Exploring Pore Structure Features, Crack Propagation and Failure Behavior of Fiber Reinforced Foam Tail Fill by CT Imaging and 3D Reconstruction
Minerals,
Journal Year:
2025,
Volume and Issue:
15(4), P. 354 - 354
Published: March 28, 2025
Fiber-reinforced
foam
tail
fill
(FRFTF)
has
been
widely
investigated
in
the
field
of
foamed
backfill
because
its
high
strength
and
toughness.
However,
fiber
enhancement
damage
mechanism
FRFTF
still
need
to
be
further
explored.
The
pore
crack
growth
particle
structure
distribution
features
three
kinds
basalt
(B),
polypropylene
(PP),
glass
(G)
fibers
on
were
porosity,
fracture,
sphericity,
fractal
dimension
quantitatively
probed
by
X-ray
micro-computed
tomography
combined
with
uniaxial
compression
(UCS)
SEM,
while
spatial
porosity
fracture
was
analyzed
3D
reconstruction
technology.
Laboratory
findings
demonstrate
that
increases
from
1.46%
4.74%
increase
content
0.3%
0.9%.
This
is
related
weak
adhesion
between
fiber.
Adding
blowing
agents
could
well
enhance
morphology
FRFTF,
reduce
number
principal
cracks
trapped
within
specimens,
maintain
structure’s
integrity.
relationship
FRFTF’s
UCS
value
porosity/fracture
closely
nature
quantity
fibers,
overall
performance
best
among
others.
As
quality
shifts
0.9%,
specimen’s
adversely
correlated
porosity.
In
current
study,
internal
connection
FRFTFs
are
studied
microscopically.
combination
macro-mechanical
microscopic
provides
a
new
research
idea
for
materials
during
implementation
fully
mechanized
mining
technology
hard
rock
mines.
Language: Английский
Evaluation of Leaching Characteristics of Heavy Metal Ions from Red Mud–Graphite Tailings
Toxics,
Journal Year:
2025,
Volume and Issue:
13(3), P. 211 - 211
Published: March 14, 2025
The
rapid
growth
of
aluminum
and
graphite
industries
has
generated
substantial
stockpiles
red
mud
tailings,
which
pose
environmental
risks
due
to
their
high
heavy
metal
content
potential
for
soil
water
contamination.
This
study
investigated
the
leaching
behavior
metals
from
these
materials
post-stabilization
using
cement
a
sulfonated
oil-based
ion
curing
agent,
thereby
evaluating
suitability
safe
reuse.
Semi-dynamic
experiments
were
employed
measure
release,
supplemented
by
kinetic
modeling
discern
key
mechanisms.
findings
indicated
that
concentrations
in
leachates
consistently
below
regulatory
standards,
with
dynamics
influenced
dual
mechanisms:
diffusion
ions
surface
chemical
reactions.
A
coefficient-based
analysis
further
suggested
low
leachability
indices
all
metals,
confirming
effective
immobilization.
These
results
suggest
agent-stabilized
mud–graphite
tailing
composites
reduce
possess
characteristics
favorable
resource
recovery,
thus
supporting
sustainable
use
industrial
applications.
Language: Английский