Sustainability,
Год журнала:
2023,
Номер
15(20), С. 14743 - 14743
Опубликована: Окт. 11, 2023
This
study
involves
partially
replacing
coarse
aggregate
with
marble
waste
products,
and
cement
fly
ash,
in
order
to
obtain
the
best
results.
aims
determine
how
use
of
these
products
affects
mechanical
properties
resulting
concrete,
which
could
have
valuable
implications
for
sustainable
construction
practices.
Different
samples
were
prepared
by
adding
slurry
powder,
a
combination
concrete.
The
modulus
elasticity
Poisson’s
ratio
calculated,
it
was
found
that
admixtures
had
lower
moduli
higher
values
than
did
conventional
concrete
mixture.
Based
on
elastic
constants
E
µ
general
modified
mixtures,
two
structures
are
modelled
each
mixture
simulated
using
ETABS
Ultimate
software
evaluate
compare
practical
applicability
mixtures.
Both
envisaged
buildings
considered
identical,
having
shear
walls
placed
symmetrically.
response
structure
analysed
applying
earthquake
load,
wind
respective
combinations
according
IS
codes.
storey
displacement
stiffness
under
lateral
load
determined.
results
showed
comparable
those
indicate
has
several
benefits,
including
improved
workability,
as
well
adequate
strength
durability,
resistance
deformation,
compared
Case Studies in Construction Materials,
Год журнала:
2023,
Номер
19, С. e02331 - e02331
Опубликована: Июль 25, 2023
The
growing
demand
for
infrastructure
has
led
to
an
excessive
use
of
natural
resources.
On
the
other
hand,
marble
industry
generates
large
quantities
wastes
that
could
be
recycled.
In
order
preserve
resources,
various
methods
can
used,
including
recycling
waste
into
materials
replace
cement
or
aggregates.
This
paper
investigates
effect
substituting
proportions
by
weight
sand
(0
%,
15
30
75
%
and
100
%)
fine
particles
(MW)
on
behavior
a
self-compacting
mortar
(SCM)
in
fresh
hardened
states.
addition,
durability
under
sulfate
attack
was
assessed.
results
show
amount
substitution
not
exceeding
proportion
50
weight,
good
workability
flow
time
are
obtained
state.
An
increase
compressive
flexural
strength
is
obvious
at
90
days
curing
waste.
A
decrease
porosity
substitution,
observed.
against
attacks
improved
as
mortars
with
0
presented
strength,
while
those
180
immersion.
specimens
were
examined
SEM
EDX
detect
possible
presence
ettringite.
Polymers,
Год журнала:
2023,
Номер
15(19), С. 3860 - 3860
Опубликована: Сен. 22, 2023
The
reuse
of
construction
and
demolition
waste
as
a
substitute
for
natural
coarse
aggregate
in
the
production
recycled
concrete
has
been
widely
used.
In
order
to
study
capillary
water
absorption
performance
waterborne-polyurethane-modified
(WPUMRC),
effects
different
curing
systems,
polymer-cement
ratios,
waterborne
polyurethane
addition
methods
on
cumulative
rate
WPUMRC
were
analyzed,
through
MIP
tests,
micro
modification
mechanism
was
analyzed.
results
indicate
that
optimal
system
both
DC
(waterborne
is
added
separately
from
water)
HC
mixed
with
some
effective
then
added)
14
d
standard
curing-14
indoor
drying
system.
Waterborne
can
fill
pores
micro-cracks
inside
or
interweave
hydration
products
cement
form
spatial
network
structure,
reducing
porosity,
thereby
improving
WPUMRC.
Based
test
results,
grey
correlation
method
used
establish
relationship
between
pore
structure
under
addition,
prediction
model
established
according
which
be
predict
WPUMRC's
performance.
Materials Today Proceedings,
Год журнала:
2023,
Номер
unknown
Опубликована: Авг. 1, 2023
This
simulation
is
significant
in
providing
value
for
the
fields
of
civil
engineering,
architecture
and
structure
maintenance.
While
studies
reinforcement
concrete
beam
focus
on
bending
moment,
shear
force
deflection
cracks,
this
has
demonstrated
its
importance
ensuring
stability
structures.
study
aims
at
delimiting
comparing
analytical
numerical
results
examined
through
Robot
Structural
Analysis
software.
That
is,
it
applied
to
investigate
rectangular
reinforced
by
uniformly
load
order
effectively,
intuitively,
rapidly
simply
modify
deal
with
any
physical
geometrical
parameter
means
The
use
software
can
ensure
non-linear
analyses
take
into
account
plastic
behaviors
materials
as
well
big
deformation
instability
element.
are
compared
middle
span.
It
found
that
maximum
moment
have
same
values
case
a
live
load,
but
combination
there
small
difference.
As
regards
deflection,
difference
which
linear
range.
observed
width
cracks
accordance
Eurocode
2
standards
approximative
experimentally
comparison
other
studies.
E3S Web of Conferences,
Год журнала:
2024,
Номер
517, С. 12005 - 12005
Опубликована: Янв. 1, 2024
Aggregates
occupy
±70%
of
the
concrete
volume
and
their
quality
must
meet
specifications.
Concrete
surfaces
submerged
in
water
for
a
long
time
cause
failure
due
to
reaction
between
aggregate
cement
form
silica
gel.
The
wear
value
granite
is
less
than
gravel,
so
this
study
used
as
substitute
coarse
aggregate.
This
was
conducted
assess
resistance
SCC
with
0%,
25%,
30%
stone
variations
alkali-silica
attack.
experimental
method
applied
ACI
mix
design
well
25
MPa
plan
fc'.
cylinder
samples
150
mm
x
300
aged
28
days
were
compressive
strength
test,
expansion
test
mortar
block
285
80±2˚C
NaOH
solution
bath
14
days.
optimum
32.17
lowest
percentage
change
length
0.04%
obtained
by
sample
BG.25-SCC,
indicating
that
not
reactive
alkali
because
<0.10%.
concludes
can
improve
reaction.
Advances in chemical and materials engineering book series,
Год журнала:
2024,
Номер
unknown, С. 211 - 226
Опубликована: Дек. 24, 2024
In
this
current
study
investigates
the
possibility
of
construction
demolish
waste
(CDW)
and
marble
slurry
(WMS)
as
a
coarse
aggregate
(20mm)
cement
in
making
concrete.
CDW
added
(0%
to
30%
at
interval
10%),
WMS
used
10%)
make
concrete
blends.
Total
four
blends
was
cast
including
control
mixture,
three
mixtures
for
combined
use
CDW.
Workability,
water
absorption,
mechanical
strength
tests
were
performed
judge
performance
prepared
with
With
CDW,
workability
decreased,
although
within
acceptable
limits
per
Indian
standard
code.
Concrete
blend
10%
(i.e.
M10C10
blend)
displayed
maximum
compressive
split
tensile
(STS).
The
results
suggested
optimum
up
replacement
