Technium Romanian Journal of Applied Sciences and Technology,
Journal Year:
2023,
Volume and Issue:
12
Published: July 19, 2023
We
have
fabricated
the
concrete
reinforced
polypropylene
fiber
with
styrene-butadiene
rubber
latex
bonding
agent
of
in
different
ratio.The
prepared
employed
structural
studies
using
FTIR
and
XRD
spectra.An
spectrum
shows
important
characteristics
peaks
along
silica
peaks.XRD
pattern
indicates
that
crystal
structure
three
polymorphs
such
orthorhombic,
triclinic
monoclinic
phase.SEM
image
above
10
wt
%
causes
small
hairline
cracks
on
its
surface.It
is
found
tensile
strength
increases
increase
weight
percentage
up
to
%.This
may
be
due
high
compactness
reduction
porosity
block.It
also
note
water
reduce
admixture
as
Polycarboxylates
required
ratio's
significantly
effects
capillary
threshold
by
reducing
8-12
results
higher
density
concrete.
European Journal of Environmental and Civil engineering,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 27
Published: Jan. 4, 2025
This
article
presents
the
results
of
an
experimental
study
on
effect
elevated
temperatures,
ranging
from
20
to
500,
700,
and
1000
°C,
physico-mechanical
properties
polypropylene
fiber-reinforced
recycled
aggregate
concrete
(FRRAC).
Two
(PP)
fiber
lengths,
12
18
mm,
with
a
fixed
dosage
0.2%
volume
increasing
(RCA)
content
20,
40,
60,
80,
100%,
were
used.
Fresh-state
show
that
adding
PP
fibers
in
FRRAC
reduces
its
workability,
while
using
RCA
improves
it,
although
decreases
concrete's
density.
After
heating-cooling
cycles,
weight
loss
increases
temperature,
amplified
by
fibers,
which
create
porosity
after
melting.
Capillary
absorption
swelling
increase
limit
shrinkage
at
ambient
temperature.
Compressive
tensile
strength
significantly
decrease
700
elastic
modulus
degrades
temperature
content.
However,
reduce
crack
openings,
especially
mm
prevent
explosive
spalling,
even
°C.
Waste,
Journal Year:
2023,
Volume and Issue:
1(4), P. 935 - 959
Published: Nov. 20, 2023
The
construction
industry
is
among
the
most
prominent
contributors
to
global
resource
consumption,
waste
production,
and
greenhouse
gas
emissions.
A
pivotal
step
toward
mitigating
these
sectoral
impacts
lies
in
adoption
of
a
circular
production
consumption
system.
use
alternative
materials
can
mitigate
landfill
accumulation
associated
detrimental
environmental
effects.
To
highlight
unconventional
materials,
this
study
began
with
bibliometric
assessment
via
bibliography
analyzis
software
called
“Bibliometrix”
(version
4.1.3).
outputs
from
assist
identifying
research
trends,
gaps
literature
benchmark
performance.
search
engine
used
for
sourcing
publications
was
Scopus,
using
main
criteria
as
“Waste
building
construction”.
time-period
analysed
2013
2023.
results
included
obtained
journal
articles,
book
chapters
conference
proceedings.
reviewed
6238
documents
1482
sources.
revealed
an
array
materials;
however,
rubber,
textiles,
ceramics
had
significant
reduction
attention.
Rubber
presents
promising
opportunities
civil
concrete
methods.
preparatory
steps
textile
fibres
composite
are
frequently
disregarded,
resulting
structural
issues
end-product.
Obstacles
persist
ceramic
technology
due
absence
transparency,
primarily
because
entities
closely
safeguard
proprietary
information.
While
sustainability
often
emphasizes
emissions,
practical
trials
commonly
revolve
around
integrating
into
current
systems.
more
comprehensive
approach,
contemplating
complete
lifecycle
could
provide
deeper
insights
fostering
sustainable
practices.
Researchers
findings
when
determining
gaps,
future
directions.
Case Studies in Construction Materials,
Journal Year:
2024,
Volume and Issue:
20, P. e02944 - e02944
Published: Feb. 3, 2024
Recycling
waste
materials
like
crumb
rubber
(CR)
and
glass
powder
(WGP)
instead
of
using
traditional
construction
in
civil
infrastructure
buildings
is
a
big
step
toward
green
concrete,
sustainable
development,
natural
resource
conservation.
A
novel
efficient
solution
partially
replacing
sand
cement
concrete
with
CR
WGP,
respectively,
was
used
to
analyze
the
load-carrying
capacity
structural
response
reinforced
(RC)
short
columns
exposed
temperatures
25
°C,
400
600
°C.
replaced
5%
by
volume
whereas
WGP
weight
at
10%
20%.
Four
mixes
containing
separate
combined
wastes
were
created.
Twelve
cast
tested
under
axial
loading.
Experimental
results
demonstrated
that
reduces
mix
workability,
compressive
strength,
tensile
while
increases
them
for
replacement
levels
up
10%.
increased
column
14.7%
ambient
temperature.
Temperature
decreases
capacity.
Increasing
heating
reduced
residual
The
decreased
1%,
4.6%,
3.7%
25°C,
400°C,
600°C,
20%
compared
control
same
amounts
had
less
effect
on
reduction
than
Analytical
formulae
from
international
standards
CSA
A23.3,
ACI
318-14,
previously
known
equations
predict
rubberized
RC
being
elevated
temperatures,
various
statistical
tests
compare
these
predictions
select
best
one.
Case Studies in Construction Materials,
Journal Year:
2023,
Volume and Issue:
20, P. e02778 - e02778
Published: Dec. 11, 2023
The
dynamic
properties
of
concrete
structures
after
being
exposed
to
high
temperatures
play
a
crucial
role
in
post-disaster
repair
and
accident
prevention
measures.
This
study
examined
three
different
mixture
ratios
Steel
Fiber
Reinforced
Concrete
(SFRC)
with
matrix
strength
C60
steel
fiber
contents
0%,
1%,
2%.
A
Split
Hopkinson
Pressure
Bar
(SHPB)
diameter
75
mm,
along
heating
furnace,
was
employed
comprehensively
investigate
the
compression
behavior
materials.
specimens
were
ranging
from
200°C
600°C.
In
addition
evaluating
extent
mechanical
degradation
SFRC
cooling,
auxiliary
impact
experiments
also
carried
out
at
ambient
temperature.
experimental
data
revealed
that
peak
stress
strain
initially
increased
but
eventually
decreased
as
loading
rates
continued
rise.
degree
strengthening,
toughening,
energy
absorption
capacity
materials
progressively
escalation
rate
cooling
process.
Moreover,
inclusion
fibers
proved
effective
preventing
cracking
damage
concrete,
preserving
integrity
even
higher
temperatures.
Simultaneously,
residual
deformation
showed
considerable
enhancement
exposure
elevated
