The
frequent
dry-wet
cycles
in
the
Loess
Plateau
can
lead
to
deterioration
of
fiber-reinforced
loess
(FR
loess),
which
turn
cause
collapse
when
exposed
rainfall
erosion
or
immersion.
In
recent
years,
geopolymers
have
received
considerable
attention
due
their
advantages,
such
as
solid
waste
disposal
and
low
carbon
dioxide
emissions.
this
paper,
effects
geopolymer,
consisting
steel
slag
(SS),
ground
granulated
blast
furnace
(GGBS),
desulfurization
gypsum
(DG),
sodium
silicate,
on
durability
water
stability
FR
were
studied
by
conducting
cycle
tests,
immersion
unconfined
compression
tests.
results
show
that
compressive
strength
(UCS)
geopolymer-stabilized
(FRG
loess)
decreases
exponentially
with
increase
while
increasing
approximately
linearly
geopolymer
dosage.
coefficient
FRG
shows
an
exponential
increases
dosage,
higher
greater
stability.
stabilization
mechanisms
investigated
XRD
SEM-EDS
It
reveals
main
mineral
phases
are
calcium
silicate
hydrate,
aluminate
hydrate
gel,
ettringite
crystal.
microstructure
is
quite
dense,
but
after
cycles,
it
appears
some
cracking
loosening.
pores
microcracks
low-dosage
samples
develop
distinctly
under
whereas
high-dosage
significant
overall
study
suggests
optimal
dosage
should
be
15%.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Янв. 26, 2025
Loess
is
extensively
developed
on
both
sides
of
the
Longwu
River,
a
tributary
Yellow
Tongren
County,
Qinghai
Province.
The
engineering
geological
characteristics
are
complex,
and
landslide
disasters
highly
developed.
Based
field
surveys
physical
property
analysis
loess
in
this
area,
study
analyzes
influence
water
content,
consolidation
pressure,
soil
disturbance
dynamic
using
GDS
triaxial
tests.
results
show
that
has
strong
structural
properties.
Its
constitutive
relationship
conforms
to
Hardin-Dinevich
hyperbolic
model,
where
parameters
b
decrease
with
increasing
confining
pressure
increase
content.
cohesion
friction
angle
significantly
affected,
decreasing
by
77%
~
83%
when
saturated.
However,
less
affected
content
changes,
18%
25%
Under
conditions,
only
12
16°,
making
slopes
composed
susceptible
instability
sliding
under
earthquake
conditions.
properties
influenced
destroying
joint
strength
intact
loess.
Before
reaching
plastic
limit
decreases
sharply
then
slowly.
frictional
shows
an
opposite
trend.
same
experimental
failure
stress,
maximum
elastic
modulus,
shear
generally
greater
than
those
remolded
loess,
differences
between
them
This
provides
insights
into
which
can
serve
as
reference
for
understanding
formation
mechanisms,
stability
analysis,
seismic
design
landslides
region.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Фев. 15, 2025
Shallow
soils
are
highly
vulnerable
to
the
combined
impacts
of
various
factors,
including
vehicle
loading,
precipitation,
and
groundwater.
The
slope
soil
at
roadside
is
inevitably
subjected
long-term
cyclic
loading
from
traffic.
Previous
studies
have
demonstrated
that
ecological
engineering
measures
can
effectively
mitigate
deformation
reduce
pore
water
pressure
development,
thereby
preventing
erosion
landslides.
This
study
aims
investigate
influence
root
distribution
patterns
on
elastic
development
trends
in
reinforced
by
simulating
traffic
through
dynamic
triaxial
tests.
findings
demonstrate
presence
roots
significantly
enhances
soil's
resistance
deformation.
When
vertical
accounts
for
25%
(while
horizontal
75%),
experimental
results
indicate
exhibits
minimal
slower
development.
Moreover,
a
parameter
D
introduced
enhance
existing
models
with
increased
coefficients
determination,
improving
applicability
root-reinforced
soils.
These
provide
valuable
insights
enhancing
strength
liquefaction
while
providing
guiding
research
mechanical
effects
reinforcement
restoration
highway
slopes.
Journal of Rock Mechanics and Geotechnical Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 1, 2024
The
construction
of
coastal
areas
generates
a
substantial
volume
waste
marine
clay
(WMC),
which
poses
environmental
and
safety
challenges
during
the
stockpiling
process.
improved
preparation
WMC
as
roadbed
materials
emerges
crucial
pathway
for
resource
utilization.
However,
engineering
performance
durability
prepared
from
have
always
been
concern
scholars
engineers.
This
study
employs
alkali-activated
ground
granulated
blast-furnace
slag
(GGBFS)
municipal
solid
incineration
bottom
ash
(MSWIBA)
to
solidify
materials.
results
showed
that
combined
utilization
GGBFS
MSWIBA
improve
can
meet
mechanical
requirements
incorporation
5-20%
could
water
stability
coefficient
California
bearing
ratio
more
than
85%
80%,
respectively.
material
was
significantly
by
addition
MSWIBA.
After
12
dry–wet
cycles,
strength
without
with
5%
0
2.87
MPa,
Following
analysis
properties
durability,
optimal
dosage
determined
be
5%.
enhanced
attributed
optimization
gradation
pore
structure
achieved
through
small
quantity
carbon
emission
normalized
global
warming
potentials
treated
were
much
lower
cementitious
binders
such
ordinary
Portland
cement.
These
findings
indicate
has
potential
substitute
natural
aggregates
like
sand
gravel,
effectively
improving
promoting
safe
efficient
recycling
resources.
