Within the scope of improving the soil of paper mill constructions, a composite reclamation system in which the bored pile, GCC and Impact RAP elements are used together has been choosen in order to prevent over and different settlement problems and liquefaction potential. Prior to the final design, full scale loading tests on Impact RAP and GCC elemants were carried out to assess the site specific performance. Construction of Impact RAP and GCC elements, which have reached to 340.700 m in total, are carried out simultaneously with success.

At the same time, the researchs are continued by performing seismic-CPTu and surface seismic tests before and after column constructions in order to observe the expected improvement with the construction of Impact RAP and GCC elements.

Impact^® System was preferred by GURIS A.S. for Efe-8 Geothermal Power Plant of soil improvement beneath the foundations in Aydin, as well Efe 1-4,6-7 in order to mitigate liquefaction potential and provide settlement criteria of 25 mm.