Materials,
Journal Year:
2023,
Volume and Issue:
16(11), P. 3996 - 3996
Published: May 26, 2023
This
study
evaluates
a
binary
mixture
of
fly
ash
and
lime
as
stabilizer
for
natural
soils.
A
comparative
analysis
was
performed
on
the
effect
bearing
capacity
silty,
sandy
clayey
soils
after
addition
ordinary
Portland
cement
conventional
stabilizers,
non-conventional
product
Ca(OH)2
called
FLM.
Laboratory
tests
were
carried
out
to
evaluate
additions
stabilized
by
unconfined
compressive
strength
(UCS).
In
addition,
mineralogical
validate
presence
cementitious
phases
due
chemical
reactions
with
FLM
performed.
The
highest
UCS
values
found
in
that
required
water
demand
compaction.
Thus,
silty
soil
added
reached
10
MPa
28
days
curing,
which
agreement
pastes,
where
moistures
higher
than
20%
showed
best
mechanical
characteristics.
Furthermore,
120
m
long
track
built
its
structural
behavior
months.
An
increase
200%
resilient
modulus
FLM-stabilized
identified,
decrease
up
50%
roughness
index
FLM,
(L)
Ordinary
Cement
(OPC)-stabilized
compared
without
resulting
more
functional
surfaces.
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(2), P. 1408 - 1408
Published: Jan. 11, 2023
Unconfined
compressive
strength
(UCS)
can
be
used
to
assess
the
applicability
of
geopolymer
binders
as
ecologically
friendly
materials
for
geotechnical
projects.
Furthermore,
soft
computing
technologies
are
necessary
since
experimental
research
is
often
challenging,
expensive,
and
time-consuming.
This
article
discusses
feasibility
performance
required
predict
UCS
using
a
Random
Forest
(RF)
algorithm.
The
alkali
activator
studied
was
sodium
hydroxide
solution,
considered
source
material
ground-granulated
blast-furnace
slag
fly
ash.
A
database
with
283
clayey
soil
samples
stabilized
determine
UCS.
split
into
two
sections
development
RF
model:
training
data
set
(80%)
testing
(20%).
Several
measures,
including
coefficient
determination
(R),
mean
absolute
error
(MAE),
root
square
(RMSE),
were
effectiveness
model.
statistical
findings
this
study
demonstrated
that
reliable
model
predicting
value
geopolymer-stabilized
soil.
based
on
obtained
values
RMSE
=
0.9815
R2
0.9757
set,
respectively,
approach
showed
provide
excellent
results
unknown
within
ranges
examined
parameters.
Finally,
SHapley
Additive
exPlanations
(SHAP)
analysis
implemented
identify
most
influential
inputs
quantify
their
behavior
input
variables
Canadian Geotechnical Journal,
Journal Year:
2024,
Volume and Issue:
61(4), P. 649 - 667
Published: Feb. 2, 2024
Upstream
tailings
dams
are
high-risk
structures
that
have
experienced
several
failures
worldwide,
particularly
with
iron
ore
(IOT).
In
this
study,
new
disposal
methods/techniques,
such
as
cement-stabilized
dry
stacking,
discussed
provide
enhanced
mechanical
behavior
while
reducing
failure
risks.
Alkali-activated
materials
used
cementing
agents
due
to
their
and
environmental
advantages
compared
ordinary
Portland
cement.
This
study
evaluates
the
microstructural
of
IOT
stabilized
an
alkali-activated
cement
(AAC)
composed
two
by-products
from
beneficiation
process,
metakaolin
sodium
silicate,
tested
under
plane
strain
conditions.
Simple
shear
tests
analysis
were
performed.
Mixtures
produced
0%,
1%,
3%,
5%
AAC
examine
influence
variables
on
strength
deformability
parameters
undrained
The
mixtures
3%
showed
greatest
impact
strength;
however,
addition
1%
was
able
reduce
positive
pore-pressure
generation.
Cementitious
bounds
evidenced
by
forming
a
aluminosilicate
hydrate
gel.
studied
effective
in
stabilizing
IOT,
even
at
small
contents.
Alexandria Engineering Journal,
Journal Year:
2024,
Volume and Issue:
91, P. 321 - 333
Published: Feb. 17, 2024
Maintaining
and
enhancing
soil
stability
for
electrical
pylon
installation
is
very
vital
to
provide
an
uninterrupted
energy
supply.
Conventionally,
the
of
maintained
using
chemical
stabilization
technique,
which
has
its
limitations,
not
environmentally
friendly,
may
a
stable
condition
in
longer
term,
prone
disruption.
Therefore,
this
work,
more
sustainable
approach
suggested
where
bio-mediated
technique
microbes
from
biological
degradations
vegetables
are
used
integrate
with
polyethylene
terephthalate
(PET)
plastic
waste
as
stabilizer.
The
findings
triaxial
shear
test
showed
that
treated
enhanced
soil's
resistance
shearing
forces
by
33%
due
bridging
effect
interlocking.
combination
20%
fermented
grout
liquid
1%
PET
improved
cohesion
significantly.
slope
also
proved
additions
could
improve
factor
safety
(FOS)
up
81.47%
exceed
minimum
requirement
design
compared
untreated
slope.
results
influence
different
variations
addition
effective
method
engineering
properties
