Would a stabilizing material with LL 40 and PI 9 meet the requirement?

Would a stabilizing material with LL 40 and PI 9 meet the requirement?

• A. No
• B. Yes
• C. Only if LL is 41
• D. Only if PI is 10

Answer: (B)

Stabilizing materials are evaluated by upper limits on how plastic the soil can be, using the liquid limit and the plasticity index. The requirement is that both of these properties stay at or below specified maximums to control swelling and deformation. A material with a liquid limit of 40 and a plasticity index of 9 sits right at or below those typical maximums, so it meets the criterion. If either property exceeded its limit, it would not, but in this case both values are within the allowed range.

Stabilizing materials are evaluated by upper limits on how plastic the soil can be, using the liquid limit and the plasticity index. The requirement is that both of these properties stay at or below specified maximums to control swelling and deformation. A material with a liquid limit of 40 and a plasticity index of 9 sits right at or below those typical maximums, so it meets the criterion. If either property exceeded its limit, it would not, but in this case both values are within the allowed range.