International Journal of Science Technology Engineering and Mathematics,
Год журнала:
2024,
Номер
4(4), С. 66 - 82
Опубликована: Дек. 1, 2024
The
construction
industry
is
constantly
seeking
sustainable
alternatives
to
traditional
materials
due
growing
environmental
concerns
and
resource
depletion.
This
study
explores
the
potential
of
using
Jhama
Brick
Dust
(JBD)
as
a
substitute
for
fine
aggregate
in
concrete.
bricks,
which
are
over-burnt
often
considered
waste,
were
processed
into
dust
incorporated
concrete
mixes
at
varying
percentages
(0%,
10%,
20%,
30%,
40%)
partially
replace
natural
sand.
tested
their
workability,
compressive
strength,
tensile
durability.
Results
showed
that
containing
20%
JBD
replacement
exhibited
strength
increase
8%
compared
control
mix.
also
improved
by
5%
same
level.
However,
higher
replacements
30%
40%
decline
both
workability.
Durability
tests
revealed
with
had
better
resistance
water
penetration,
making
suitable
applications
requiring
enhanced
research
indicates
can
serve
sustainable,
cost-effective
material
production,
offering
cost
savings
broader
applicability
within
its
performance
availability.
Incorporating
partial
contributes
practices
while
maintaining
satisfactory
mechanical
properties.
Developments in the Built Environment,
Год журнала:
2023,
Номер
16, С. 100284 - 100284
Опубликована: Ноя. 30, 2023
Researchers
seek
sustainable
materials
for
eco-friendly
cement
and
concrete
to
reduce
CO2
emissions.
This
paper
offers
an
extensive
overview
of
the
research
conducted
on
technology
with
minimal
zero-carbon
review
reviews
technologies
lowering
construction
industry's
carbon
footprint,
focusing
alternative
binders
supplementary
cementitious
(SCMs).
Additionally,
explores
transformative
potential
capture
utilization
sustainability.
It
also
explored
life
cycle
assessments,
economic
aspects,
financial
implications
this
technology.
Overall,
summarizes
low-carbon
in
context
development
climate
change
mitigation.
has
been
found
that
substituting
SCMs
reduces
emissions
without
compromising
strength
durability.
Materials
such
as
slag,
metakaolin,
calcined
clay,
limestone
can
replace
clinker,
eliminating
production.
study
highlights
challenges,
including
market
adoption
material
availability,
offering
insights
successful
implementation.
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Ноя. 30, 2023
The
current
decarbonization
strategy
for
the
steel
and
cement
industries
is
inherently
dependent
on
build-out
of
infrastructure,
including
CO2
transport
storage,
renewable
electricity,
green
hydrogen.
However,
deployment
this
infrastructure
entails
considerable
uncertainty.
Here
we
explore
global
feasible
supply
within
Paris-compliant
carbon
budgets,
explicitly
considering
uncertainties
in
infrastructure.
Our
scenario
analysis
reveals
that
despite
substantial
growth
recycling-
hydrogen-based
production,
will
only
meet
58-65%
(interquartile
range)
expected
baseline
demand
2050.
Cement
even
more
uncertain
due
to
limited
mitigation
options,
meeting
22-56%
These
findings
pose
a
two-fold
challenge
decarbonizing
industries:
one
hand,
governments
need
expand
essential
rapidly;
other
prepare
risk
failures,
rather
than
solely
waiting
large-scale
emerge.
scenarios
provide
compelling
evidence
urgency
demand-side
actions
establish
benchmarks
required
level
resource
efficiency.
Sustainable Futures,
Год журнала:
2024,
Номер
8, С. 100244 - 100244
Опубликована: Июль 1, 2024
Circular
Economy
(CE)
is
a
necessary
intervention
for
enabling
resource
efficiency,
energy
conservation,
waste
minimization,
and
sustainability
within
the
construction
industry
(CI).
Among
its
many
facets,
circular
procurement
(CP)
nascent
concept
that
enables
CE
in
CI.
Despite
extensive
literature
review
studies
conducted
on
intricacies,
critical
documenting
barriers
to
adoption
of
CP
CI
remain
scarce.
This
study
systematically
reviews
existing
retrieved
from
Scopus
database.
A
systematic
was
46
shortlisted
articles
published
between
2010-2023
using
Preferred
Reporting
Items
Systematic
Reviews
Meta-Analyses
(PRISMA)
protocol,
key
were
identified.
The
results
reveal
both
hard
(HB),
such
as
lack
design
production,
reverse
logistics,
standardization,
reliable
information
management,
profitable
business
models,
soft
(SB),
stakeholder
engagement,
trust
routes,
resistance
change,
perceived
performance
issues
collaboration
impediments
Further,
measures
strategies
mitigate
identified
also
are
presented
current
study.
Finally,
conceptual
framework
facilitate
way
forward
enable
transition
traditional
practices.
Case Studies in Construction Materials,
Год журнала:
2024,
Номер
20, С. e02867 - e02867
Опубликована: Янв. 10, 2024
Excavated
rock
from
underground
tunneling
activities
constitutes
a
significant
portion
of
the
overall
construction
and
demolition
(C&D)
waste,
yet
its
efficient
reuse
is
challenging.
Here
we
propose
an
integrated
approach
combining
utilization
excavated
production
eco-friendly
ultra-high
performance
concrete
(UHPC).
As
first
steps
to
assess
feasibility
approach,
workability,
mechanical
properties,
fracture
toughness
test,
phase
stability
shrinkage
UHPC
were
comprehensively
studied.
The
results
show
that
increasing
content
in
leads
reduction
flowability
but
improves
flexural
with
enhancement
stability.
However,
this
effect
diminishes
larger
sizes.
compressive
strength
mixture
400
kg/m³
dosage
5-10
mm
size
range
achieve
104.1
MPa,
which
better
than
reference
UHPC.
Meanwhile,
elevated
obviously
reduces
shrinkage,
notably
within
mm.
In
addition,
assessment
was
performed
evaluate
both
environmental
economic
perspectives.
indicate
incorporating
as
aggregates
into
can
result
cost
savings
up
9.5%,
11%
embodied
energy,
15.5%
decrease
carbon.
Additionally,
integration
yield
superior
properties
compared
This
also
dependence
on
natural
aggregates,
promoting
sustainability.
Advances in Civil Engineering,
Год журнала:
2025,
Номер
2025(1)
Опубликована: Янв. 1, 2025
The
sand
crisis
has
received
growing
attention
in
recent
years,
and
a
number
of
substitutes
have
been
examined
by
researchers
order
to
reduce
the
use
river
sand.
Typical
are
industrial
by‐products
that
would
otherwise
require
land
for
waste
disposal.
Steel
slag
(SS)
is
one
such
by‐product
can
be
used
as
replacement
alluvial
concrete.
A
comprehensive
review
effects
SS
on
physical,
mechanical,
durability
properties
concrete
presented
this
study.
primary
objectives
study
(1)
evaluate
impact
varying
proportions
substitute
mechanical
concrete,
(2)
identify
optimal
percentage
achieve
enhanced
performance,
(3)
address
existing
knowledge
gap
regarding
sustainability
using
applications.
systematic
available
data
revealed
promising
application
with
strength
durability.
Considering
all
aspects
applications,
optimum
level
reported
range
from
30%
60%,
meeting
concrete’s
expectations.
findings
also
show
further
research
needed
determine
(SSC)
different
intended
