G MS THESIS_final version_Maxim Prokudin.pdf - Digital Repository ...

Stiffness Ratio1538Figure 91: Stiffness ratio comparison between C(I) + C(K) composition piers and7aggregate piersBy utilizing 6 information summarized in Table 39 through Table 41 and Figure 91 aStiffness Ratio876543210Unit CellSingle PierGRP 2305mm Groups of piersconclusion 5 can be made where the difference between the aggregate pier and cement type Iand K stiffness values was negligent for most groups of two, four, five and six piers at4ultimate load. Therefore, independently of the material being used, the groups of two, four,five and3six piers were able to bear the same amount of stress imposed on the piers.Contrarily, 2 a very significant difference in the stiffness behavior of single aggregate pier andcement type I and K composition pier was observed.10Another observation that can be made is the greater stiffness ratio difference between the twotypes of pier groups for shorter piers. Therefore, speculation can be made that as theUnit CellSingle PierGRP 22mm5mm10mmGRP 4GRP 5GRP 6GRP 4GRP 5GRP 6610mm Groups of piersUnit CellSingle PierGRP 2dimensions of the piers were to increase the difference in stiffness of aggregate pier andStiffness Ratiocement type I and K composition piers in general was reduced.10Unit CellSingle Pier876543210GRP 2GRP 4GRP 5GRP 6305mm Groups of piersGRP 4GRP 5GRP 6610mm Groups of piers