Water,
Год журнала:
2023,
Номер
15(5), С. 968 - 968
Опубликована: Март 2, 2023
Artificial
reclamation
is
one
of
the
main
means
land
expansion
in
coastal
cities.
However,
permeability
underlying
soft
clay
(USC),
derived
from
dredged
load,
has
not
been
paid
enough
attention,
although
it
closely
related
to
long-term
deformation
and
stability
foundation
soil.
Hence,
this
paper
analyzes
relationship
between
characteristics
microscopic
pore
USC
Chongming
East
Shoal
(CES),
a
typical
multi-phase
area,
through
variable
head
test,
mercury
intrusion
porosimetry
(MIP)
scanning
electron
microscope
(SEM)
test.
Furthermore,
grey
relation
entropy
Pearson
correlation
analysis
are
implemented
analyze
influence
micropore
parameters
on
permeability.
The
results
revealed
that
seepage
process
showed
transition
unstable
relatively
stable
seepage.
Meanwhile,
coefficient
(PC)
attenuated
with
time
cyclically,
indicating
alternating
effect
closed
opened
channels.
During
seepage,
particles
could
be
entrained
by
water
intercepted
pores,
thus
clogging
Then,
increased
pressure
break
new
degree
was
positively
correlated
average
cycle
period
PCs,
also
present
stage
PCs.
A
lower
mesopores
content,
higher
fractal
dimension,
aggregated
flocculate
microstructure
promote
result
efficiency.
Affected
channels,
may
face
potential
future,
which
needs
further
investigation.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Дек. 28, 2024
Saline
soil
is
widely
distributed
in
China
and
poses
significant
challenges
to
engineering
construction
due
its
harmful
effects,
such
as
salt
heaving,
dissolution
collapse,
frost
heaving.
The
Microbial-Induced
Calcite
Precipitation
(MICP)
method
an
emerging
environmental-friendly
modification
that
can
reduce
or
eliminate
the
environmental
hazards
of
saline
soil.
To
verify
feasibility
MICP
for
improving
properties
soil,
laboratory
tests
were
conducted
study
effects
content,
activated
carbon
content
freeze-thaw
cycles
on
compression
water
retention
behavior
modified
following
conclusions
drawn:
calcium
carbonate
produced
from
cement
particles
structures,
which
resists
expansion
damage
caused
by
heaving
reduces
compressibility.
Additionally,
fill
pores
improves
capacity
addition
enhance
reaction
leading
further
reduction
compressibility
enhancement
Water,
Год журнала:
2023,
Номер
15(5), С. 968 - 968
Опубликована: Март 2, 2023
Artificial
reclamation
is
one
of
the
main
means
land
expansion
in
coastal
cities.
However,
permeability
underlying
soft
clay
(USC),
derived
from
dredged
load,
has
not
been
paid
enough
attention,
although
it
closely
related
to
long-term
deformation
and
stability
foundation
soil.
Hence,
this
paper
analyzes
relationship
between
characteristics
microscopic
pore
USC
Chongming
East
Shoal
(CES),
a
typical
multi-phase
area,
through
variable
head
test,
mercury
intrusion
porosimetry
(MIP)
scanning
electron
microscope
(SEM)
test.
Furthermore,
grey
relation
entropy
Pearson
correlation
analysis
are
implemented
analyze
influence
micropore
parameters
on
permeability.
The
results
revealed
that
seepage
process
showed
transition
unstable
relatively
stable
seepage.
Meanwhile,
coefficient
(PC)
attenuated
with
time
cyclically,
indicating
alternating
effect
closed
opened
channels.
During
seepage,
particles
could
be
entrained
by
water
intercepted
pores,
thus
clogging
Then,
increased
pressure
break
new
degree
was
positively
correlated
average
cycle
period
PCs,
also
present
stage
PCs.
A
lower
mesopores
content,
higher
fractal
dimension,
aggregated
flocculate
microstructure
promote
result
efficiency.
Affected
channels,
may
face
potential
future,
which
needs
further
investigation.
