In
order
to
study
the
strength
characteristics
of
red
clay
stabilized
by
a
high
dosage
phosphogypsum,
mix
proportion
design
was
carried
out
at
ratio
phosphogypsum:red
=
1:0.5,
1:1,
1:2,
1:3,
1:4,
and
1:5
using
4%,
6%,
8%
cement
as
curing
agent,
this
through
unconfined
compressive
test,
water
stability
California
bearing
(CBR)
durability
test.
As
phosphogypsum
content
increases,
shows
trend
increasing
then
decreasing,
mixture
is
largest
when
with
increase
in
number
dry
wet
cycles,
decreases,
decay
2–3
cycles.
The
higher
content,
better
performance
mix.
addition,
CBR
value
can
meet
requirements
freeway,
primary
highway,
secondary
highway
bed,
embankment
filler
ratio.
paper,
test
method
proposed
express
terms
mass
loss
rate
coefficient;
increases
coefficient
decreases
cycles;
Applied Sciences,
Год журнала:
2024,
Номер
14(18), С. 8147 - 8147
Опубликована: Сен. 11, 2024
In
the
present
experiment,
two
types
of
water-reducing
agents,
naphthalene
(FDN)
and
polycarboxylic
acid
(PCE),
were
selected,
their
effects
on
mechanical
properties
foamed
phosphogypsum
evaluated.
It
was
shown
that
when
agent
contents
increased,
strength
first
increased
then
gradually
decreased,
dry
density
decreased
increased.
The
FDN
samples
had
better
a
lower
than
PCE
samples.
effect
dose
apparent
viscosity
shear
stress
slurries
in
order
0%
>
0.4%
0.3%
0.5%
0.2%
0.1%.
gypsum
slurry
mixed
with
or
highest.
both
enlarged
pore
size
distribution
range,
proportion
large
pores,
total
content
phosphogypsum;
however,
more
significant.
highest
content.
Among
samples,
A
able
to
reach
91%
B
reached
77%;
lowest
pores
for
separately
17%
7%,
respectively.
agents
mainly
reduced
water
consumption
slurries;
improved
affected
stability
foam
influenced
samples;
caused
difference
doped
matched
foam;
therefore,
it
macro-strength
density.
