Cement and Concrete Research,
Journal Year:
2022,
Volume and Issue:
157, P. 106834 - 106834
Published: May 13, 2022
The
bulk
of
the
cement
industry's
environmental
burden
is
from
calcareous
source.
Calcium
mostly
available
naturally
as
limestone
(CaCO3),
where
almost
half
mass
eventually
released
CO2
during
clinker
manufacture.
Iron
(Fe)
fourth
most
common
element
in
Earth's
crust
surpassed
only
by
oxygen,
silicon,
and
aluminium;
therefore,
potential
raw
materials
for
alternative
cements
can
contain
significant
amounts
iron.
This
review
paper
discusses
detail
abundantly
Fe-rich
natural
resources
industrial
by-products
residues,
establishing
symbiotic
supply
chains
various
sectors.
discussion
then
focusses
on
impact
high
iron
content
ferrite
(thermo)chemistry,
well
importance
speciation
its
involvement
reactions
supplementary
cementitious
material
or
alkali-activated
materials,
technical
quality
that
be
achieved
sustainable
cements.
One Earth,
Journal Year:
2021,
Volume and Issue:
4(10), P. 1398 - 1411
Published: Oct. 1, 2021
Cement
is
used
globally
in
construction
materials
for
nearly
all
civil
infrastructure
systems
supporting
improved
quality
of
life,
and
there
currently
no
substitute
that
can
meet
its
functional
capacity.
The
magnitude
cement
production
leads
to
more
than
7%
annual
anthropogenic
greenhouse
gas
(GHG)
emissions,
resulting
from
both
energy
use
chemical
reactions,
which
imposes
a
notable
barrier
reach
net
zero
emissions
by
2050.
This
exacerbated
the
interconnectivity
industries
responsible
consumption.
Here,
we
articulate
current
emission
reduction
challenges
facing
products,
propose
compilation
solutions
focus
on
mitigating
at
various
stages
along
value
chain.
We
present
frameworks
design
within
circular
economy
policy
decisions.
anticipate
these
strategies
deliver
with
GHG
alleviate
other
environmental
impacts.
Engineering,
Journal Year:
2021,
Volume and Issue:
14, P. 64 - 76
Published: Oct. 27, 2021
China's
energy
system
requires
a
thorough
transformation
to
achieve
carbon
neutrality.
Here,
leveraging
the
highly
acclaimed
Integrated
MARKAL-EFOM
System
model
of
China
(China
TIMES)
that
takes
energy,
environment,
and
economy
into
consideration,
four
carbon-neutral
scenarios
are
proposed
compared
for
different
emission
peak
times
emissions
in
2050.
The
results
show
will
at
10.3–10.4
Gt
between
2025
2030.
In
2050,
renewables
account
60%
total
consumption
(calorific
value
calculation)
90%
electricity
generation,
electrification
rate
be
close
60%.
transition
bring
sustained
air
quality
improvement,
with
an
85%
reduction
local
pollutants
2050
2020
levels,
early
yield
more
near-term
benefits.
Early
attainment
extensive
deployment
over
next
decade
accelerated
phasing
out
coal
after
2025.
However,
it
benefits
such
as
obtaining
better
sooner,
reducing
cumulative
CO2
emissions,
buying
time
other
sectors
transition.
pressure
ambitious
reductions
can
transmitted
near
future,
affecting
renewable
development,
service
demand,
welfare
losses.
Biochar,
Journal Year:
2022,
Volume and Issue:
4(1)
Published: Oct. 11, 2022
Abstract
Biochar
is
a
waste-derived
material
that
can
sequester
carbon
at
large
scale.
The
development
of
low-carbon
and
sustainable
biochar-enhanced
construction
materials
has
attracted
extensive
interest.
Biochar,
having
porous
nature
highly
functionalised
surface,
provide
nucleation
sites
for
chemical
reactions
exhibit
compatibility
with
cement,
asphalt,
polymer
materials.
This
study
critically
reviewed
the
state-of-the-art
materials,
including
biochar-cement
composites,
biochar-asphalt
biochar-plastic
etc.
efficacies
mechanisms
biochar
as
were
articulated
to
improve
their
functional
properties.
critical
review
highlighted
roles
in
cement
hydration,
surface
groups
engineered
promoting
reactions,
value-added
merits
(such
humidity
regulation,
thermal
insulation,
noise
reduction,
air/water
purification,
electromagnetic
shielding,
self-sensing).
major
properties
are
correlated
features
functionalities
Further
advances
our
understanding
biochar’s
various
composites
foster
next-generation
design
carbon–neutral
Graphical
Resources Environment and Sustainability,
Journal Year:
2021,
Volume and Issue:
4, P. 100024 - 100024
Published: March 27, 2021
The
carbon
footprint
of
cement
industries
has
been
a
major
environmental
issue
in
recent
decades.
Carbon
Capture
and
Storage
(CCS),
use
Supplementary
Cementing
Materials
(SCMs)
as
partial
replacement
to
cement,
nanotechnology
are
some
approaches
that
being
tested
practiced
for
reducing
the
dioxide
(CO2)
emissions
from
industries.
Each
these
approaches,
however,
comes
with
their
own
limitations
implementation
real
industrial
scenarios
is
yet
concern.
This
paper
proposes
an
integrated
approach
where
CO2
captured
plant
will
be
utilized
within
producing
nano
calcium
carbonate
(CaCO3)
manufacturing
process.
technology
incorporates
all
above
three
help
produce
sustainable,
durable,
economical
while
into
atmosphere:
thus,
leading
towards
green
infrastructure
global
sustainability.
Additionally,
adoption
this
ensures
proper
dispersion
materials
thereby
improving
performance
concrete.
Further,
economically
attractive
they
have
new
product
(nano
CaCO3)
much
higher
cost
than
potential
additional
economic
revenues.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: July 18, 2022
Decarbonization
strategies
for
the
cement
and
concrete
sector
have
relied
heavily
on
supply-side
technologies,
including
carbon
capture
storage
(CCS),
masking
opportunities
demand-side
intervention.
Here
we
show
that
cross-cutting
involving
both
supply
demand
sides
can
achieve
net-zero
emissions
by
2050
across
entire
Japanese
cycle
without
resorting
to
mass
deployment
of
CCS.
Our
analysis
shows
a
series
mitigation
efforts
side
reduce
CO
Journal of Cleaner Production,
Journal Year:
2022,
Volume and Issue:
362, P. 132486 - 132486
Published: May 30, 2022
Concrete
is
the
world's
most
widely-used
anthropogenic
material,
and
Circular
Economy
strategies
will
be
key
to
addressing
myriad
challenges
that
face
its
use
today
into
future.
Despite
a
rapid
growth
of
research
interest
in
developing
for
concrete,
this
has
mostly
focussed
on
technical
environmental
issues
at
material
product
scale.
Holistic
approaches
considering
wider
social
political
aspects
as
well
system-scale
perspectives
have
been
relatively
neglected.
This
article
uses
narrative
review
investigate
three
outstanding
questions
help
address
gap:
how
concrete's
attributes
influence
interpretation
principles;
full
range
can
implemented
concrete;
what
likely
implementation
when
integrating
different
(such
design
durability,
component
reuse
recycling).
From
product-scale
perspective,
it
argued
greater
specificity
needed
around
growing
diversity
concrete
materials
products
discourse
-
their
properties
are
often
distinct
hence
specific
not
necessarily
universally
applicable.
At
same
time,
solely
product-centric
perspective
insufficient
only
joint
consideration
structural
systemic
yield
satisfactory
solutions.
'Soft'
social,
legal
cannot
viewed
simply
an
added
bonus,
but
essential
reconciling
'hard'
technical,
economic
dominate
discussions.
Whilst
should
role
Economy,
success
require
more
than
just
extensions
linear
economy
thinking.
