The use of high-volume hybrid steel fiber instead of compression rebar to improve the structural performance of high-strength SCC beams under bending
Construction and Building Materials,
Год журнала:
2025,
Номер
470, С. 140521 - 140521
Опубликована: Фев. 26, 2025
Язык: Английский
Enhanced strength and fracture features of tailings-based concrete reinforced with fibers and X-shaped rocks
Journal of Materials Research and Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 1, 2025
Язык: Английский
Mechanical, Chloride Resistance, and Microstructural Properties of Basalt Fiber-Reinforced Fly Ash–Silica Fume Composite Concrete
Minerals,
Год журнала:
2025,
Номер
15(4), С. 348 - 348
Опубликована: Март 27, 2025
Basalt
fiber
has
advantages
in
enhancing
the
mechanical
properties
of
concrete,
but
comprehensive
effects
content
and
length,
as
well
relationship
between
impermeability
performance,
remain
unclear
require
systematic
verification.
This
study
aims
to
quantify
basalt
length
on
(compressive
strength,
tensile
flexural
strength)
concrete
permeability
performance
reveal
underlying
mechanisms.
The
macroscopic
results
indicate
following:
(1)
optimum
compressive
strength
fiber-reinforced
is
1.5
kg/m3;
(2)
1.0
(3)
most
significantly
improved
when
reaches
kg/m3
18
mm.
During
tests,
a
nonlinear
functional
exists
two
indicators,
electric
flux
chloride
ion
migration
coefficient.
Microscopic
analysis
showed
that
mineral
admixtures
(fly
ash
silica
fume)
promoted
secondary
hydration
reaction
cementitious
material,
generating
significant
amount
C-(A)-S-H
gels
increase
density
matrix.
After
incorporating
fibers,
they
tightly
envelop
matrix,
reducing
number
internal
voids
achieving
synergistic
stress-bearing
effect
with
confirming
addition
fibers
optimizes
concrete.
provides
quantitative
reference
for
reinforcement
design
engineering
structures
helps
extend
service
life
buildings.
Язык: Английский
Orthogonal Investigation of Factors Influencing the Splitting Tensile Strength of Cemented Aeolian Sand Reinforced with Hybrid Fibers
Case Studies in Construction Materials,
Год журнала:
2025,
Номер
unknown, С. e04596 - e04596
Опубликована: Март 1, 2025
Язык: Английский
Flexural Static and High-Cycle Fatigue Behavior of Steel Fiber-Reinforced Ultra-High-Performance Concrete
Journal of Building Engineering,
Год журнала:
2025,
Номер
unknown, С. 112550 - 112550
Опубликована: Апрель 1, 2025
Язык: Английский
Cutting Feature Extraction Method for Ultra-High Molecular Weight Polyethylene Fiber-Reinforced Concrete Based on Feature Classification and Improved Hilbert–Huang Transform
Buildings,
Год журнала:
2025,
Номер
15(8), С. 1272 - 1272
Опубликована: Апрель 13, 2025
Ultra-high
molecular
weight
polyethylene
(UHMWPE)
fiber-reinforced
concrete
(UHMWPE-FRC)
is
a
hard–soft
multiphase
hybrid
composite
with
exceptional
toughness
and
impact
resistance
compared
to
conventional
concrete.
However,
its
cutting
characteristics
processing
performance
have
not
been
sufficiently
investigated,
potentially
causing
accelerated
saw
blade
wear,
higher
energy
consumption,
poor
quality,
thus
increasing
project
costs
duration.
In
order
intelligently
evaluate
the
of
diamond
blades
when
UHMWPE-FRC,
feature
extraction
method,
based
on
classification
an
improved
Hilbert–Huang
transform
(HHT),
proposed,
which
consider
Improved
Complete
Ensemble
Empirical
Mode
Decomposition
Adaptive
Noise
(ICEEMDAN)
wavelet
threshold
de-noising.
By
conducting
experiments,
force
was
analyzed
by
HHT,
in
terms
noise
reduction
time-frequency.
Five
types
were
preliminarily
screened,
including
depth
cut
(ap),
speed
(Vc),
feed
rate
(Vf),
strength,
type
A
correlation
analysis
method
for
UHMWPE-FRC
cutting,
classification,
proposed.
The
five
features
classified
into
continuous
variable
unordered
categorical
features;
analyses
carried
out
Spearman
coefficient
testing
Kruskal–Wallis
Dunn’s
testing,
respectively.
It
found
that
ap
strength
exhibited
strong
positive
force,
making
them
primary
influencing
factors.
Meanwhile,
influence
aggregates
can
be
identified
low-frequency
range,
while
fibers
high-frequency
range.
classification-based
effectively
distinguishes
Vc
force.
Язык: Английский