PLoS ONE,
Год журнала:
2024,
Номер
19(4), С. e0298761 - e0298761
Опубликована: Апрель 10, 2024
The
intent
of
this
study
is
to
explore
the
physical
properties
and
long-term
performance
concrete
made
with
metakaolin
(MK)
as
a
binder,
using
microsilica
(MS)
nanosilica
(NS)
substitutes
for
portion
ordinary
Portland
cement
(OPC)
content.
dosage
MS
was
varied
from
5%
15%
OPC-MK-MS
blends,
NS
0.5%
1.5%
OPC-MK-NS
blends.
Incorporation
these
pozzolans
accelerated
hardening
process
reduced
flowability,
consistency,
setting
time
paste.
In
addition,
it
produced
denser
matrix,
improving
strength
confirmed
by
scanning
electron
microscopy
X-ray
diffraction
analysis.
use
enhanced
10.37%,
utilization
increased
11.48%
at
28
days.
It
also
penetrability
matrix
maximum
reduction
in
water
absorption
(35.82%)
improved
resistance
sulfate
attack
specimens
containing
1%
presence
10%
MK.
Based
on
results,
MK
can
be
used
obtain
cementitious
structures
durability.
Materials Today Sustainability,
Год журнала:
2024,
Номер
27, С. 100930 - 100930
Опубликована: Июль 26, 2024
The
production
and
use
of
traditional
building
materials
contribute
to
environmental
pollution
natural
resource
depletion.
Besides,
disposal
agricultural,
industrial,
construction
waste
other
solid
wastes
is
a
significant
contemporary
for
both
developing
developed
countries.
Consequently,
this
study
comprehensively
examines
sustainable
(SCMs)
sourced
from
materials.
It
analyzes
190
peer-reviewed
papers,
evaluating
their
properties,
engineering
suitability,
impacts
on
the
environment,
economy,
society.
Findings
reveal
that
most
SCMs
have
good
performance,
yet
improvements
are
needed
in
demonstrating
(33.3%),
economic
(40%),
social
sustainability
(73.3%).
Also,
experimental
stages,
requiring
further
research
human
toxicity,
long-term
savings,
maintenance
costs,
vital
indicators.
This
review
highlights
some
current
challenges
facing
promote
studies,
reduce
non-renewable
energy
consumption
recycling,
facilitate
application
green
buildings.
Buildings,
Год журнала:
2024,
Номер
14(1), С. 136 - 136
Опубликована: Янв. 4, 2024
Over
the
last
decades,
cement
has
been
observed
to
be
most
adaptive
material
for
global
development
in
construction
industry.
The
use
of
ordinary
concrete
primarily
requires
addition
cement.
According
record,
there
an
increase
direct
carbon
footprint
during
production.
International
Energy
Agency,
IEA,
is
working
toward
net
zero
emissions
by
2050.
To
achieve
this
target,
should
a
decline
clinker-to-cement
ratio.
Also,
deployment
innovative
technologies
required
production
alternative
binding
materials
can
easy
solution.
There
are
several
options
substitute
as
agent,
which
available
commercially.
Non-crystalline
alkali-aluminosilicate
geopolymers
have
gained
attention
researchers
over
time.
Geopolymer
uses
byproduct
waste
reduce
dioxide
Despite
being
advantageous,
its
utilization
still
limited
it
shows
quasi-brittle
behavior.
Using
different
fibers
started
overcome
weakness.
This
article
emphasizes
and
reviews
various
mechanical
properties
fiber-reinforced
geopolymer
concrete,
focusing
on
implementation
wide
range
applications.
study
concludes
that
commercialized
after
establishment
proper
standards
manufacturing.
Case Studies in Construction Materials,
Год журнала:
2024,
Номер
20, С. e02863 - e02863
Опубликована: Янв. 10, 2024
In
light
of
the
growing
global
issue
construction
waste
management,
disposal,
and
environmental
impact,
this
study
uniquely
focuses
on
investigating
viability
recycled
brick
powder
(RBWP)
as
a
replacement
for
conventional
industrial
wastes
like
ground
granulated
blast
furnace
slag
(GGBS)
fly
ash
(FA)
manufacturing
engineered
geopolymer
composites
(EGC).
The
EGC
mixes
was
prepared
by
utilizing
polyvinyl
alcohol
(PVA)
fiber
with
12
mm
length,
40
micrometers
were
used.
classes
F
FA
GGBS
replaced
RBWP
in
0,
20,
40,
50,
60,
80,
100%.
A
total
14
different
mixtures
prepared.
flowability,
initial
final
setting
times,
density,
compressive
strength,
direct
tensile
stress-strain
diagrams
examined.
microstructural
characterization
carried
out,
involving
use
X-ray
diffraction
(XRD)
scanning
electron
microscopy
(SEM)
techniques.
results
indicated
that
inclusion
FA-based
resulted
decreasing
flowability
terms
extra
usage
superplasticizer
from
0
to
6%
set
about
90%
91%,
respectively.
Admittedly,
there
significant
enhancement
observed
strain
capacity,
improvements
25%,
29%,
172%,
respectively,
when
completely
FA.
However,
time,
strength
decreased
RBWP.
remarkable
improvement
ultimate
strain,
which
increased
factor
11
compared
fully
GGBS-EGC.
Moreover,
analysis
revealed
exhibited
effective
geopolymerization
within
mixtures.
These
demonstrate
interesting
prospective
application
an
production
EGC.
Construction and Building Materials,
Год журнала:
2024,
Номер
412, С. 134879 - 134879
Опубликована: Янв. 1, 2024
Textile
fibre-reinforced
concrete
based
reviews
have
explored
various
engineering
properties,
such
as
strengthening
of
concrete,
enhancing
strain
capacity,
crack
control,
durability,
and
energy
absorption.
An
essential
missing
component
is
a
comprehensive
analysis
the
thermal
acoustic
insulation
performance
textile
concrete.
The
paper
provides
large-scale
analytical
database
by
analysing
prior
literature
on
It
further
microstructural
pore-structural
aspects
to
provide
an
overview
underlying
mechanisms
driving
these
properties.
This
review
explores
impact
fibre
inclusion
from
0–20
mass
percentage
(wt%)
0–40
volume
(v%).
key
findings
are
that
jute
mortar
demonstrated
superior
conductivity,
achieving
0.068
W/mK
at
20
wt%
inclusion,
followed
0.08
basalt
fibres
v%
demonstrating
possess
commendable
qualities.
Notably,
30
2–4
mm
miscanthus
in
showed
outstanding
dual
performance,
optimal
conductivity
0.09
90%
absorption
841
Hz.
Finally,
study
suggests
directions
address
identified
gaps
can
be
utilised
design
future
research
focusing
end-user
applications.
