Solid waste binder cemented dihydrate phosphogypsum aggregate to prepare backfill material
Minerals Engineering,
Год журнала:
2025,
Номер
226, С. 109249 - 109249
Опубликована: Март 15, 2025
Язык: Английский
Trends and Applications of Green Binder Materials for Cemented Paste Backfill Mining in China
Minerals,
Год журнала:
2025,
Номер
15(2), С. 97 - 97
Опубликована: Янв. 21, 2025
The
backfill
binder
material
is
the
key
to
cost
and
performance
of
cemented
paste
backfill.
This
study
aims
understand
current
situation
metal
ore
binders,
identify
industry
challenges,
inspire
research
ideas,
explore
development
directions.
Current
investigates
trends
developments
binders
through
literature
review,
experience
summary,
field
research,
statistical
analysis,
other
methods.
Firstly,
main
types
are
summarized,
including
cement,
metallurgical
slag,
thermal
chemical
tailings
binders.
Secondly,
progress
regarding
reactivity
activation,
hydration
mechanism,
harmful
ion
solidification,
energy
conservation,
carbon
reduction
summarized.
Thirdly,
three
industrial
applications
new
introduced
Cement
still
most
common,
followed
by
slag
powder
binder.
cases
steel
semi-hydrated
phosphogypsum
have
shown
significant
effects.
Solid
waste-based
materials
gradually
replacing
which
a
trend.
Finally,
further
discussed,
modeling
simulation,
properties
under
extreme
environments,
hardening
process
control,
technical
standards
for
work
provides
reference
basis
promoting
green
efficient
sustainable
development.
Язык: Английский
Synergy effects of phosphogypsum on the hydration mechanism and mechanical properties of alkali-activated slag in polysilicon sludge solidification
Construction and Building Materials,
Год журнала:
2024,
Номер
456, С. 139386 - 139386
Опубликована: Ноя. 28, 2024
Язык: Английский
Research on the performance of low carbon mine filling cementing material based on red mud: a comprehensive review
Case Studies in Construction Materials,
Год журнала:
2025,
Номер
unknown, С. e04375 - e04375
Опубликована: Фев. 1, 2025
Язык: Английский
Adding silica fume and calcium carbide residue to enhance the performance of β-hemihydrate phosphogypsum for backfill mining
Construction and Building Materials,
Год журнала:
2025,
Номер
467, С. 140420 - 140420
Опубликована: Фев. 13, 2025
Язык: Английский
Improving the performance of phosphogypsum-based cementitious materials by controlling water consumption and introducing CaCl2
Sustainable Chemistry and Pharmacy,
Год журнала:
2025,
Номер
44, С. 101971 - 101971
Опубликована: Март 7, 2025
Язык: Английский
Synthesis and Property Characterization of Low-Activity Waste-Derived Quaternary Cementitious Materials
Buildings,
Год журнала:
2025,
Номер
15(9), С. 1426 - 1426
Опубликована: Апрель 23, 2025
The
environmental
risks
associated
with
industrial
solid
wastes—fly
ash
(FA),
red
mud
(RM),
carbide
slag
(CS),
and
steel
(SS)—are
amplified
by
their
massive
global
accumulation.
This
study
developed
a
quaternary
cementitious
system
using
low-activity
wastes—FA,
RM,
CS,
SS—as
alternatives
to
high-reactivity
ground
granulated
blast
furnace
slag.
hydration
behavior,
mechanical
properties,
microstructure
were
investigated,
along
the
effects
of
Ca(ClO)2
Ca3(PO4)2
as
calcium
additives.
Fresh
properties
(fluidity,
pH,
electrical
conductivity),
compressive
strength,
drying
shrinkage
evaluated,
while
SEM-EDS,
XRD,
FTIR,
TG-DSC
analyzed
microstructural
evolution.
results
show
that
FA-RM
alone
failed
solidify,
but
CS
enhanced
hydration,
reducing
fluidity
increasing
SS
improved
thermal
stability
micro-aggregate.
optimized
FA-RM-CS-SS
achieved
16.7
MPa
at
90
days.
accelerated
C-S-H
gel
formation,
whereas
stabilized
matrix
via
hydroxyapatite
precipitation,
mitigating
shrinkage.
approach
enables
simultaneous
waste
utilization,
Cl-
P-containing
pollutant
immobilization,
offering
sustainable
strategy
for
eco-friendly
construction
materials.
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
Investigation of the performance and life cycle assessment of alkali-activated sintered sludge-slag-based permeable concrete
Frontiers in Materials,
Год журнала:
2024,
Номер
11
Опубликована: Ноя. 19, 2024
As
urbanization
continues
to
accelerate,
the
application
of
permeable
concrete
is
becoming
an
increasingly
prevalent
practice.
Nevertheless,
carbon
dioxide
emission
issue
associated
with
traditional
cannot
be
overlooked.
In
this
study,
alkali-activated
sintered
sludge
and
slag
were
employed
as
raw
materials
prepare
sludge-slag-based
concrete.
The
effects
calcination
temperature,
content,
binder-to-aggregate
ratio
on
compressive
strength,
porosity,
permeability
coefficient
investigated
through
implementation
one-way
experiments.
formation
mechanism
was
analyzed
using
scanning
electron
microscopy-energy
dispersive
spectroscopy
(SEM-EDS),
a
assessment
performed.
findings
indicated
that
increase
in
content
resulted
notable
decline
28-day
accompanied
by
reduction
Ca/Si
C-A-S-H
hydration
products,
from
1.08
0.35.
Conversely,
demonstrated
abiotic
losses
declined
markedly
effectively
mitigating
burden
construction
materials.
Язык: Английский