Incorporation of Concrete Polishing Waste as a Partial Substitute for Cement in Mortar
Materials,
Год журнала:
2025,
Номер
18(3), С. 530 - 530
Опубликована: Янв. 24, 2025
This
study
examines
concrete
polishing
waste
(CFPW)
potential
as
a
partial
cement
substitute
in
mortar
formulation.
Concrete
waste,
by-product
of
the
grinding
and
surfaces,
is
mainly
composed
fine
particles
silica
calcium
carbonate.
The
aim
research
was
to
assess
this
industry
incorporation
impact
on
various
properties.
Four
mixes
containing
different
percentages
CFPW
were
tested
for
their
physic-mechanical
properties
environmental
impact.
results
show
that
increasing
percentage
leads
higher
porosity
shrinkage,
well
lower
mechanical
strength
density.
However,
significant
reduction
CO2
emissions
observed
with
(up
29%
30%
CPFW).
Although
use
presents
technical
challenges,
it
offers
an
interesting
opportunity
reduce
mortars’
carbon
footprint.
concludes
moderate
can
offer
balance
between
benefits
performance,
highlighting
need
optimize
formulations
maximize
while
minimizing
compromises
Язык: Английский
Properties of High-Strength Concrete Incorporating Calcined Diatomaceous Earth, Polypropylene, and Glass Fibers
Buildings,
Год журнала:
2025,
Номер
15(2), С. 225 - 225
Опубликована: Янв. 14, 2025
This
study
was
aimed
at
determining
the
hardened
and
fresh
properties
as
well
high-temperature
resistance
of
high-strength
concrete
(HSC)
produced
by
incorporating
diatomaceous
earth,
polypropylene,
glass
fibers.
CDE
(calcined
earth)
employed
a
10%
cement
replacement,
while
polypropylene
fibers
were
added
separately
to
mixtures
0.2,
0.4,
0.6,
0.8,
1.0%
volumetric
contents.
Moreover,
without
using
used
references.
The
fabricated,
followed
determination
flow,
absorption
capacity,
flexural,
compressive,
splitting
tensile
strengths
concrete.
Furthermore,
specimens
fabricated
for
exposed
temperatures
400
°C,
500
600
remaining
compressive
strength
examined.
findings
suggested
that
incorporation
in
HSC
with
enhanced
23.4
32.6%,
70.0
83.5%,
18.9
17.9%,
respectively.
inclusion
reduced
Meanwhile,
lowered
increased
absorption.
It
further
identified
high
temperatures,
resistance.
CDE,
also
flow
Язык: Английский
Study on the Axial Compressive Behavior of Steel Fiber Reinforced Concrete Confined with High-Strength Rectangular Spiral Stirrup
Materials,
Год журнала:
2025,
Номер
18(3), С. 669 - 669
Опубликована: Фев. 3, 2025
Monotonic
axial
compression
tests
were
carried
out
on
16
steel
fiber-reinforced
concrete
(SFRC)
columns
confined
by
rectangular
spiral
stirrups.
The
impacts
of
stirrup
spacing,
strength,
and
cross-sectional
aspect
ratio
the
peak
load,
ductility,
failure
mode
these
analyzed.
test
results
demonstrate
that
fibers
significantly
mitigate
spalling
column’s
protective
layer
through
their
bridging
effect.
Small
spacing
high-strength
stirrups
effectively
confine
core
concrete,
enhancing
bearing
capacity
ductility
columns.
Concrete
strength
exhibits
a
positive
correlation
with
confinement
However,
as
increases,
rate
improvement
in
effect
decreases.
At
compressive
stress,
may
not
reach
its
yield
state.
Based
results,
method
for
calculating
stress
under
is
proposed.
A
“coupling
restraint
coefficient”
proposed,
constitutive
model
HRSS
fiber
reinforced
developed,
considering
coupled
effective
forces
different
directions.
Comparative
analysis
shows
established
this
paper
agrees
well
experimental
demonstrates
good
applicability.
Язык: Английский
Ecological Building Material Obtained Through the Moderate Thermal Consolidation of Ceramic Slurry Collected from Industrial Waste Waters
Materials,
Год журнала:
2025,
Номер
18(8), С. 1715 - 1715
Опубликована: Апрель 9, 2025
The
slurry
collected
from
the
waste
water
resulting
ceramic
tile
processing
contains
significant
amounts
of
quartz,
kaolinite,
and
mullite,
along
with
traces
iron
hydroxides
as
observed
using
XRD
analysis
coupled
mineralogical
optical
microscopy
(MOM).
Such
an
admixture
would
be
ideal
for
development
ecologic
building
materials.
Microstructural
conditioning
enhances
binding
properties
kaolinite.
Therefore,
influence
vibration
compaction
moistened
at
30%
humidity
on
compressive
strength
was
assessed.
unvibrated
sample
is
about
0.8
MPa
failure
promoted
by
microstructural
unevenness.
Several
amplitudes
were
tested
20
to
40
mm.
optimal
mode
obtained
amplitude
25
mm
10
min,
ensuring
a
2.37
smooth
uniform
surface
involved
within
layer
SEM
microscopy.
samples
prepared
under
conditions
thermally
consolidated
700,
800,
900
°C
below
mullitization
temperature
ensure
low
carbon
footprint.
results
reveal
kaolinite
dehydration
in
all
fired
samples,
inducing
its
densification,
which
increases
increasing
heating
temperature.
EDS
elemental
investigations
that
dehydrated
better
embeds
quartz
mullite
particles,
compact
microstructure.
firing
particles
induce
partial
matrix,
their
homogeneity.
compression
dependent:
4.44
700
°C;
5.88
800
°C,
16.87
°C.
fractography
shows
occurs
due
matrix
cracks
particles.
rather
plastic
temperatures
becomes
brittle
Reducing
treatment
time
reduces
footprint
parts.
Samples
exhibit
comparable
quality
bricks,
those
regular
superior
high-quality
bricks.
Язык: Английский