Minerals,
Год журнала:
2023,
Номер
13(4), С. 564 - 564
Опубликована: Апрель 17, 2023
Phosphoric
acid-based
porous
geopolymers
were
prepared
by
two
different
foaming
agents
(H2O2
and
Al
powder)
with
phosphoric
acid
as
the
activator.
High-magnesium
nickel
slag
(HMNS)
fly
ash
(FA)
precursor
combination.
The
effects
of
agent
types
contents
on
properties
HMNS-FA-phosphate-based
investigated
in
terms
dry
density,
pore
structure,
compressive
strength,
thermal
conductivity,
water
absorption.
phase
was
analyzed
x-ray
diffraction
(XRD)
Fourier
transform
infrared
spectroscopy
(FT-IR).
It
found
that
both
could
successfully
prepare
geopolymers,
strength
density
gradually
decreased
low-thermal
conductivity
absorption
increased
increase
content.
formed
structures
inside
but
did
not
affect
phases
geopolymerization
reactions.
This
study
demonstrates
can
be
used
to
for
application
phosphate-activated
direction
refractory
materials.
E3S Web of Conferences,
Год журнала:
2023,
Номер
430, С. 01203 - 01203
Опубликована: Янв. 1, 2023
This
article
investigates
the
possible
synergy
between
geopolymers
and
plastics
as
a
method
for
sustainable
composite
materials,
addressing
growing
worldwide
need
environmentally
responsible
solutions.
Geopolymers,
which
provide
low-carbon
alternatives
to
traditional
building
are
being
studied
alongside
plastics,
recognised
their
flexibility
lightweight
properties.
The
research
emphasises
ability
of
this
attain
increased
mechanical,
thermal,
chemical
qualities
by
investigating
molecular-level
interaction
processes,
enhanced
material
properties,
applications
in
diverse
sectors.
Furthermore,
assesses
environmental
consequences,
such
decreased
carbon
emissions
energy
usage,
while
also
analysing
manufacturing
scaling
problems.
work
lays
way
unique
route
science,
poised
greatly
contribute
more
resilient
built
environment,
giving
insights
into
both
present
accomplishments
future
possibilities.
Cleaner Materials,
Год журнала:
2023,
Номер
9, С. 100207 - 100207
Опубликована: Сен. 1, 2023
3D
printing
process
has
gained
significant
attention
because
of
its
ability
to
manufacture
complicated
geometries.
The
also
a
lot
potential
for
reducing
plastic
waste.
In
recent
years,
the
use
carbon
fiber
become
increasingly
popular
as
reinforcement
material
3D-printed
objects.
combination
waste
and
create
high-strength
lightweight
structures
various
applications.
This
presented
paper
reviews
advancements
in
using
waste,
focusing
specifically
on
fused
deposition
modeling
(FDM)
selective
laser
sintering
(SLS)
methods
composites.
study
highlights
important
role
materials
process,
especially
regarding
difficulties
producing
non-recyclable
plastics.
composite
processes
industries
that
utilize
these
technologies.
One
key
aspects
article
is
exploration
impact
environment
through
recycling
shall
be
helpful
demonstration
turning
into
durable,
functional
objects
while
minimizing
environmental
impact.
Materials,
Год журнала:
2023,
Номер
16(6), С. 2400 - 2400
Опубликована: Март 17, 2023
Commercial
sodium
hydroxide
(NaOH)
and
silicate
(SS)
have
remained
two
of
the
leading
alkaline
activators
widely
used
in
producing
geopolymer
concrete,
despite
some
identified
negatives
regarding
their
availability
additional
CO2
emissions
relating
to
overall
manufacturing
process.
This
study
reports
viability
developing
concrete
using
a
laboratory-synthesised
silica
fume
(SF)-derived
SS
solution
combination
with
NaOH
at
molarity
10M
as
an
alternative
binary
alkali-alkaline
activator
Ground
Granulated
Blast
Furnace
slag
(GGBS).
The
use
SF
development
geoolymer
will
pave
way
for
quality
usage
other
high-silica
content
by-products
from
nature,
industry,
agriculture.
In
currently
reported
proof
concept,
four
batches
were
produced
different
activator/precursor-A/P
ratios
(0.5
0.9)
NaOH-SS/SH
volume
(0.8/1.2
1.2/0.8),
establish
impact
on
engineering
performance.
Two
controls
adopted
ordinary
mixes.
performance
was
assessed
slump
compaction
index
(CI)
tests,
while
Unconfined
Compressive
Strength
(UCS)
tensile
splitting
(TS)
tests
measured
curing
ages
accordance
appropriate
standards.
results
indicated
reduction
values
A/P
ratio
decreased,
CI
showed
reversal
trend
slump.
Consequently,
mix
GC2
attained
highest
UCS
strength
gain
(62.6
MPa),
displaying
superiority
alkali
activation
polymerisation
process
over
CSH
gel.
Furthermore,
variation
more
pronounced
than
SS/SH
due
its
vital
contribution
geopolymerisation
Cleaner Materials,
Год журнала:
2024,
Номер
12, С. 100251 - 100251
Опубликована: Май 16, 2024
3D
Printing
Concrete
(3DPC)
represents
an
innovative
advancement
in
construction,
enabling
the
creation
of
intricate
and
custom
structures
while
simultaneously
reducing
material
waste
expediting
construction
schedules.
This
comprehensive
review
delves
into
latest
advancements
3DPC
technology
its
capacity
to
reshape
building
sectors.
The
paper
explores
recent
progress
printing
systems,
methodologies,
materials,
applications.
It
places
particular
emphasis
on
diverse
parameters
concrete
mix
proportions
that
wield
substantial
influence
over
process.
Furthermore,
this
study
utilization
materials
as
Supplementary
Cementitious
Materials,
i.e.,
nano
clay,
nano-silica,
ground
granulated
blast-furnace
slag,
enhance
properties
3DPC.
discussion
extends
consideration
a
low-carbon
concrete,
outlining
both
advantages
challenges
associated
with
practical
implementation.
Additionally,
presents
case
studies
large-scale
applications
structures,
discussing
their
economic
environmental
outcomes,
particularly
when
incorporating
Through
analysis,
highlights
potential
revolutionize
practices
anticipates
further
dynamic
field.
Journal of Cleaner Production,
Год журнала:
2024,
Номер
468, С. 143138 - 143138
Опубликована: Июль 14, 2024
This
study
aims
to
conduct
comprehensive
assessment
of
engineering
and
environmental
attributes
geopolymer
pervious
concrete
with
natural
recycled
aggregate.
Pervious
mixtures
were
fabricated
different
paste
aggregate
types
for
laboratory
characterization
at
scales.
As
compared
traditional
cement
concrete,
mechanical
strengths
increase
significantly
when
either
coarse
(NCA)
or
(RCA)
is
used.
The
replacement
NCA
RCA
reduces
strength
but
the
advantage
maintained.
Micro-scale
observations
indicate
that
pastes
have
better
bonding
RCA.
Life-cycle
(LCA)
results
show
lower
global
warming
potential
(GWP)
eutrophication
(EP),
greater
energy
consumption
(EC)
acidification
(AP)
are
achieved
by
geopolymer-based
concrete.
Photochemical
ozone
creation
(POCP)
found
fly
ash-based
smaller
metakaolin-based
use
brings
benefit
raw
materials
transportation
stages,
in
addition
avoiding
landfilling
preserving
achieves
best
overall
performance
considering
multi-criteria
indicators
regardless
type.
