Materials,
Journal Year:
2025,
Volume and Issue:
18(5), P. 1076 - 1076
Published: Feb. 27, 2025
This
paper
focuses
on
the
alkaline
activation
of
municipal
waste
incineration
(MSWI)
bottom
ash
to
create
a
dense,
non-porous
composite
structure.
Normally,
high
pH
solutions
are
used
activate
MSWI
ash,
but
this
has
side
effect
creating
residual
effects
in
ash.
Due
uniqueness
process,
retains
metallic
aluminum,
which
reacts
with
alkali
produce
hydrogen
gas,
forms
porous
structure
sample
during
hardening
composite.
study
demonstrates
method
eliminating
by
lowering
activator
below
12.5.
An
alkali-activated
binder
was
prepared
from
ground
as
precursor
and
triple
activator:
NaOH
solution,
soluble
glass
(SG)
silica
gel
(SW).
The
highest
compressive
strengths
about
20
MPa
were
achieved
for
activators
such
sodium
hydroxide,
waste.
Materials,
Journal Year:
2024,
Volume and Issue:
17(8), P. 1839 - 1839
Published: April 16, 2024
In
the
present
work,
development
of
geopolymeric
materials
with
Na
or
K
based
on
industrial
kaolin
samples,
variable
kaolinite
content
and
alkaline
silicates,
is
studied.
XRF,
XRD,
FTIR
SEM-EDS
have
been
used
as
characterization
techniques.
Three
ceramic
two
from
Algeria
one
Charente
(France),
considered.
particular,
chemical
mineralogical
revealed
elements
distinct
Si
Al,
pure
secondary
minerals.
Metakaolinite
was
obtained
by
grinding
sieving
raw
at
80
μm
then
thermal
activation
750
°C
for
1
h.
This
metakaolinite
has
a
base
material
to
obtain
geopolymers,
using
this
purpose
different
formulations
silicates
NaOH
KOH
Si/K
molar
ratios.
The
formation
hydroxylation
polycondensation
characterized
Si/Al
ratios,
depending
original
content,
demonstrated.
Sodium
carbonates
detected
XRD
FTIR,
confirmed
SEM-EDS,
in
these
geopolymer
being
products
carbonation.
Materials,
Journal Year:
2025,
Volume and Issue:
18(5), P. 1076 - 1076
Published: Feb. 27, 2025
This
paper
focuses
on
the
alkaline
activation
of
municipal
waste
incineration
(MSWI)
bottom
ash
to
create
a
dense,
non-porous
composite
structure.
Normally,
high
pH
solutions
are
used
activate
MSWI
ash,
but
this
has
side
effect
creating
residual
effects
in
ash.
Due
uniqueness
process,
retains
metallic
aluminum,
which
reacts
with
alkali
produce
hydrogen
gas,
forms
porous
structure
sample
during
hardening
composite.
study
demonstrates
method
eliminating
by
lowering
activator
below
12.5.
An
alkali-activated
binder
was
prepared
from
ground
as
precursor
and
triple
activator:
NaOH
solution,
soluble
glass
(SG)
silica
gel
(SW).
The
highest
compressive
strengths
about
20
MPa
were
achieved
for
activators
such
sodium
hydroxide,
waste.
