Mechanics of Advanced Materials and Structures,
Journal Year:
2023,
Volume and Issue:
31(25), P. 6829 - 6837
Published: Aug. 7, 2023
AbstractThis
study
aims
to
serve
as
a
performance
indicator
for
the
workability
and
strength
of
concrete
when
coarse
aggregate,
sand,
cement,
water
are
partially
substituted
with
waste
plastic
bottle
caps.
The
significance
these
alternative
caps
is
reduce
trash
that
difficult
lapse
prevent
can
be
transformed
something
may
employed
in
advancement
technology
future.
principle
"Reduce,
Reuse,
Recycle"
used,
which
not
only
lowers
environmental
pollution
but
also
reduces
costs.
In
building
industry,
most
often
utilized
material.
order
preserve
natural
resources
minimize
number
materials
end
up
landfills,
green
construction
becoming
more
significant
worldwide
issue.
Empty
cans
tops
from
drinking
produce
lot
garbage.
difficulty
biodegrading
need
techniques
recycling
or
reuse
make
this
problem
environment.
Such
problems
being
investigated
determine
whether
it
could
possible
replace
aggregate
0,
6
12%
manufacturing
using
discarded
To
evaluate
compressive
strength,
split
tensile,
flexural
test
characteristics
laboratory
setting;
were
used
replacements
at
different
percentages.
highest
was
determined
28.80
MPa
replacement
cement
ratio
0.55.
Advanced
statistical
methods,
including
RSM-CCD
(Response
Surface
Method-Central
Composite
Design)
machine
learning
models
ANN-LM
(Artificial
Neural
Network-
Levenberg
Marquardt),
applied
predict
performances
based
on
mix
design
variations.
It
found
model
displayed
accurate
prediction
relative
method.Keywords:
Sustainable
concreteplastic
capscompressive
strengthmachine
learningartificial
neural
networkcentral
composite
AcknowledgementsAssistance
testing
PMU
Civil
Engineering
Lab
Technician,
Mr.
Rusty
De
Leon,
greatly
appreciated.Disclosure
statementNo
potential
conflict
interest
reported
by
author(s).
Case Studies in Construction Materials,
Journal Year:
2024,
Volume and Issue:
20, P. e03030 - e03030
Published: March 5, 2024
The
construction
industry
is
making
efforts
to
reduce
the
environmental
impact
of
cement
production
in
concrete
by
incorporating
alternative
and
supplementary
cementitious
materials,
as
well
lowering
carbon
emissions.
One
such
material
that
has
gained
popularity
this
context
rice
husk
ash
(RHA)
due
its
pozzolanic
reactions.
This
study
aims
forecast
compressive
strength
(CS)
RHA-based
(RBC)
examining
effects
several
factors
cement,
RHA
content,
curing
age,
water
usage,
aggregate
amount,
superplasticizer
content.
To
accomplish
this,
collected
analyzed
data
from
literature,
resulting
a
dataset
1404
observations.
Several
machine
learning
(ML)
models,
light
gradient
boosting
(LGB),
extreme
(XGB),
random
forest
(RF),
hybrid
(HML)
approaches
like
XGB-LGB
XGB-RF
were
employed
thoroughly
analyze
these
parameters
assess
their
on
strength.
was
split
into
training
testing
groups,
statistical
analyses
performed
determine
relationships
between
input
CS.
Moreover,
performance
all
models
evaluated
using
various
evaluation
criteria,
including
mean
absolute
percentage
error
(MAPE),
coefficient
efficiency
(CE),
root
square
(RMSE),
determination
(R2).
model
found
have
higher
precision
(R2
=
0.95,
RMSE
5.255
MPa)
compared
other
models.
SHAP
(SHapley
Additive
exPlanations)
analysis
revealed
RHA,
had
positive
effect
Overall,
study's
findings
suggest
with
identified
can
be
used
accurately
predict
CS
RBC.
application
technologies
sector
facilitate
rapid
low-cost
identification
qualities
parameters.
International Journal of Mining Science and Technology,
Journal Year:
2023,
Volume and Issue:
33(8), P. 1019 - 1036
Published: July 18, 2023
Hard
rock
pillar
is
one
of
the
important
structures
in
engineering
design
and
excavation
underground
mines.
Accurate
convenient
prediction
stability
great
significance
for
space
safety.
This
paper
aims
to
develop
hybrid
support
vector
machine
(SVM)
models
improved
by
three
metaheuristic
algorithms
known
as
grey
wolf
optimizer
(GWO),
whale
optimization
algorithm
(WOA)
sparrow
search
(SSA)
predicting
hard
stability.
An
integrated
dataset
containing
306
pillars
was
established
generate
SVM
models.
Five
parameters
including
height,
width,
ratio
width
uniaxial
compressive
strength
stress
were
set
input
parameters.
Two
global
indices,
local
indices
receiver
operating
characteristic
(ROC)
curve
with
area
under
ROC
(AUC)
utilized
evaluate
all
models'
performance.
The
results
confirmed
that
SSA-SVM
model
best
highest
values
indices.
Nevertheless,
performance
unstable
(AUC:
0.899)
not
good
those
stable
0.975)
failed
0.990).
To
verify
effectiveness
proposed
models,
5
field
cases
investigated
a
metal
mine
other
collected
from
several
published
works.
validation
indicated
obtained
considerable
accuracy,
which
means
combination
feasible
approach
predict
Mechanics of Advanced Materials and Structures,
Journal Year:
2023,
Volume and Issue:
31(23), P. 5999 - 6014
Published: June 22, 2023
Concrete
production
contributes
significantly
to
global
greenhouse
gas
emissions,
and
its
manufacture
requires
substantial
natural
resources.
These
concerns
can
be
partly
mitigated
by
recycling
construction
demolition
waste
as
aggregates
produce
Recycled
Aggregate
(RAC).
RAC
has
gained
momentum
due
lower
environmental
impact,
costs,
increased
sustainability.
The
aim
of
this
study
was
advance
the
reasonable
use
recycled
aggregate
in
concrete
achieve
optimal
mixture
ratio
design.
Four
advanced
machine
learning
algorithms,
Support
Vector
Machine
(SVR),
Light
Gradient
Boosting
(LGBM),
Random
Forest
(RF),
Multi-Layer
Perceptron
(MLP),
were
employed,
novel
optimization
biogeography-based
(BBO),
Multi-Verse
Optimizer
(MVO)
Gravitational
Search
Algorithm
(GSA),
integrated
predict
compressive
strength
RAC.
Six
potential
influential
factors
for
considered
models.
employed
four
evaluation
metrics,
Taylor
diagrams
Regression
Error
Characteristic
plots
compare
model
performance.
result
shows
LGBM-based
hybrid
outperformed
other
methods,
demonstrating
high
accuracy
predicting
strength.
Shapley
Additive
Explanation
(SHAP)
results
emphasize
importance
understanding
interactions
between
various
their
effects
on
mechanical
properties
findings
inform
development
more
sustainable
environmentally
friendly
building
materials.
Materials,
Journal Year:
2023,
Volume and Issue:
16(3), P. 1286 - 1286
Published: Feb. 2, 2023
The
application
of
aseismic
materials
in
foundation
engineering
structures
is
an
inevitable
trend
and
research
hotspot
earthquake
resistance,
especially
tunnel
engineering.
In
this
study,
the
pelican
optimization
algorithm
(POA)
improved
using
Latin
hypercube
sampling
(LHS)
method
Chaotic
mapping
(CM)
to
optimize
random
forest
(RF)
model
for
predicting
performance
a
novel
rubber-concrete
material.
Seventy
uniaxial
compression
tests
seventy
impact
were
conducted
quantify
material
performance,
i.e.,
strength
energy
absorption
properties
four
other
artificial
intelligence
models
generated
compare
predictive
with
proposed
hybrid
RF
models.
evaluation
results
showed
that
LHSPOA-RF
has
best
prediction
among
all
property
concrete
both
training
testing
phases
(R2:
0.9800
0.9108,
VAF:
98.0005%
91.0880%,
RMSE:
0.7057
1.9128,
MAE:
0.4461
0.7364;
R2:
0.9857
0.9065,
98.5909%
91.3652%,
0.5781
1.8814,
0.4233
0.9913).
addition,
sensitive
analysis
indicated
rubber
cement
are
most
important
parameters
properties,
respectively.
Accordingly,
POA-RF
not
only
proven
as
effective
predict
materials,
but
also
provides
new
idea
assessing
performances
field