Buildings,
Год журнала:
2024,
Номер
14(7), С. 2142 - 2142
Опубликована: Июль 12, 2024
Arguably
the
most
important
element
in
sustainability
of
concrete
development
is
discovery
an
optimal
sustainable
binder
and
substitution
for
increasingly
depleted
reserves
natural
aggregates.
Considerable
interest
has
been
shown
alkali-activated
materials,
which
possess
good
characteristics
could
be
considered
environmentally
friendly
because
their
use
secondary
materials
production.
The
aim
this
study
was
determination
mechanical
properties
three
different
mixtures
based
on
same
locally
accessible
raw
materials.
reference
mixture
contained
Portland
cement,
second
mix
a
finely
ground
granulated
blast
furnace
slag
instead
third
portion
light
artificial
aggregate.
experiments
focused
testing
mutual
comparison
processability
fresh
(like
compressive
flexural
strength,
as
well
resistance
to
high
temperatures
surface
layer
tear
strength
tests).
Reinforced
beams
without
shear
reinforcement
with
levels
were
also
tested
three-point
bend
test.
results
show
that,
overall,
all
similar,
but
each
had
its
own
disadvantages.
For
example,
slag-based
more
vulnerable
or
debatable
loss
bulk
density
aggregate
at
expense
properties.
One
main
research
that
it
possible
technologically
produce
from
(AAC)
mixture.
Then,
performed
beam
verified
mechanism
damage,
collapse,
load
capacity.
obtained
are
essential
they
present
AAC
not
only
laboratory
conditions
building
elements.
In
reinforcement,
typical
tensile
cracks
caused
by
bending
appeared
under
loading,
where
character
affected
depending
degree
loading.
REVIEWS ON ADVANCED MATERIALS SCIENCE,
Год журнала:
2024,
Номер
63(1)
Опубликована: Янв. 1, 2024
Abstract
Self-compacting
concrete
(SCC)
is
well-known
for
its
capacity
to
flow
under
own
weight,
which
eliminates
the
need
mechanical
vibration
and
provides
benefits
such
as
less
labor
faster
construction
time.
Nevertheless,
increased
cement
content
of
SCC
results
in
an
increase
both
costs
carbon
emissions.
These
challenges
are
resolved
this
research
by
utilizing
waste
marble
glass
powder
substitutes.
The
main
objective
study
create
machine
learning
models
that
can
predict
compressive
strength
(CS)
using
gene
expression
programming
(GEP)
multi-expression
(MEP)
produce
mathematical
equations
capture
correlations
between
variables.
models’
performance
assessed
statistical
metrics,
hyperparameter
optimization
conducted
on
experimental
dataset
consisting
eight
independent
indicate
MEP
model
outperforms
GEP
model,
with
R
2
value
0.94
compared
0.90.
Moreover,
sensitivity
SHapley
Additive
exPlanations
analysis
revealed
most
significant
factor
influencing
CS
curing
time,
followed
slump
quantity.
A
sustainable
approach
design
presented
study,
improves
efficacy
minimizes
testing.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Авг. 12, 2024
Abstract
Improper
waste
management
is
causing
global
environmental
problems.
Waste
glass
may
have
adverse
impacts
on
the
ecosystem.
While
a
substantial
amount
of
soda-lime
bottle
(SGB)
undergoes
recycling
to
create
new
items,
significant
volume
still
ends
up
in
landfills.
Therefore,
aim
this
study
was
explore
potential
use
SGB
foamed
concrete
(FC)
production
as
an
aggregate
replacement.
substituted
for
sand
different
weight
fractions,
ranging
from
5
50%.
The
fresh
state,
mechanical,
thermal,
pore
structure,
and
transport
properties
were
examined.
findings
showed
enhancement
FC’s
mechanical
when
replaced
20%
sand.
compressive,
flexural,
splitting
tensile
strengths
exhibited
rise
17.7,
39.4,
43.8%,
respectively.
also
demonstrated
that
addition
improved
thermal
conductivity,
sorptivity,
water
absorption,
porosity.
scanning
electron
microscopy
analysis
indicated
inclusion
caused
decrease
void
diameter
enhanced
its
uniformity.
A
comparison
made
between
experimental
data
predictions
using
various
models
international
standards,
such
IS
456,
ACI
318,
NZS-3101,
EC-02,
AS
3600,
CEB-FIB,
along
with
several
references
literature.
implied
strong
correlation
strength
properties.
outcomes
research
offer
valuable
insights
into
both
possible
advantages
constraints
FC.
Furthermore,
extensive
laboratory
investigation
serve
guideline
future
aid
advancement
greener
more
environmentally
friendly
FC
alternatives.
Case Studies in Construction Materials,
Год журнала:
2024,
Номер
21, С. e03394 - e03394
Опубликована: Июнь 14, 2024
Developing
a
suitable
activation
method
to
extend
the
application
of
molybdenum
tailings
(MT)
in
construction
materials
is
crucial
for
maximizing
MT
utilization
and
reducing
carbon
emissions
industry.
In
this
study,
was
substituted
different
levels
cement
prepare
cement-MT
composite
paste,
direct
electric
curing
(DEC)
used
attempting
improve
reactivity
MT.
The
results
indicated
that
doping
decreased
compressive
strength
specimens,
increased
pore
content,
reduced
generation
hydration
products.
On
other
hand,
DEC
effectively
improved
early
activity
At
28
d,
cementitious
coefficient
using
by
6.25%-675%
compared
with
standard
(SC)
prepared
specimens.
Meanwhile,
XRD
TG
test
showed
promoted
process
through
ohmic
heating
effect.
However,
it
did
not
change
types
products
or
morphology
content
refined
size
distribution
stage
Moreover,
emission
cost
per
unit
specimens
were
significantly
those
SC.
This
paper
proved
feasible
way
activate
activity,
could
promote
materials.
Buildings,
Год журнала:
2024,
Номер
14(7), С. 2142 - 2142
Опубликована: Июль 12, 2024
Arguably
the
most
important
element
in
sustainability
of
concrete
development
is
discovery
an
optimal
sustainable
binder
and
substitution
for
increasingly
depleted
reserves
natural
aggregates.
Considerable
interest
has
been
shown
alkali-activated
materials,
which
possess
good
characteristics
could
be
considered
environmentally
friendly
because
their
use
secondary
materials
production.
The
aim
this
study
was
determination
mechanical
properties
three
different
mixtures
based
on
same
locally
accessible
raw
materials.
reference
mixture
contained
Portland
cement,
second
mix
a
finely
ground
granulated
blast
furnace
slag
instead
third
portion
light
artificial
aggregate.
experiments
focused
testing
mutual
comparison
processability
fresh
(like
compressive
flexural
strength,
as
well
resistance
to
high
temperatures
surface
layer
tear
strength
tests).
Reinforced
beams
without
shear
reinforcement
with
levels
were
also
tested
three-point
bend
test.
results
show
that,
overall,
all
similar,
but
each
had
its
own
disadvantages.
For
example,
slag-based
more
vulnerable
or
debatable
loss
bulk
density
aggregate
at
expense
properties.
One
main
research
that
it
possible
technologically
produce
from
(AAC)
mixture.
Then,
performed
beam
verified
mechanism
damage,
collapse,
load
capacity.
obtained
are
essential
they
present
AAC
not
only
laboratory
conditions
building
elements.
In
reinforcement,
typical
tensile
cracks
caused
by
bending
appeared
under
loading,
where
character
affected
depending
degree
loading.
