Enhancing bending performance of cemented lithium feldspar tailings backfill with 3D printing polymer lattices: effects of unit shapes and materials
Case Studies in Construction Materials,
Год журнала:
2025,
Номер
unknown, С. e04463 - e04463
Опубликована: Март 1, 2025
Язык: Английский
Effect of 3D-printed polymer with negative Poisson's ratio structure on the mechanical characteristics of cemented tailings backfill
Case Studies in Construction Materials,
Год журнала:
2025,
Номер
unknown, С. e04665 - e04665
Опубликована: Апрель 1, 2025
Язык: Английский
Effects of Superfine Cement on Fluidity, Strength, and Pore Structure of Superfine Tailings Cemented Paste Backfill
Minerals,
Год журнала:
2024,
Номер
15(1), С. 24 - 24
Опубликована: Дек. 27, 2024
Advancements
in
mine
tailings
treatment
technology
have
increased
the
use
of
superfine
tailings,
but
their
extremely
fine
particle
size
and
high
specific
surface
area
limit
performance
cemented
paste
backfill
(STCPB).
This
study
investigates
effects
using
cement
as
a
binder
to
enhance
fluidity,
strength,
pore
structure
STCPB.
The
influence
water
film
thickness
(WFT)
on
STCPB
is
also
examined.
results
show
that
cement-to-tailings
ratio
(CTR)
solid
content
(SC)
significantly
affect
spread
diameter
(SD)
unconfined
compressive
strength
(UCS),
following
distinct
linear/logarithmic
exponential
trends,
respectively.
WFT
has
an
impact
SD
non-linear
effect
UCS,
enhancing
at
low
levels
(0
μm
<
0.0071
μm)
balancing
hydration
flowability
moderate
(0.0071
0.0193
reducing
(WFT
>
μm).
Additionally,
improves
by
porosity
macropore
content.
These
findings
provide
valuable
insights
into
optimizing
for
enhanced
sustainability
backfilling
applications.
Язык: Английский
Research into cemented paste backfill properties and options for its application: Case study from a Kryvyi Rih Iron-ore Basin, Ukraine
Mining of Mineral Deposits,
Год журнала:
2024,
Номер
18(4), С. 162 - 179
Опубликована: Дек. 30, 2024
Purpose.
The
purpose
is
to
conduct
experimental
research
on
a
set
of
properties
cemented
paste
backfill
mass
based
number
natural-technogenic
materials
the
Kryvyi
Rih
Iron-ore
Basin
with
aim
its
further
use
in
technologies
for
restoring
heavily
disturbed
earth's
surface
by
complex
iron
ore
mining.
Methods.
A
comprehensive
toolkit
used:
X-ray
fluorescence
and
diffraction
analyses
study
chemical
mineralogical
composition
components,
conductometer
measurements
electrical
conductivity
mixtures
during
their
hardening,
laboratory
studies
formulations
determination
physical-mechanical
characteristics
using
hydraulic
press,
an
analytical
determine
suitable
regions
backfilling,
taking
into
account
presence
technogenic
cavities,
tailings
dumps
binder
materials.
Findings.
It
has
been
found
that
paste-like
homogeneous
state
mixture
beneficiation
from
mining
processing
plants
Ukraine
achieved
at
solid
part
content
about
73-75%,
which
provides
optimal
balance
between
flowability
mechanical
strength.
patterns
strength
changes
depending
material
dosage,
hardening
period
pure
cement
different
variations
alternative
determined.
have
revealed
correlation
parameters.
Originality.
method
predicting
early
late
backfilling
developed,
identified
mixture,
time
reach
peak,
stages
hardening.
knowledge
understanding
conditions
under
influence
climatic
environmental
developed.
Practical
implications.
conducted
useful
designing
technology
earth’s
surface,
namely,
failure
zones
mines,
underground
unfilled
cavities
closed
mines
mined-out
spaces
quarries.
concept
implementing
western
city
expected
contribute
environmental,
economic
social
development
region.
Язык: Английский