Buildings,
Journal Year:
2024,
Volume and Issue:
14(11), P. 3474 - 3474
Published: Oct. 30, 2024
Rubberized
concrete
exhibits
enhanced
toughness
and
sustainability
but
suffers
from
reduced
mechanical
strength,
limiting
its
applications.
This
study
the
compressive
strength
of
rubberized
using
hybrid
steel/glass
fibers.
The
results
showed
a
positive
synergy
between
fibers,
with
improvements
in
elastic
modulus,
Poisson’s
ratio,
peak
strain,
by
16.1%,
19.4%,
32.0%,
63.4%,
101.7%,
respectively,
at
fiber
content
0.8%
(steel
0.6%
glass
0.2%).
A
well-fitting
stress–strain
model
was
adopted
for
future
constitutive
simulations.
advances
understanding
fibers
under
axial
compression
promotes
application
structural
engineering.
Case Studies in Construction Materials,
Journal Year:
2024,
Volume and Issue:
20, P. e03302 - e03302
Published: May 16, 2024
Industrial
waste
management
has
increased
in
recent
years
and,
at
the
same
time,
production
of
more
sustainable
and
high-performance
concrete
become
one
most
important
challenges
related
to
built
environment.
To
contribute
face
previously
mentioned
challenges,
this
paper
presents
an
experimental
study
on
influence
copper
slag
(CS)
as
a
supplementary
cementitious
material
(SCM)
physical
mechanical
performance
both
short-
long-terms.
The
CS
was
incorporated
using
five
increasing
levels
(0%,
10%,
20%,
30%
50%
vol.)
SCM
fresh
state
(slump)
hardened
(compressive
strength,
indirect
tensile
flexural
porosity
capillary
suction)
properties
concretes
were
evaluated.
results
showed
that
highest
slump
achieved
by
mixture
with
CS,
reaching
27%
increment
compared
reference
(0%
CS).
In
state,
average
compressive
splitting
strength
values
monotonically
decreased
content
short
ages
(28
days).
However,
360
days,
10%
SC
presented
strengths
57
MPa
4.9
MPa,
respectively,
exceeding
corresponding
concrete,
respectively.
addition,
obtained
3.2%
3.5%
28
which
might
be
attributed
angular
shape
particles
cement
particles.
terms
properties,
voids
absorption
increased,
yet
days
curing,
only
higher
than
(increments
5.6%
5.4%
for
absorption,
respectively).
conclusion,
advantageous
potential
use
low
percentages
(between
10
20%),
especially
long
term
mixtures.
Inventions,
Journal Year:
2025,
Volume and Issue:
10(2), P. 22 - 22
Published: March 1, 2025
The
production
of
Portland
Cement
Concrete
(PCC)
generates
significant
environmental
impacts
that
increase
climate
change
and
decrease
people’s
quality
life.
Recent
studies
highlight
the
potential
to
reduce
these
burdens
by
partially
replacing
cement
with
Supplementary
Cementitious
Materials
(SCMs)
coarse
aggregates
Recycled
Aggregate
(RCA).
However,
designing
PCCs
simultaneous
contents
SCMs
RCA
is
not
easily
manageable
because
current
design
procedures
fail
adjust
all
variables
involved.
In
order
overcome
limitations,
this
research
introduces
a
novel
mathematical
model
designed
develop
operationally
efficient
PCC
mixes
are
both
environmentally
sustainable
cost-effective.
proposed
model,
denominated
OptiCon,
employs
Life-Cycle
Assessment
Costs
Analysis
methodologies
evaluate
incorporation
three
different
(i.e.,
fly
ash,
silica
fume,
steel
slag)
into
mixes.
OptiCon
also
integrated
within
graphical
user
interface
in
make
its
implementation
straightforward
for
users.
Thus,
operationalized
through
an
algorithm,
offering
replicable
approach
can
be
adapted
various
contexts,
providing
theoretical
framework
practical
tool
state
agencies,
engineers,
suppliers,
other
stakeholders
adopt
more
friendly
practices
concrete
production.
Furthermore,
case
study
from
northern
Colombia
analyzed
thirty
mix
scenarios
varying
supplier
conditions
(foreign,
local,
or
mixed),
calculating
costs
CO2
emissions
fixed
volume
1
m3.
findings
demonstrated
utilizing
achieve
substantial
reductions
costs,
underscoring
model’s
efficiency
impact.
