Minerals,
Journal Year:
2024,
Volume and Issue:
15(1), P. 24 - 24
Published: Dec. 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.
Case Studies in Construction Materials,
Journal Year:
2024,
Volume and Issue:
21, P. e03450 - e03450
Published: July 1, 2024
Alkaline
rice
straw
fibers
(ARSF),
as
a
widely
available
and
recyclable
plant
fiber
source,
can
provide
new
insights
for
improving
the
mechanical
properties
of
backfill
treatment
agricultural
waste
resources
research.
Different
amounts
ARSF
were
prepared
to
enhance
cemented
lithium
mica
tailings
(CLMTB),
uniaxial
compression
strength
(UCS)
tests
Brazilian
splitting
tensile
conducted
study
influence
on
static
CLMTB
samples.
Firstly,
flowability
mortars
with
different
content
was
tested,
results
showed
that
decreased
by
maximum
5.4
%,
which
met
construction
requirements
cement
mortar
in
process.
The
UCS
an
increasing
trend
then
reduced
increased
content,
0.15
%
being
optimal
showing
increase
14.2
%.
Under
loading
conditions,
gradually
0.60
content.
samples
exponential
growth
curing
age.
Additionally,
there
linear
functional
relationship
between
age
experimental
indicate
improved
toughness
changed
failure
mode
In
meantime,
it
residual
bearing
capacity
peak
strain
