International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(24), С. 13427 - 13427
Опубликована: Дек. 14, 2024
This
study
aimed
to
evaluate
the
influence
of
indirect-plasma-treated
water
(IPTW)
in
preparation
hydrogels.
Three
commonly
used
natural,
biodegradable
polymers
with
ability
form
gels
were
selected:
gelatin,
carrageenan,
and
sodium
alginate.
The
pH,
gelling
temperature,
texture
profile,
swelling
degree,
color
hydrogels
evaluated,
subjected
Fourier-transform
infrared
(FTIR)
spectroscopy.
morphology
was
investigated
using
Scanning
Electron
Microscopy
(SEM).
Additionally,
physiochemical
properties
media,
which
distilled
(DW)
IPTW,
analyzed.
results
indicated
that
prepared
IPTW
characterized
by
a
lower
higher
hardness
gelation
temperature.
After
48
h
ratio
(SR)
testing,
gelatin
alginate
made
SR,
while
an
inverse
relationship
found
case
SR
carrageenan
gels.
FTIR
analysis
confirmed
changes
binding
ability.
use
also
significantly
affected
microstructure
tested
materials.
A
statistically
significant
change
gel
samples
noted.
showed
induces
physicochemical
hydrogels,
can
lead
enhancement
their
practical
applications.
Transportation Geotechnics,
Год журнала:
2024,
Номер
46, С. 101266 - 101266
Опубликована: Май 1, 2024
The
performance
of
an
environmentally
friendly
biopolymer
synthesised
from
secondary
resources
to
overcome
the
wind
erosion
sandy
soil
was
investigated
in
this
study.
study
employed
a
multi-scale
approach
investigate
mechanical,
erosional,
and
hydraulic
properties
soil.
At
macroscale,
experimental
techniques
such
as
unconfined
triaxial
compression
tests,
permeability
measurements,
contact
angle
assessments,
tunnel
experiments
were
utilized
characterize
bulk
behavior
Concurrently,
molecular
dynamics
(MD)
simulations
conducted
at
nanoscale
predict
surface
mechanical
characteristics
elucidate
chemical
interactions
level.
Results
show
that
when
outer
particles
is
coated
with
sparse
concentration
biopolymer,
aerosol
inhibitory
significant
even
under
extreme
storm
conditions
reaching
speeds
140
km/h
storms.
on
impact
content,
curing
time,
revealed
addition
chitosan
has
ability
enhance
bonding
between
significantly
atomic
insight
reveals
huge
entanglement
by
Van
der
Waals
interaction.
results
Unconfined
Compressive
Strength
test
indicate
enhances
compressive
strength
sand
up
320
kPa.
Additionally,
demonstrated
application
led
34.2
kPa
improvement
cohesion
sand.
Furthermore,
analysis
decrease
conductivity
coefficient
1.6
×
10^-6
m/s
5.7
10^-7
m/s,
representing
reduction
approximately
35
%.
Materials Research Express,
Год журнала:
2024,
Номер
11(10), С. 105305 - 105305
Опубликована: Окт. 1, 2024
Abstract
The
structural
properties
of
loess
are
susceptible
to
change
when
subjected
external
loads
and
complex
environments,
leading
various
geological
disasters.
To
investigate
the
mechanical
behavior
strengthening
mechanism
stabilized
with
biopolymers
such
as
xanthan
gum
guar
gum,
especially
for
soils
low
bearing
capacity
stability
in
engineering
applications,
we
conducted
research
on
improvement
soil
tests
including
unconfined
compressive
strength,
disintegration,
direct
shear,
microstructure
were
conducted.
Among
four
different
dosages
(0%,
0.5%,
1%,
2%)
curing
ages
(1
day,
3
days,
7
14
days),
2%
content
biopolymer
days
had
greatest
impact
loess,
Both
shear
well
water
solidified
improve
higher
or
prolonged
time;
however,
disintegration
rate
decreases.
Microscopic
analysis
indicates
that
effectively
fill
gaps
between
particles
attach
particle
surfaces,
forming
fibrous
reticular
structures
interparticle
bonding
ultimately
increase
strength
loess.
Xanthan
can
enhance
erosion
resistance
water-holding
capacity.
These
outcomes
suggest
have
potential
serve
environmentally
sustainable
alternatives
conventional
stabilizers.
Polymers,
Год журнала:
2024,
Номер
16(19), С. 2831 - 2831
Опубликована: Окт. 7, 2024
Acacia
gum
(AG),
a
polysaccharide
biopolymer,
has
been
adopted
to
improve
the
strength
of
three
cohesive
soils
by
subjecting
them
diverse
environmental
aging
conditions.
Being
and
potentially
sustainable
construction
material,
AG
yielded
flexible
film-like
threads
after
48
h
upon
hydration,
its
pH
value
4.9
varied
marginally
with
stabilized
soils.
The
soil
samples
for
geotechnical
evaluation
were
subjected
wet
mixing
tested
under
their
Optimum
Moisture
Content
(OMC),
as
determined
light
compaction
method.
addition
modified
consistency
indices
due
presence
hydroxyl
groups
in
AG,
which
also
led
rise
OMC
reduction
Maximum
Dry
Unit
weight
(MDU).
Unconfined
Compressive
Strength
(UCS)
California
Bearing
Ratio
(CBR)
thermal
curing
at
333
K
well
on
same
day
sample
preparation.
least
performing
condition
soil’s
CBR
was
evaluated
submerged
conditions
allowing
AG-stabilized
specimens
air-cure
period
1
week.
UCS
7
days
initial
K.
A
dosage
1.5%
2530
kN/m2
98.3%,
respectively,
low
compressible
clay
(LCC)
temperature
viscosity
found
be
214.7
cP
2%
dosage.
Scanning
Electron
Microscopy
(SEM),
Fourier
Transform
Infrared
Spectroscopy
(FTIR),
average
particle
size
determination
revealed
filling
pores
gel
solution,
adsorption,
hydrogen
bonding,
improvements
macroproperties.
Applied Sciences,
Год журнала:
2025,
Номер
15(10), С. 5223 - 5223
Опубликована: Май 8, 2025
Granite
residual
soil
exhibits
a
tendency
to
collapse
and
disintegrate
upon
exposure
water,
displaying
highly
unstable
mechanical
properties.
This
makes
it
susceptible
landslides,
mudslides,
other
geological
hazards.
In
this
study,
three
common
biopolymers,
i.e.,
xanthan
gum
(XG),
locust
bean
(LBG),
guar
(GG),
are
employed
improve
the
strength
stability
of
granite
soil.
A
series
experiments
were
conducted
on
biopolymer-modified
soil,
varying
types
their
concentrations,
curing
times,
examine
effects
soil’s
properties
failure
characteristics.
The
microscopic
structure
interaction
mechanisms
between
biopolymers
analyzed
using
scanning
electron
microscopy
X-ray
diffraction.
results
indicate
that
gum-treated
exhibited
highest
unconfined
compressive
shear
strength.
After
adding
2.0%
gum,
modified
1.6
times
1.58
untreated
respectively.
Optimal
improvements
observed
when
biopolymer
concentration
ranged
from
1.5%
2%,
with
time
14
days.
treatment
cohesion
is
1.36
1.34
1.55
enhanced
bonding
through
cross-linking,
thereby
improving
gel-like
substances
formed
by
reaction
water
adhered
encapsulated
particles,
significantly
altering
deformation
behavior,
toughness,
modes.
Furthermore,
interactions
minerals
functional
groups
contributed
further
enhancement
study
demonstrates
feasibility
offering
theoretical
insights
into
underlying
govern
improvement.
Materials,
Год журнала:
2024,
Номер
17(9), С. 2000 - 2000
Опубликована: Апрель 25, 2024
To
improve
the
in
situ
soil
stabilization,
different
chemical
additives
are
used
(ion
exchange
compounds,
based
on
H2SO4
or
vinyl
polymers,
and
organic
using
lignosulfonates).
One
interesting
alternative
is
production
of
from
various
waste
materials.
The
extensive
testing
waste-based
blends
with
was
performed;
mechanical
(unconfined
compressive
strength
(UCS))
hydraulic
(capillary
rise,
water
absorption,
frost
resistance
(FR))
properties
were
measured.
optimization
process
led
to
obtaining
additive
compositions
ensuring
high
sealing
properties:
by-pass
ash
ceramics
industry,
H2SO4,
pyrolytic
waxes/oils
mixed
plastics,
tires
HDPE,
emulsion
chewing
gum
waste.
For
sandy
soil,
following
most
promising:
wax
(EPW)
PE
foil
(WPEF)
addition
pyrolytic-oil
tires,
EPW
plastics
“by-pass”
NaOH,
WPEF
reaching
up
93%
FR,
a
79.6%
7-day
UCS
increase,
27.6%
28-day
increase.
clay:
solely
7.5%
an
80.7%
119.1%
Journal of Rock Mechanics and Geotechnical Engineering,
Год журнала:
2024,
Номер
16(7), С. 2715 - 2731
Опубликована: Май 30, 2024
The
actively
heated
fiber-optic
(AHFO)
technology
has
become
emerged
as
a
research
focus
due
to
its
advantages
of
distributed,
real-time
measurement
and
good
durability.
These
attributes
have
led
the
gradual
application
AHFO
water
content
in
situ
soil.
However,
all
existing
applications
fail
consider
effect
soil–sensor
contact
quality
on
measurements,
limiting
potential
for
wider
technology.
To
address
this
issue,
authors
propose
method
determining
thermal
resistance
based
principle
an
infinite
cylindrical
heat
source.
This
is
then
used
establish
that
considers
resistance.
reliability
validity
new
are
explored
through
laboratory
test
field
case
study,
spatial-temporal
evolution
soil
revealed.
results
demonstrate
highly
effective
applicable
types
soils.
requires
only
moisture
content,
dry
density,
response
be
obtained.
In
case,
error
between
method,
which
takes
into
account
resistance,
neutron
scattering
0.011.
exhibits
seasonal
variation,
with
increase
spring
autumn
decrease
summer
winter.
Furthermore,
shallow
soils
precipitation
evaporation
significant.
findings
contribute
enhancement
accuracy
soils,
thereby
facilitating
dissemination
utilization