energy),
mixing
disordering
entropy
was
calculated
based
on
experimental
data
(surface
tension,
average
cubic
diameter
MWCNTs,
molecular
mass,
etc.).
were
compared
with
storage
polymer-modified
binders
(PMBs).
It
found
that
plays
a
key
role
forming
thermodynamically
stable
dispersions,
while
contribution
minimal.
High
dispersion
MWCNTs
can
at
high
concentrations
despite
growth.
Systems
selective
purification
extracts
showed
best
PMB
thermodynamic
instability.
property
changes
after
3
days
180
°C
no
more
than
5%.
suggests
structural
from
component
interactions
are
critical,
highlighting
for
an
integrated
approach
considering
both
macroscopic
properties.
Язык: Английский