Materials,
Год журнала:
2022,
Номер
15(10), С. 3426 - 3426
Опубликована: Май 10, 2022
In
this
paper,
the
electrochemical
corrosion
behavior
of
X70
steel
in
saline
soil
under
capillary
water
was
simulated
by
a
Geo-experts
one-dimensional
column
instrument.
A
volumetric
content
sensor
and
conductivity
test
were
used
to
study
migration
mechanism
salt
(sodium
chloride)
water.
The
system
analyzed
testing
as
well
macroscopic
microscopic
morphology
steel.
results
showed
that
significantly
influenced
rise
particular,
wetting
front
during
meant
located
at
three-phase
solid/liquid/gas
interface
certain
location,
which
worsened
its
behavior.
addition,
after
stabilized,
salts
transported
with
top
column.
This
resulted
highest
environment
most
severe
location.
Remote Sensing,
Год журнала:
2024,
Номер
16(8), С. 1328 - 1328
Опубликована: Апрель 10, 2024
Dielectric
properties
are
crucial
in
understanding
the
behavior
of
water
within
soil,
particularly
soil
content
(SWC),
as
they
measure
a
material’s
ability
to
store
an
electric
charge
and
influenced
by
other
minerals
soil.
However,
comprehensive
review
paper
is
needed
that
synthesizes
latest
developments
this
field,
identifies
key
challenges
limitations,
outlines
future
research
directions.
In
addition,
various
factors,
such
salinity,
temperature,
texture,
probing
space,
installation
gap,
density,
clay
content,
sampling
volume,
environmental
influence
measurement
dielectric
permittivity
Therefore,
aims
address
gap
critically
analyzing
current
state-of-the-art
properties-based
methods
for
SWC
measurements.
The
motivation
increasing
importance
precise
data
applications
agriculture,
monitoring,
hydrological
studies.
We
examine
time
domain
reflectometry
(TDR),
frequency
(FDR),
ground-penetrating
radar
(GPR),
remote
sensing
(RS),
capacitance,
which
accurate
cost-effective,
enabling
real-time
resource
management
health
through
measuring
travel
electromagnetic
waves
reflection
coefficient
these
waves.
can
be
estimated
using
approaches,
TDR,
FDR,
GPR,
microwave-based
techniques.
These
made
possible
loss
factor
with
SWC.
available
further
synthesized
on
basis
mathematical
models
relating
apparent
providing
updated
their
development,
applications,
monitoring.
It
also
analyzes
recent
calibration
models,
algorithms,
challenges,
trends
estimating
By
consolidating
advances
highlighting
remaining
article
guide
researchers
practitioners
toward
more
effective
strategies
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Март 14, 2024
Abstract
Freeze-thaw
cycles
and
compactness
are
two
critical
factors
that
significantly
affect
the
engineering
properties
safety
of
building
foundations,
especially
in
seasonally
frozen
regions.
This
paper
investigated
effects
freeze-thaw
on
shear
strength
naturally
strongly
chlorine
saline
soil
with
85%,
90%
95%.
Three
samples
different
were
made.
Size
mass
changes
measured
recorded
during
cycles.
Shear
under
vertical
pressures
was
determined
by
direct
tests,
cohesion
friction
angle
discussed.
Microstructure
characteristic
observed
using
scanning
electron
microscopy
Furthermore,
numerical
software
used
to
calculate
subsoil-bearing
capacity
settlement
electric
tower
foundation
Qarhan
Salt
Lake
region
Results
show
low-density
shows
thaw
deformation,
but
high-density
frost-heaving
deformation
increase
The
first
increases
then
decreases
After
30
cycles,
is
28.3%,
29.2%
29.6%
lower
than
without
cycle,
71.4%,
60.1%
54.4%
close
each
other.
Microstructural
indicate
cycle
leads
breakage
coarse
particles
aggregation
fine
particles.
Correspondingly,
structure
type
from
a
granular
stacked
cemented-aggregated
system.
Besides,
quality
loss
at
about
2%
suggest
there
may
be
an
optimal
between
90
95%,
premise
meeting
design
requirements
economic
benefits.
study
can
provide
theoretical
guidance
for
constructions
Geoderma,
Год журнала:
2023,
Номер
435, С. 116506 - 116506
Опубликована: Май 13, 2023
Frozen
soil
masses
under
various
geologic
conditions
are
usually
in
complex
stress
states
and
may
carry
loads
with
different
paths.
Thus,
a
comprehensive
understanding
of
the
mechanical
behaviors
frozen
paths
is
crucial
to
guide
engineering
develop
mechanics.
In
this
work,
triaxial
compressive
tests
32
were
conducted
on
silty
clay,
taking
both
global
local
strain
measurements.
The
test
composed
nine
initial
confining
pressures
14
increment
direction
angles,
whose
influences
behavior
investigated.
coupling
effects
between
them
strength
deformation
characteristics
revealed:
lower
pressure
was,
stronger
angle
were,
larger
were.
This
indicated
that
influence
path
stress–strain
response
might
depend
change
density
during
loading:
denser
specimen
less
anisotropic
it
was.
uniqueness
directions
for
certain
state
reached
through
was
found,
when
assuming
rate
coincided
stress.
An
asymmetric
failure
function
meridian
plane
proposed,
then
three-dimensional
criterion
constructed
by
combining
deviatoric-plane
unified
criterion.
validity
proposed
examined
using
stress-path
results
three
types
geomaterials
literature.
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
56, С. 104270 - 104270
Опубликована: Март 24, 2024
Hydro-thermal
coupling
is
the
essence
of
freeze-thaw
process,
and
theoretical
studies
this
coupled
process
have
been
hot
topics
in
field
frozen
soil.
Darcy's
law
unsaturated
soil
water
flow,
heat
conduction
theory,
relative
saturation
solid-liquid
ratio
are
based
on
paper.
According
to
principle
that
cumulative
curve
particle
gradation
canal
foundation
similar
soil-water
properties.
A
characteristic
derived
using
curve.
VG
model
then
used
fit
curves
obtain
soil's
hydraulic
parameters,
established
hydro-thermal
modified
reflect
evolution
more
objectively.
closed
system
one-way
freezing
test
method
verify
feasibility
proposed
part.
The
results
show
optimal
parameters
subsoil
a
=
0.06,
n
1.2,
m
0.17,
temperature
fields
obtained
from
simulation
good
agreement
with
measured
data,
showing
utility
predicting
parameters.
Analysis
multi-field
interaction
mechanism
dynamic
during
thawing.
This
has
great
importance
for
preventing
damage
canals
protecting
agricultural
safety.
