From marble waste to monocarboaluminate binder: role of sodium aluminate composition, calcined clay type, and curing temperature
Journal of Sustainable Cement-Based Materials,
Journal Year:
2024,
Volume and Issue:
13(8), P. 1107 - 1119
Published: June 3, 2024
This
study
focuses
on
the
synthesis
of
a
monocarboaluminate
(MCA)-based
binder
by
treating
marble
waste
(MW)
powder
with
sodium
aluminate
(SA).
The
aim
is
to
investigate
influence
various
parameters,
including
alumina
modulus
(MA)
SA,
different
contents
calcined
clays
varying
levels,
and
curing
temperatures,
performance
phase
composition
resulting
binder.
results
demonstrate
that
combination
SA
MW
leads
formation
an
MCA-based
binder,
which
exhibits
high
compressive
strength
up
28
MPa
after
seven
days
curing.
Additional
phases
such
as
gibbsite,
pirssonite,
gaylussite
are
observed,
indicating
occurrence
cationic
exchange
reaction
between
confirmed
X-ray
diffraction
(XRD)
Fourier
transform
infrared
spectroscopy
(FT-IR).
stability
primarily
influenced
MA
value,
higher
values
associated
greater
stability.
Regardless
type
clay
used,
incorporating
in
calcium
silicate
hydrate
(CSAH)
alongside
MCA,
contributing
improved
hardened
over
time.
Notably,
content
highest
at
all
ages.
Furthermore,
increasing
temperature
100
°C
significantly
enhances
early
strength,
correlates
kotoite
expense
MCA
phase.
Language: Английский
An overview of the critical influential parameters on the performance of limestone calcined clay cement paste, mortar, and concrete
Construction and Building Materials,
Journal Year:
2024,
Volume and Issue:
444, P. 137615 - 137615
Published: Aug. 13, 2024
Language: Английский
Evaluating the dual role of sea water and metakaolin in the performance, efflorescence mitigation, and phase composition of sodium silicate-activated marble powder
Developments in the Built Environment,
Journal Year:
2024,
Volume and Issue:
21, P. 100596 - 100596
Published: Dec. 26, 2024
Language: Английский
The role of low-quality calcined clay in enhancing the performance of cement mortar exposed to normal and aggressive media
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Oct. 11, 2024
This
study
focuses
on
the
role
of
low-quality
calcined
Fanja
(FNJ)
clay
in
enhancing
behavior
cured
cement
mortar
(CM)
and
its
resistivity
to
chloride
sulfuric
acid
attack.
Ordinary
Portland
was
replaced
with
different
quantities
(10%,
25%,
35%,
50%
by
weight)
FNJ,
which
at
temperatures
(620
°C,
760
900
°C).
After
28
days
curing,
all
hardened
mortars
were
immersed
5%
for
up
12
weeks.
Additionally,
a
rapid
permeability
test
conducted
91-day
CM
CM-FNJ
samples
evaluate
affinity
FNJs
retard
diffusion
into
CM.
The
results
showed
that
containing
FNJ900
better
physical
mechanical
properties
than
control
sample,
while
NFJ760
recorded
nearly
similar
performance
as
CM-NFJ900.
In
contrast,
CM-FNJ620
mixtures
lower
those
other
mixtures.
addition
pozzolanic
reactivity
clay,
presence
hematite
strongly
contributed
increasing
through
forming
calcium
ferrosilicate
hydrate
binding
phase,
confirmed
X-ray
diffraction.
Moreover,
existence
increased
against
attack
it
acts
buffer
an
acidic
medium.
Compared
CM-FNJ900,
CM-FNJ760
is
recommended
use
exhibited
higher
strength
activity
index
comparable
resistance
accelerated
accompanied
energy
demand
CO2
emission,
achieving
concept
'sustainability'.
Language: Английский