Materials,
Journal Year:
2024,
Volume and Issue:
17(24), P. 6266 - 6266
Published: Dec. 21, 2024
The
effectiveness
of
the
stabilisation/solidification
process
depends
upon
a
number
factors,
most
significant
which
are
type
binder,
contaminants,
and
soil
undergoing
treatment.
In
accordance
with
principles
sustainable
construction,
alternatives
to
cement
sought
after,
objective
achieving
lowest
environmental
impact
while
maintaining
high
level
strength
effective
binding
contaminant.
study
zinc-contaminated
loess,
incinerated
sewage
sludge
fly
ash
reactive
magnesia
was
selected
as
UCS
mixtures
microstructure
verified
after
28
days
values
obtained
were
related
reference
sample
exhibited
by
S/S
products
using
Portland
cement.
findings
materials
in
process.
Following
28-day
treatment
30
45%
IFA
MgO
2:1
ratio,
samples
classified
hard
subgrade,
suitable
for
civil
engineering
purposes,
due
achieved,
ranging
from
0.52
0.9
MPa.
Furthermore,
correlation
between
water
content
identified,
mineralogical
composition
determined
use
XRD
technique.
Case Studies in Construction Materials,
Journal Year:
2024,
Volume and Issue:
21, P. e03397 - e03397
Published: June 13, 2024
During
the
highway
construction
in
soft
loess
region
of
Northwestern
China,
there
are
always
tens
thousands
cement
mixing
piles
were
used.
Which
generates
a
large
amount
carbon
emissions,
thereby
affecting
environment.
The
Simplified
Energy
and
Emissions
Assessment
Model
(SEEAM)
is
used
to
quantify
emissions
considering
monitoring
data
IoT
(Internet-of-Things)
system.
To
reduce
error
samples,
Monte
Carlo
simulation
was
based
on
small
samples.
results
showed
that
had
47,530.78
t
missions
contributing
95.64%
total
emissions.
concurrently
ensure
strength
this
study
investigates
unconfined
compressive
variations
white
mud-cement
composite
material
solidified
loess.
It
indicated
10%
20%
mud
provided
an
alkaline
environment
nucleation
sites
for
hydration
reactions,
combining
filling
voids.
According
observation
TG
SEM,
addition
increased
quantity
early
product
CSH
cement.
maintained
high
level
by
comparing
In
addition,
when
content
50%,
reduced
578%
pile
engineering.
This
can
provide
guidance
selection
engineering
design
schemes,
as
low-carbon
emission
schemes
conducive
green
sustainable
development
Journal of Sustainable Cement-Based Materials,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 15
Published: Feb. 4, 2025
To
evaluate
the
durability
of
coal
gangue
(CG)–calcium
carbide
residue
(CCR)
geopolymer
in
aggressive
environments,
full
immersion
tests
were
performed
H2SO4,
Na2SO4,
and
MgSO4
solutions.
Changes
compressive
strength,
mass
loss,
performance
degradation
examined.
Degradation
mechanisms
studied
using
XRD,
FTIR,
TGA,
MIP,
SEM
to
analyze
erosion
products,
microstructure,
pore
evolution.
An
optimal
liquid-to-solid
ratio
0.45
was
identified
for
CG–CCR
geopolymers.
The
material
exhibited
excellent
resistance
Na2SO4
due
ettringite
C-A-S-H
gel
formation,
enhancing
structure
bonding
strength.
However,
H2SO4
poor,
driven
by
aluminum
calcium
leaching
transformation
into
non-cementitious
M-A-S-H
gels.
A
dense
protective
layer
corrosion-resistant
provided
superior
compared
OPC,
with
CCR
addition
further
improving
structural
integrity
generation.
These
findings
highlight
potential
industrial
waste-based
geopolymers
durable,
sustainable
construction.
Frontiers in Materials,
Journal Year:
2025,
Volume and Issue:
12
Published: May 2, 2025
To
address
the
challenges
of
limited
space,
quality
control
issues,
and
ensuring
stable
self-compaction
backfill
materials
in
trench
backfilling
projects,
a
loess-based
cement
slurry
was
developed
as
flowable
material
by
using
loess
primary
base
incorporating
an
appropriate
amount
admixture
for
solidification
improvement.
The
permeability,
collapsibility,
disintegration
were
analyzed
varying
content
curing
age.
slump
test
first
conducted
to
determine
optimal
water
contents,
aiming
180
mm.
Subsequently,
compressive
strength
tested
orthogonal
experimental
design.
analysis
revealed
mix
ratio
slurry:
8%
naphthalene
sulfonate
formaldehyde
condensate,
3%
sodium
sulfate,
0.5%
thiosulfate,
0.08%
ethylene
glycol.
Experimental
results
indicated
that
with
4%
content,
exhibited
maximum
permeability
coefficient
0.977
×
10
−5
collapsibility
0.865
−2
,
confirming
both
meet
required
standards.
When
exceeds
6%,
paste
shows
minimal
collapse.
This
study
offers
efficient
reliable
technical
solution
operations
regions.
Materials,
Journal Year:
2024,
Volume and Issue:
17(5), P. 1184 - 1184
Published: March 4, 2024
Aeolian
sand
and
loess
are
both
natural
materials
with
poor
engineering-related
properties,
no
research
has
been
devoted
to
exploring
aeolian
sand-loess
composite
materials.
In
this
study,
we
used
as
the
main
raw
prepare
unfired
bricks
by
using
pressing
method,
along
cement,
fly
ash,
polypropylene
fiber.
The
effects
of
different
preparation
conditions
on
physical
properties
were
investigated
based
compressive
strength,
water
absorption,
softening
tests
a
freeze-thaw
cycle
test
combined
X-ray
diffraction
scanning
electron
microscope
analysis
determine
optimal
mixing
ratio
for
bricks,
finally,
fibers
durability
investigated.
results
reveal
that
masses
-cement
-fly
ash-polypropylene
fiber-alkali
activator-water
was
56.10:28.05:9.17:2.40:0.4:0.003:4.24
under
forming
pressure
20
MPa.
prepared
had
strength
14.5
MPa
at
14
d,
rate
absorption
8.8%,
coefficient
0.92,
rates
losses
frozen
mass
15.93%
1.06%,
respectively,
where
these
satisfied
requirements
environmentally
protective
grades
MU10-MU15.
During
curing
process,
silicate
sodium
gels
tightly
connected
particles
skeleton,
spatial
network
formed
addition
inhibited
deformation
soil
improved
bricks.
