Transportation Research Record Journal of the Transportation Research Board,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 8, 2024
Urban
heat
islands
(UHI)
have
become
an
increasingly
pressing
issue
owing
to
the
global
warming
trend
and
a
steady
growth
of
urban
areas.
Revegetation,
shading,
or
reduction
sealed
surfaces
is
not
always
possible
in
cities.
Therefore,
one
way
fight
UHIs
through
adapting
currently
used
pavements.
This
study
assesses
thermal
behavior
12
different
pavement
materials
custom-made
test
stand.
The
include
mastic
asphalt
(
MA
8,
8
white),
porous
PA
4,
4
abraded,
white,
concrete
AC
11
transparent,
yellow),
semi-flexible
pavements
SFP
zeolite).
albedo
was
assessed
using
pyranometer.
Sensors
imaging
were
measure
temperatures
during
two
simulated
cycles.
Both
underneath
specimens
at
surface
considered,
as
well
cooling
times
materials.
results
showed
high
maximum
for
MA,
low
maxima
white
painted
materials,
with
differences
up
15°C.
Porous
asphalt,
like
cools
faster
than
from
roughly
47°C
28°C,
taking
3.7
h
compared
8’s
5.1
h.
highlights
importance
considering
regional
solar
phases
experimental
setups.
Through
wide
range
tested
significant
linear
correlation
between
measured
temperature
proven.
Ultimately,
foundation
comparability
these
established.
International Journal of Pavement Engineering,
Год журнала:
2024,
Номер
25(1)
Опубликована: Апрель 23, 2024
This
study
aimed
to
demonstrate
how
incorporating
titanium
dioxide
nanoparticles
into
concrete
blocks
made
with
recycled
glass
mitigates
the
effects
of
clogging
and
surface
wear
on
pavement
radiative
properties.
Using
a
reference
concrete,
four
variants
were
formulated:
colourless,
green,
amber
glass,
photocatalytic
colourless
glass.
Three
accelerated
processes
applied
in
field:
clogging,
wear,
worn
surface.
After
each
cycle
and/or
solar
reflectance
thermal
emittance
measured
calculate
index
(SRI).
Surface
decreased
SRI
for
all
types,
albeit
less
until
mean
texture
depth
(MTD)
near
0.80
mm,
where
stabilisation
trend
was
noted
across
concretes.
Photocatalytic
consistently
showed
highest
values
relative
MTD.
Clogging
surfaces
indicated
superior
properties
at
contamination
degree
(SCD)
than
40%.
In
conclusion,
conventional
concretes
had
inferior
compared
concrete.
However,
properties,
indicating
that
nano-TiO2
addition
reduced
effects.
EDUSAINTEK JURNAL PENDIDIKAN SAINS DAN TEKNOLOGI,
Год журнала:
2024,
Номер
11(3), С. 1503 - 1519
Опубликована: Июнь 7, 2024
Cognitive
development
starts
from
concrete
thinking
processes
to
higher
levels,
namely
abstract
and
logical
concepts.
According
Piaget,
children
are
naturally
interested
in
the
world
actively
seek
information
that
can
help
them
understand
world.
This
research
aims
describe
students'
cognitive
based
on
Jean
Piaget's
theory
of
how
it
is
implemented
science
learning
at
junior
high
school
level.
uses
qualitative
methods
with
a
descriptive
analysis
approach.
means
this
researcher
chose
use
primary
secondary
sources
(books,
journals,
websites,
etc.)
regarding
developmental
according
Piaget
as
source
data.
focuses
implications
or
involvement
theory.
The
results
show
implementing
educators
stages
characteristics
so
they
determine
levels
choose
strategies
appropriate
development.
Transportation Research Record Journal of the Transportation Research Board,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 8, 2024
Urban
heat
islands
(UHI)
have
become
an
increasingly
pressing
issue
owing
to
the
global
warming
trend
and
a
steady
growth
of
urban
areas.
Revegetation,
shading,
or
reduction
sealed
surfaces
is
not
always
possible
in
cities.
Therefore,
one
way
fight
UHIs
through
adapting
currently
used
pavements.
This
study
assesses
thermal
behavior
12
different
pavement
materials
custom-made
test
stand.
The
include
mastic
asphalt
(
MA
8,
8
white),
porous
PA
4,
4
abraded,
white,
concrete
AC
11
transparent,
yellow),
semi-flexible
pavements
SFP
zeolite).
albedo
was
assessed
using
pyranometer.
Sensors
imaging
were
measure
temperatures
during
two
simulated
cycles.
Both
underneath
specimens
at
surface
considered,
as
well
cooling
times
materials.
results
showed
high
maximum
for
MA,
low
maxima
white
painted
materials,
with
differences
up
15°C.
Porous
asphalt,
like
cools
faster
than
from
roughly
47°C
28°C,
taking
3.7
h
compared
8’s
5.1
h.
highlights
importance
considering
regional
solar
phases
experimental
setups.
Through
wide
range
tested
significant
linear
correlation
between
measured
temperature
proven.
Ultimately,
foundation
comparability
these
established.
