2021 Volume 77 Issue 2 Pages I_415-I_420
In general, unconfined compressive strength is used to evaluate the effect of solution-type chemical injection as a countermeasure for liquefaction. The authors introduced an in situ dynamic cone penetration test to supplement the conventional unconfined compression test, which is susceptible to disturbance during sampling. As a result, we proposed a method of appropriately estimating the unconfined compressive strength after improvement. However, the ground reclaimed with construction surplus soil has large variations in soil texture, and despite the fact that grout material have been injected, the ⊿Nd value which is the difference between the dynamic cone penetration test before and after the improvement, may not be judged improvement effect properly. In this paper, we consider an evaluation method that confirms the improvement effect against liquefaction using multiple indexes comprehensively.
This paper examines evaluation measures that comprehensively using multiple indexes confirm the improvement effect against liquefaction.
