DHARM

444 GEOTECHNICAL ENGINEERING

Since γd =

G

e

G

wG

s

w

s

. ww
()
. ..
.

,

γγ

(^11)
265 981
1
+^265

F +
HG
I
KJ
= ×

• F ×
  HG
  I
  KJ
  for Zero air-voids condition, γd =
  265 981
  1 265
  100
  ..
  .
  × ,
  F + ×
  HG
  I
  KJ
  w
  w being in %,
  and for Ten per cent air-voids condition, γd =
  265 981
  1 265
  90
  ..
  .
  × ,
  F + ×
  HG
  I
  KJ
  w
  w being in %.
  From these equations, the following values are computed:
  Dry density γd (kN/m^3 )
  Water content (% w) Zero air-voids condition Ten per cen air content
  condition (90% saturation)
  8 21.45 21.04
  10 20.55 20.10
  12 19.73 19.20
  13 19.34 18.80
  14 18.96 18.40
  16 18.26 17.66
  The moisture-dry density curve and the zero air-voids and ten per cent air-voids lines
  are shown in Fig. 12.12.
  21
  20
  19
  18
  Dry density,
  kN/m
  gd
  3
  10 12 14 16
  10% Air content line
  (90% saturation line)
  Zero air-voids line
  (saturation line)
  Compaction
  curve
  Water content, w%
  Fig. 12.12 Compaction curve and saturation lines (Ex. 12.6)