Geopolymers Manufactured by the Alkali Activation of Mining and Ceramic Wastes Using a Potential Sustainable Activator from Olive Stone Bottom Ashes
Materials,
Год журнала:
2025,
Номер
18(3), С. 688 - 688
Опубликована: Фев. 4, 2025
The
reuse
of
by-products
as
alternative
raw
materials
to
traditional
construction
is
required
in
order
ensure
sustainable
development
the
sector
and
a
significant
important
focus
fields
science.
This
study
developed
geopolymers
using
from
mining,
ceramics,
olive
industries,
including
slate
stone
cutting
sludge
(SSCS)
chamotte
(CH)
aluminosilicate
sources,
biomass
bottom
ash
(OSBA)
an
alkaline
activator
with
sodium
silicate.
A
key
novelty
research
lies
use
SSCS,
underexplored
by-product
geopolymerization
studies,
viable
source.
were
prepared
varying
weight
ratios
CH,
OSBA/Na₂SiO₃
(1.7,
1.9,
2.2,
2.4).
Physical
mechanical
tests
determined
optimal
formulation,
while
FTIR
SEM
analyses
revealed
material’s
chemical
structural
evolution.
analysis
detected
quartz
carbonate
phases,
indicating
incomplete
dissolution
formation
during
calcination.
dense
microstructure
reduced
porosity
enhanced
samples
higher
OSBA
content.
geopolymer
(60%
OSBA,
30%
ratio
2.2)
achieved
compressive
strength
33.1
MPa
after
28
days.
These
findings
demonstrate
feasibility
producing
promoting
industrial
alternatives
conventional
binders.
Язык: Английский
Study of Novel Geopolymer Concrete Prepared with Slate Stone Cutting Sludge, Chamotte, Steel Slag and Activated with Olive Stone Bottom Ash
Materials,
Год журнала:
2025,
Номер
18(9), С. 1974 - 1974
Опубликована: Апрель 26, 2025
The
expansion
of
the
construction
sector
has
contributed
to
depletion
raw
materials
and
an
increased
demand
for
resources;
therefore,
sustainable
approaches
are
required
satisfy
demand.
present
study
explores
development
geopolymers
by
utilizing
industrial
by-products
from
mining,
ceramics,
olive
oil
production,
steel
manufacturing.
Specifically,
slate
stone
cutting
sludge
(SSCS)
chamotte
(CH)
used
as
aluminosilicate
precursors,
with
biomass
bottom
ash
(OSBA)
acting
alkaline
activator,
along
sodium
silicate,
granulated
slag
(SGS)
incorporated
aggregate.
Novel
were
prepared
consistent
proportions
SSCS
OSBA
while
varying
CH
content
10
2
wt.%.
SGS
proportion
was
adjusted
35
50
wt.%,
different
Na2SiO3/OSBA
ratios
(0.35,
0.31,
0.19,
0.08)
examined.
To
identify
optimal
mix,
a
series
physical
mechanical
tests
conducted,
complemented
FTIR
SEM
analysis
evaluate
chemical
microstructural
changes.
best-performing
formulation
achieved
compressive
strength
42.8
MPa
after
28
days
curing.
identified
quartz
carbonate
phases,
suggesting
that
did
not
fully
dissolve
carbonates
formed
during
heating
process.
examination
mixture
indicated
incorporation
(up
45
wt.%)
facilitated
creation
compact,
low-porosity
structure.
EDX
results
revealed
presence
Ca-,
Na-,
Si-,
Al-,
K-enriched
supporting
formation
(N,
C)-A-S-H
gel
networks.
These
demonstrate
potential
SSCS,
CH,
OSBA,
create
geopolymer
concretes,
showcasing
viability
using
eco-friendly
substitutes
traditional
materials.
Язык: Английский
Ecological mortars produced from sustainable hydrated lime obtained from biomass ash
Next Sustainability,
Год журнала:
2024,
Номер
5, С. 100067 - 100067
Опубликована: Авг. 15, 2024
Язык: Английский
Utilization of Municipal Solid Waste Incineration (MSWIFA) in Geopolymer Concrete: A Study on Compressive Strength and Leaching Characteristics
Materials,
Год журнала:
2024,
Номер
17(18), С. 4609 - 4609
Опубликована: Сен. 20, 2024
This
study
explores
the
utilization
of
municipal
solid
waste
incineration
fly
ash
(MSWIFA)
in
geopolymer
concrete,
focusing
on
compressive
strength
and
heavy
metal
leachability.
MSWIFA
was
sourced
from
a
Shenzhen
plant
pretreated
by
washing
to
remove
soluble
salts.
Geopolymer
concrete
prepared
incorporate
with
washed
or
unwashed
tested
under
different
pH
conditions
(2.88,
4.20,
10.0).
Optimal
achieved
Si/Al
ratio
1.5,
water/Na
10,
sand-binder
0.6.
The
pretreatment
significantly
enhanced
strength,
particularly
alkaline
conditions,
GP-WFA
(washed
MSWIFA)
exhibiting
49.6%
increase
compared
21.3%
GP-FA
(unwashed
MSWIFA).
Additionally,
GP-WFA’s
reached
41.7
MPa,
comparable
that
control
(GP-control)
at
43.7
MPa.
Leaching
tests
showed
acidic
(pH
2.88)
promoted
leaching,
which
increased
over
leaching
time,
while
an
environment
reduced
leachability
metals.
These
findings
highlight
potential
using
promoting
sustainable
construction
practices,
conditions.
Язык: Английский