Civilla Jurnal Teknik Sipil Universitas Islam Lamongan,
Journal Year:
2022,
Volume and Issue:
7(2), P. 205 - 205
Published: Oct. 31, 2022
Porous
asphalt
is
a
type
of
pavement
designed
to
increase
the
coefficient
friction
on
surface.
The
porous
functions
as
drainage
drain
water
in
top
layer
vertically
and
horizontally.
method
used
this
research
an
experimental
by
making
different
tests
laboratory.
Stages
works
include
examining
60/70
penetration
bitumen,
aggregate
testing,
mixing,
preparation
sample
with
variation
level
5%,
5.5%,
6%,
6.5%,
7%
2x50
Marshall
compaction.
Volumetric
measurement
testing
get
optimum
level.
next
test
cantabro
test,
permeability
ITS
UCS
at
As
results
study,
it
was
obtained
that
value
6.15%,
characteristics,
namely
stability
636.32
kg
(specification
min.
500
kg),
Flow
4.0
mm
(specifications
2-6
mm),
Quotient
159.15
kg/mm
max.
400
kg/mm),
VIM
19.828%
18-25%).
At
samples
gave
Cantabro
17.90%
20%),
vertical
horizontal
values
0.145
0.152
cm/sec
0.1-0.5
cm/sec),
158.88
kPa,
916.343
kPa.
Road Materials and Pavement Design,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 13
Published: June 11, 2024
Porous
asphalt
(PA)
pavement
usually
has
a
short
service
life
due
to
the
ravelling
distress.
Spraying
surface
treatment
(ST)
emulsion
could
alleviate
it.
However,
effects
of
ST
on
short-
and
long-term
mechanical
performances
PA
mixture
are
unclear.
Therefore,
this
study
used
repeated
axial
load
test,
indirect
tensile
fatigue
test
cracking
evaluate
rutting,
resistances
damaged
under
different
curing
durations,
respectively.
Two
temperatures,
25
60°C,
were
considered
here.
Results
showed
that
properties
treated
significantly
improved
in
short-term.
The
durability
is
good
based
observation
data.
rutting
resistance
was
not
compromised
if
application
rate
well
controlled.
A
high
temperature
expedite
recovery
efficiency
PA,
but
it
accompanied
by
faster
aging,
which
cannot
be
ignored.
Applied Sciences,
Journal Year:
2023,
Volume and Issue:
13(1), P. 652 - 652
Published: Jan. 3, 2023
The
air
void
content
is
one
of
the
most
important
volumetric
properties
asphalt
matrixes,
such
as
mixtures
or
mortars,
because
it
can
greatly
affect
performance
matrix.
At
mixture
level,
there
are
standardized
methods
for
measuring
content,
which
an
design
parameter
a
mixture.
However,
at
mortar
scale,
no
unified
method
has
been
proposed
to
determine
corresponding
Therefore,
this
research
aims
to,
first,
characterize
distribution
within
and
then
develop
updated
theoretical
calculating
mortar.
internal
structures
voids
from
three
commonly
used
with
different
gradations
were
captured
using
industrial
CT
scanning
technique
morphologically
characterized
image
analysis
method.
Three-dimensional
models
reconstructed,
calculated
images
was
also
verified
by
density
tests.
results
show
that
size
fit
cumulative
Weibull
curve.
nominal
maximum
particle
(NMPS)
main
parameters
affected
mortar’s
voids.
had
linear
relationships
both
aggregate
ratio.
more
sensitive
NMPS
compared
ratio
This
provides
quantitative
calculate
mixture,
may
help
in
matrix
Nanotechnology Reviews,
Journal Year:
2023,
Volume and Issue:
12(1)
Published: Jan. 1, 2023
Abstract
Nanosilica
(NS)
may
be
obtained
as
a
by-product
in
several
industrial
processes
and
is
associated
with
high
availability
affordability
among
other
nanoadditives.
NS
has
been
used
for
asphalt
modification,
improvement
high-temperature
performance
physical
properties
reported.
However,
due
to
the
wide
varieties
intrinsic
variability
of
materials,
concerns
have
raised
about
reproducibility
some
conclusions,
therefore,
review
was
conducted.
According
results,
additives
purity
over
99%
were
usually
modification
specific
surface
area
100
m
2
/g,
leading
superior
absorption
thus
rutting
resistance
mixtures.
Due
lack
guidance
blending
procedures,
inconsistency
exists
studies
shear
speed,
duration,
temperature,
possible
excessive
unnecessary
energy
time
consumption.
Rises
concentration
would
cause
higher
softening
point
rotational
viscosity,
therefore
elevated
temperatures
mixing
paving,
but
penetration
reduced.
rheological
evaluations,
rise
concentration,
parameter
increase,
indicating
an
performance,
low-temperature
deteriorate.
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(18), P. 13911 - 13911
Published: Sept. 19, 2023
Porous
asphalt
pavements
have
a
skeletal
structure
with
large
number
of
interconnecting
pores,
which
can
improve
drainage,
ensure
traffic
safety,
and
reduce
tire
noise.
However,
it
weaken
the
mechanical
properties
pavement.
One
key
factors
affecting
performance
porous
is
quality
compaction,
assessment
difficult
to
accurately
quantify.
Therefore,
Superpave
gyratory
compaction
(SGC)
skeleton
penetration
tests
mixtures
were
carried
out
using
three
engineering-differentiated
gradations
in
this
paper
investigate
characteristics
contact
state
during
penetration.
The
results
show
that
obvious
stages
increase
cycles
be
observed
process.
All
achieve
maximum
porosity
requirements
within
reasonable
cycles,
while
only
medium
fine
approximately
meet
minimum
requirements.
coarse
gradation
takes
too
long
finish
almost
impossible
porosity.
optimum
match
between
void
ratio
design
verified
VCA
curves.
This
new
method
determine
corresponding
target
better
accuracy
ease
engineering
application.
Moreover,
medium-graded
embedding
exhibit
greater
strength
than
coarse-graded
aggregates,
provide
theoretical
support
for
establishment
material
grade
optimization
methods.
International Journal of Pavement Engineering,
Journal Year:
2023,
Volume and Issue:
25(1)
Published: Dec. 28, 2023
This
research
quantified
the
temporal
mesostructural
evolution
of
bitumen
emulsion–cement
composites
using
time-lapse
high-energy
X-ray
tomography
a
fine-aggregate
matrix.
The
image
post-processing
and
analysis
showed
that
mastic’s
significant
decrease
in
volume
complemented
expansion
pore
space.
Nevertheless,
fractions
determined
by
essentially
differed
from
physical
composition
specimens
were
several
times
less
sensitive
to
curing.
Because
extremely
heterogenous
microstructure
abundance
calcium,
mastic
phase
had
highest
attenuation
X-rays,
but
attenuations
bitumen-
cement-dominated
systems
experienced
contrary
trends.
sand
space
typically
smooth
oppositely
evolving
axial
distributions
with
highest-density
plateau
middle,
while
was
distributed
uniformly.
radial
evolved
irregularly
notably
interfered
beam
hardening.
increase
space’s
local
thicknesses
unevenly
across
diameters.
Except
particle
size
distributions,
all
results
almost
excellently
repeatable.
Finally,
interaction
X-rays
identified
as
crucial
for
interpretation
validity
results.
Moreover,
although
water
could
not
be
segmented
conventional
tomography,
its
discrete
signature
present
throughout
behaviour
other
phases.
Road Materials and Pavement Design,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 27
Published: Dec. 16, 2024
The
internal
void
structure
of
porous
asphalt
concrete
(PAC)
is
crucial
for
its
drainage
performance.
This
study
employs
X-ray
CT
scanning
and
image
processing
techniques
to
analyze
key
microscopic
parameters
PAC,
including
porosity,
number
voids,
equivalent
diameter,
fractal
dimension.
evolution
these
under
clogging
cleaning
conditions
investigated.
A
predictive
model
the
permeability
coefficient
PAC
established
based
on
findings.
Results
indicate
that
distribution
exhibits
similar
variations
across
specimens
with
different
porosities
during
cleaning.
Notably,
voids
increases
significantly
after
clogging,
while
diameter
decreases
dimension
remains
stable.
All
are
effectively
restored
post-cleaning.
strong
correlation
exists
between
dimension,
coefficient,
ranked
from
best
worst
as:
a
0.991
model.
