Energies,
Год журнала:
2023,
Номер
16(23), С. 7888 - 7888
Опубликована: Дек. 2, 2023
The
purpose
of
the
article
was
to
conduct
an
in-depth
literature
review
on
possibilities
managing
combustion
by-products
(mainly
fly
ash)
in
context
a
closed-loop
economy.
First,
information
chemical
composition
ash
Poland
collected
and
compared
with
other
European
countries.
authors
concentrated
describing
methods
for
synthesizing
geopolymers
zeolites
using
as
substrate.
By-products
zeolite
synthesis,
which
are
strongly
alkaline
solutions,
can
be
used
substrate
synthesis
geopolymers.
A
concept
has
been
proposed
combine
into
single
process
close
material
loop.
search
comprehensive
technological
solutions
that
take
account
ideas
economy
is
essential
era
resource
depletion,
this
encapsulates
topic
area.
Sustainability,
Год журнала:
2024,
Номер
16(12), С. 5138 - 5138
Опубликована: Июнь 17, 2024
The
high
consumption
and
cost
of
cement
are
the
bottleneck
problems
that
limit
development
cemented
tailings
backfilling
technology.
low-consumption
backfill
is
immersed
in
a
weak
acid/alkaline
groundwater
environment
for
long
time.
Reducing
can
easily
lead
to
such
as
sudden
decrease
strength
leakage
heavy
metals.
Through
monolithic
leaching
test
static
uniaxial
compressive
tests,
metals’
concentration
backfills
different
pH
soaking
solutions
were
measured
at
times.
Results
show
lower
will
result
CTB
higher
rate
metal
leaching.
Long-term
exposure
an
acidic/alkaline
instability
destruction
structure.
A
microscopic
examination
reveals
creation
hydration
products
improve
structure’s
compactness
while
also
lowering
internal
porosity
but
solidify
ions
various
ways.
first-order
reaction/diffusion
model
(FRDM)
better
evaluate
behavior
CTB.
This
study
helps
technology,
thereby
contributing
sustainable
mining
geotechnologies.
Buildings,
Год журнала:
2023,
Номер
13(10), С. 2407 - 2407
Опубликована: Сен. 22, 2023
To
effectively
utilize
the
solid
waste-soda
residue
(SR)
and
fly
ash
(FA),
a
mixture
of
70%
SR,
20%
FA,
10%
clay
was
formed
to
produce
soda
soil
(SRS).
By
adding
cement
and/or
lime,
four
different
SRS
proportions
were
prepared.
The
compaction
properties,
mechanical
dry–wet
stability.
Furthermore,
mechanisms
explored,
improvement
effect
efficiency
lime
on
performance
analyzed.
results
show
that
is
lightweight
easy
compact
shape,
which
conducive
construction.
Compared
cement,
has
greater
impat
properties
SRS.
are
enhanced
after
lime;
unconfined
compressive
strength
(UCS),
California
Bearing
Ratio
(CBR),
resilient
modulus
all
increase
significantly.
UCS,
CBR,
with
degree;
CBR
can
meet
requirements
subgrade,
UCS
base
sub-base.
contribution
rate
per
unit
amount
better
than
As
cycles
increase,
stability
first
increases
then
decreases,
affected
by
hydration
deterioration
together,
critical
cycle
number
for
transition.
excellent
benefits
from
gradation
chemical
action.
particles
complement
each
other
perform
an
interlocking
Therefore,
good
forms
dense
stable
structure.
Also,
reactions
between
materials
very
important.
have
gelling
effect,
FA
participate
in
pozzolanic
reactions,
SR
certain
alkali-activated
effects.
