Buildings,
Journal Year:
2024,
Volume and Issue:
14(9), P. 2902 - 2902
Published: Sept. 14, 2024
This
study
underscores
the
potential
of
utilizing
natural
volcanic
tuffs
(NVTs)
as
supplementary
cementitious
materials
(SCMs)
in
alignment
with
global
sustainability
efforts
aimed
at
mitigating
cement
industry’s
negative
impacts
on
both
economy
and
environment.
Experimental
investigations
were
conducted
concrete
mixtures
containing
10%,
20%,
30%,
40%,
50%
NVT
partial
replacements
to
assess
their
influence
concrete’s
mechanical
microstructural
properties.
Based
findings,
samples
10%
exhibited
increased
flexural
compressive
strengths
35.6%
5.6%,
respectively,
compared
ordinary
after
28
days.
The
depth
water
penetration
was
significantly
reduced
by
inclusion
NVT,
a
maximum
reduction
56.5%.
Microstructural
analysis
using
scanning
electron
microscopy
(SEM)
revealed
enhanced
densification
microstructures,
attributed
high
pozzolanic
activity
use
cement-based
composites.
Analysis
variance
(ANOVA)
statistically
significant
relationships
between
content
samples.
In
conclusion,
substituting
not
only
enhances
properties
but
also
decreases
energy
demand
for
production
reduces
carbon
dioxide
(CO2)
emissions,
thus
contributing
more
sustainable
construction
practices.
Journal of Composites Science,
Journal Year:
2025,
Volume and Issue:
9(2), P. 79 - 79
Published: Feb. 9, 2025
This
study
investigates
the
influence
of
basalt
fiber
on
rheological,
mechanical,
and
microstructural
properties
sustainable
self-compacting
concrete
(SCC)
incorporating
fly
ash
microsilica
as
supplementary
cementitious
materials
(SCMs).
Various
SCC
mixes
were
prepared,
five
different
volume
fractions
(0.05%,
0.1%,
0.5%,
1%,
1.5%),
along
with
a
control
mix.
The
rheological
fresh
evaluated
using
slump
flow
V-funnel
tests.
Subsequently,
mechanical
properties,
including
compressive
strength,
splitting
tensile
flexural
measured
after
28
days
curing.
Additionally,
analysis
was
conducted
scanning
electron
microscopy
(SEM)
fractured
specimen
surfaces.
results
indicated
that
inclusion
adversely
affected
flowability
mixes,
increased
volume.
However,
hardened
exhibited
significant
improvements
in
addition
fibers.
optimal
performance
observed
SCC70-85/0.10
mix
specimens,
which
demonstrated
69.90%
improvement
strength
23.47%
increase
compared
specimen.
SEM
further
revealed
enhanced
density
matrix
containing
fiber.
A
two-factor
variance
(ANOVA)
repetitions
to
evaluate
effects
varying
concentrations
compressive,
flexural,
strengths
mixes.
ANOVA
for
both
grade
concentration,
demonstrating
each
factor
independently
tensile,
SCC.
These
findings
suggest
incorporation
fibers
holds
promise
extending
building
lifespans
enhancing
quality,
representing
valuable
advancement
structural
engineering
applications.
Environmental Quality Management,
Journal Year:
2024,
Volume and Issue:
34(2)
Published: Oct. 23, 2024
ABSTRACT
Fly
ash
(FyA),
a
byproduct
from
coal
combustion
in
power
plants,
has
become
increasingly
valuable
due
to
its
pozzolanic
properties.
Primarily,
FyA
finds
applications
the
construction
industry,
including
road
and
brick
construction,
forest
building,
cement
industry.
When
added
concrete,
it
enhances
splitting
tensile
strength,
compressive
workability,
while
also
reducing
environmental
impact
of
production.
Beyond
is
utilized
for
air
pollutant
removal
serves
as
an
adsorbent
various
contaminants.
It
plays
role
creating
geopolymers
nanocomposites,
promoting
development
eco‐friendly
materials.
This
review
article
presents
current
data
on
thermal
plants
(ThPPs)
India,
challenges
management,
impact.
discusses
relevant
Indian
policies
highlights
ongoing
research
aimed
at
improving
efficiency
expanding
industrial
sectors,
such
battery
manufacturing,
zeolite
synthesis,
cenosphere
extraction.
These
efforts
underscore
FyA's
potential
supporting
sustainable
practices.
The
findings
this
address
critical
issues
related
FyA.
By
footprint
removing
pollutants,
acting
contaminants,
demonstrates
significant
pollution
mitigation.
contributes
materials
promotes
sustainability
sector.
Effective
management
practices
are
essential
minimize
negative
human
health
environment.
emphasizes
need
greater
awareness
implementation
these
comprehensively.
providing
detailed
understanding
benefits
associated
with
FyA,
aims
pave
way
more
effective
utilization
byproduct.
Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 2, 2025
The
degradation
of
concrete
structures
in
the
marine
environment
is
generally
caused
by
sulfate
attack
and
chloride
ion
penetration.
To
improve
durability
environment,
fly
ash
(FA)
ground
granulated
blast
furnace
slag
(GGBS)
were
partially
used
to
replace
cement
a
ternary
system.
crushed
sand
was
reduce
shortage
river
sand.
In
this
study,
containing
sand,
FA,
GGBS
prepared
laboratory,
which
replaced
with
substituted
FA
GGBS.
amounts
FA/binder
GGBS/binder
fixed
at
20%
35%,
respectively,
while
content
sand/fine
aggregate
set
60%.
mechanical
properties
investigated
via
compression
splitting
tensile
tests.
examined
using
rapid
penetration
test,
accelerated
corrosion
abrasion-wear
resistance
test.
results
showed
that
partial
replacement
improved
both
concrete.
inclusion
significantly
its
permeability,
specifically,
total
charge
passed
mixture
decreased
from
86.2%
136.9%
comparison
without
addition
could
change
length
(i.e.,
resistance)
when
it
contact
solution.
changes
3.5
times
3.2
smaller
than
those
has
two-time
higher
ingress
conventional
inclusion.
abrasion
GGBS,
mixtures
52
59%
These
demonstrate
can
concrete,
be
applied
environments
for
sustainable
development.
