Frontiers in Materials,
Год журнала:
2024,
Номер
11
Опубликована: Окт. 8, 2024
As
demand
for
sustainable
building
materials
rises,
the
use
of
waste
rubber
in
civil
engineering
is
gaining
attention.
This
study
proposes
a
method
to
modify
using
polyvinyl
alcohol
(PVA)
enhance
its
material
properties
and
expand
applications.
A
dataset
was
created
focusing
on
mechanical
strength
cementitious
incorporating
PVA-modified
rubber,
multiple
machine
learning
methods
were
used
develop
regression
prediction
models,
particularly
evaluating
support
vector
(SVR)
model.
Results
show
that
SVR
model
outperforms
others,
achieving
mean
squared
errors
1.21
0.33,
absolute
2.06
0.15.
Analysis
indicates
negative
correlation
between
content
water-to-cohesive
ratio
(w/c)
with
indexes,
while
positive
exists
curing
age
PVA.
Notably,
significantly
affects
strength.
The
notably
enhanced
by
likely
due
PVA's
dispersion
bridging
effects.
presents
novel
approach
sustainably
recycle
highlighting
potential
construction
materials.
Materials,
Год журнала:
2025,
Номер
18(2), С. 422 - 422
Опубликована: Янв. 17, 2025
The
durability
of
reinforced
concrete
is
associated
with
several
factors
that
can
trigger
the
corrosion
reinforcement
bars.
Among
these
factors,
most
significant
are
chloride-ion
attack
and
carbonation.
This
study
evaluated,
through
accelerated
testing,
self-compacting
concretes
(SCCs)
reduced
cement
content
in
binary,
ternary,
quaternary
mixtures
using
high-early-strength
Portland
cement,
fly
ash
(FA),
metakaolin
(MK),
hydrated
lime
(HL).
These
systems
proposed
to
address
slow
compressive
strength
gains
at
28
days
high
minimise
effects
carbonation
levels
mineral
additives.
Laboratory
tests
were
conducted
measure
migration
a
non-steady-state
system,
controlled
chamber,
electrical
resistivity,
void
indices,
strength.
Based
on
results
obtained,
it
was
found
combined
use
MK,
FA,
HL
effective
reducing
consumption
extreme
levels,
such
as
120
150
kg/m3,
while
still
achieving
indices
superior
those
SCCs
500
kg/m3.
Discover Sustainability,
Год журнала:
2024,
Номер
5(1)
Опубликована: Ноя. 20, 2024
Abstract
Increasing
of
plastic
waste
threatening
ecosystems
globally,
this
experimental
work
investigates
recycled
plastics
as
sustainable
aggregate
replacements
in
pervious
concrete.
Pervious
concrete
allows
water
passage
but
has
installation/maintenance
difficulty
due
to
high
weight.
This
research
addresses
the
lack
eco-friendly
lightweight
solutions
by
assessing
physical
and
mechanical
performance
mixes
with
100%
traditional
percentages.
Density
reduced
12%
using
a
mix,
achieving
1358
kg/m
3
compressive
strength
3.92
MPa,
adequate
for
non-structural
applications.
A
7.8%
decrease
absorption
versus
conventional
signifies
retained
porosity
permeability
despite
aggregates.
Though
early
material
limitations
increase
costs
over
199.32%,
show
viability
effective,
substitutes
natural
aggregates
With
further
availability
affordability
improvements,
these
recyclable
can
enable
significantly
greener
construction
practices.
Findings
provide
key
insights
on
balancing
structural
requirements,
eco-friendliness
infiltration
capacity
plastic-based
broader
adoption.
The
examines
durability
characteristics
Light-Weight
Concrete
(LWPC)
composed
entirely
aggregate.
It
also
economic
potential
urban
cost
assessment
reveals
long-term
environmental
advantages,
even
though
initial
expenses
are
higher.
Additionally,
study
considers
an
approach
that
combines
plant
growth
promote
greater
sustainability.
