Materials,
Journal Year:
2023,
Volume and Issue:
16(11), P. 3996 - 3996
Published: May 26, 2023
This
study
evaluates
a
binary
mixture
of
fly
ash
and
lime
as
stabilizer
for
natural
soils.
A
comparative
analysis
was
performed
on
the
effect
bearing
capacity
silty,
sandy
clayey
soils
after
addition
ordinary
Portland
cement
conventional
stabilizers,
non-conventional
product
Ca(OH)2
called
FLM.
Laboratory
tests
were
carried
out
to
evaluate
additions
stabilized
by
unconfined
compressive
strength
(UCS).
In
addition,
mineralogical
validate
presence
cementitious
phases
due
chemical
reactions
with
FLM
performed.
The
highest
UCS
values
found
in
that
required
water
demand
compaction.
Thus,
silty
soil
added
reached
10
MPa
28
days
curing,
which
agreement
pastes,
where
moistures
higher
than
20%
showed
best
mechanical
characteristics.
Furthermore,
120
m
long
track
built
its
structural
behavior
months.
An
increase
200%
resilient
modulus
FLM-stabilized
identified,
decrease
up
50%
roughness
index
FLM,
(L)
Ordinary
Cement
(OPC)-stabilized
compared
without
resulting
more
functional
surfaces.
Road Materials and Pavement Design,
Journal Year:
2022,
Volume and Issue:
24(7), P. 1869 - 1883
Published: June 29, 2022
This
article
presents
a
comprehensive
study
on
the
efficacy
of
xanthan
gum
(XG)
biopolymer
as
green
construction
material
in
treating
problematic
expansive
subgrade.
The
soil
was
treated
with
various
concentrations
XG
(0,
0.5,
1.0,
1.5,
2.0,
and
5.0%)
considering
long-term
aging
period
4,
7,
14,
28,
60
365
days).
results
showed
reduction
plasticity
at
higher
increase
content.
At
1.5%
content
unconfined
compressive
strength,
elastic
modulus,
resilient
unsoaked
soaked
CBR
values
were
notably
increased
by
5–10
orders
magnitude
regarded
optimum.
Meanwhile,
microstructural
studies
coupled
elemental
analysis
highlight
bridging
particles
stiff
XG-hydrogel
formation
that
contributes
to
strength
development.
Overall,
XG-treatment
exhibits
an
economical
sustainable
solution
for
treatment
