Figs. 10 and 11 show the 28-day modulus of dried-pulverized
and slurry clay mixes in relation to the unconfined compressive
strength. As can be seen, although there is some scatter around the
line of best fit, the effect of soil-cement ratio is less evident. This
is probably because the effects of water-cement ratio and soilcement
ratio have already been largely accounted for in qu. As
shown in Table 5, the E/qu ratio from dried-pulverized claycement
mixes was lower than the corresponding value from slurry
clay-cement mixes. The 28-day E/qu ratio of slurry clay mix was
also somewhat lower than reported values in deep cement mixing
studies, which ranged from 150 to 500 (Asano et al. 1996; Futaki
et al. 1996). This indicates that the elastic modulus of the jetgrouted
soil cannot be predicted using E/qu ratios obtained from
tests which were conducted at water contents in the deep cement
mixing range.