Advances in Civil Engineering,
Journal Year:
2025,
Volume and Issue:
2025(1)
Published: Jan. 1, 2025
Gold
mine
tailings
(GMTs)
pose
significant
environmental
challenges,
and
while
alkali‐activated
materials
(AAMs)
have
been
widely
used
as
sustainable
alternatives
to
Portland
cement
for
stabilizing
geotechnical
materials,
further
research
is
needed
optimize
their
composition
performance,
particularly
by
incorporating
traditional
industrial
waste
residues
develop
composite
(CAAMs)
with
improved
mechanical
properties
reduced
impact.
Different
CAAMs
admixtures
(i.e.,
0%,
3%,
5%,
8%)
gold
were
prepared,
the
samples
solidified
under
saturated
water
no
air.
In
order
investigate
characteristics
of
CAAMs‐stabilized
GMTs,
laboratory
direct
shear
tests
carried
out
on
after
curing
them
3,
7,
14,
28
days,
respectively.
The
test
results
showed
that
extension
time,
brittleness
increased,
stress–displacement
curves
all
cured
specimens
changed
from
plateau
type
peak
type.
Both
time
content
are
conducive
improving
strength
GMTs
samples,
but
increase
rate
decreased
vertical
confining
stress
increased.
Furthermore,
influence
increment
was
larger
than
periods.
exponential
growth
model
could
well
describe
change
periods
different
stresses.
paper
can
provide
theoretical
support
application
enhance
stability
dams.
Reviews in Environmental Science and Bio/Technology,
Journal Year:
2023,
Volume and Issue:
22(4), P. 1059 - 1091
Published: Oct. 15, 2023
Abstract
Soil
erosion
is
a
complex
natural
process
that
occurs
by
either
individual
or
combined
actions
of
wind,
hydraulic
currents,
waves,
and
rain.
This
study
comprehensively
reviews
biocementation-based
soil
stabilisation
techniques
for
developing
erosion-resilient
landforms
through
an
ecologically
conscious
strategy.
The
different
pathways
biocementation
occurring
in
nature
are
discussed
with
focused
view
on
the
microbially
induced
carbonate
precipitation
(MICP)
technique.
MICP
relies
biogenic
calcium
(CaCO
3
)
via
urea
hydrolysis
route
to
bind
grains.
kinetics
factors
affecting
succinctly
highlight
practical
challenges
associated
biocementation.
emphasises
influence
resistance
(aeolian
hydraulic)
geotechnical
properties
soils.
critical
assessment
previous
studies
revealed
aeolian
can
be
effectively
controlled
small
moderate
quantity
CaCO
(2%
10%
weight).
marginally
influences
conductivity
soils
substantial
improvement
compressive
strength,
making
it
desirous
over
traditional
cementation
agents
control
due
limited
intervention
groundwater
flow.
However,
scientific
design
findings
laboratory-scale
pilot-scale
research
still
inconsistent
standardising
transition
towards
upscaling.
presents
insights
researchers
environmental,
geoenvironmental
engineering
domains
their
upcoming
tackle
required
upscaling
technology.
Biogeotechnics,
Journal Year:
2024,
Volume and Issue:
2(3), P. 100081 - 100081
Published: March 4, 2024
Bio-cemented
soils
can
exhibit
various
types
of
microstructure
depending
on
the
relative
position
carbonate
crystals
with
respect
to
host
granular
skeleton.
Different
microstructures
have
different
effects
mechanical
and
hydraulic
responses
material,
hence
importance
developing
capacity
model
these
microstructures.
The
discrete
element
method
(DEM)
is
a
powerful
numerical
for
studying
behaviour
materials
considering
grain-scale
features.
This
paper
presents
toolbox
that
be
used
generate
3D
DEM
samples
bio-cemented
specific
It
provides
flexibility
modelling
precipitates
in
form
contact
cementing,
grain
bridging
coating,
combinations
distribution
patterns.
algorithm
described
detail
this
paper,
impact
precipitated
carbonates
soil
evaluated.
results
indicate
patterns
affect
differently
microstructure,
suggesting
soils.
Buildings,
Journal Year:
2024,
Volume and Issue:
14(5), P. 1230 - 1230
Published: April 26, 2024
Loess
is
widely
distributed
in
Northwestern
China
and
serves
as
the
preferred
engineering
construction
material
for
anti-fouling
barriers.
Heavy
metal
contamination
soil
presents
significant
challenges
to
safety
of
vulnerable
loess
structures.
Hence,
there
an
urgent
need
investigate
impact
heavy
ions
on
their
percolation
performance.
In
order
effectiveness
microbially
induced
carbonate
precipitation
(MICP)
using
Sporosarcina
pasturii
(CGMCC1.3687)
bacteria
reducing
internal
seepage
erosion,
a
saturated
permeability
test
was
conducted
reshaped
under
constant
water
head
saturation
conditions.
The
response
deionized
(DW)
ZnCl2
solution
seepages
analyzed
by
monitoring
changes
cation
concentration
over
time,
measuring
Zeta
potential,
scanning
electron
microscopy
(SEM).
results
indicate
that
hydrolysis
Zn2+
creates
acidic
environment,
leading
dissolution
minerals
loess,
which
enhances
its
permeability.
adsorption
resulting
diffusion
double-layer
(DDL)
effect
reduce
thickness
layer
increase
number
free
channels.
Additionally,
exposed
significantly
increased
554.5%
compared
seepage.
Following
solutions,
micropore
area
ratio
were
observed,
decreasing
48.80%,
while
mesopore
areas
23.9%.
MICP
treatment
helps
erosion
volume
shrinkage
contaminated
loess.
Carbonate
resistance
absorbing
or
coating
fine
particles
creating
bridging
connections
with
coarse
particles.
These
research
offer
new
perspectives
enhancing
properties
presence
geochemical
mechanisms
involved.
