Buildings,
Journal Year:
2024,
Volume and Issue:
14(12), P. 3846 - 3846
Published: Nov. 30, 2024
The
preparation
of
ambient-cured
fly
ash-based
geopolymer
mortar
(FAGM)
with
high
strength
by
utilizing
the
chemical
reactivity
slag
is
key
to
realizing
sustainable
and
efficient
application
solid
waste
resources.
This
paper
investigates
influence
different
type
S95
contents
(0%,
5%,
10%,
15%,
20%,
25%,
30%)
on
fluidity,
setting
time,
mechanical
properties
FAGM
at
ambient
temperature.
direct
method
first
adapted
monitor
geopolymerization.
results
indicate
that
has
a
minimal
effect
fluidity
mortar,
while
time
decreases
compressive
increases
higher
content.
For
30%
content,
reduced
from
3160
min
140
min,
decrease
95.6%,
3-day
28-day
increase
1.5
MPa
34.7
33.5
73.4
MPa,
enhancements
2170.2%
110.3%,
respectively.
Slag
also
exerts
an
internal
curing
effect,
raising
temperature
accelerating
geopolymerization
process
ash,
thereby
improving
compactness
reducing
its
porosity.
approach
successfully
enables
production
high-strength,
FAGM.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Feb. 17, 2025
To
conduct
a
comparative
analysis
of
the
impacts
nanosilica
(NS)
and
carbon
nanotubes
(CNTs)
on
mechanical
properties
polyethylene
fiber-reinforced
cementitious
composites,
seven
groups
ECC
specimens
with
different
nanomaterial
contents
were
prepared.
The
uniaxial
compression
tensile
tests
conducted,
mineral
composition
was
analyzed
via
X-ray
diffraction,
microstructure
examined
using
scanning
electron
microscope.
results
show
that
both
types
nanomaterials
can
effectively
enhance
ECC.
Meanwhile,
characteristics
exhibit
pattern
initial
increase
followed
by
decrease
as
content
rises.
NS
exhibited
superior
performance
in
augmenting
compressive
strength
early
crack
ECC;
however,
CNTs
more
effective
enhancing
peak
strain
difference
between
enhancement
not
significant.
consume
CH
crystals
to
generate
C-S-H
gels
make
matrix
material
dense,
improve
transition
zone
at
fibre-gel
interface
While
bridge
inhibit
extension
micron
scale,
form
fibre
mesh
structure
PE
fibres
for
stress
transfer,
deformation
capacity
macroscopic
scale.
