13th International Conference on Fracture June16–21, 2013, Beijing, China -7after freeze-thaw cycling test. The results show that the loading capacity of UHPC precast products increased significantly after 600 free-thaw cycles. As a result of freeze-thaw resistance, the appropriate mixes of UHPC applied in the precast products have been obtained; it would provide a reference manufacturing for the UHPC products. Figure 3. Photo UHPC2.5 specimen free falling test setup for 6-meter high Figure 4. Photo UHPC2.5 specimen cracks after 6-meter high free falling test Table 5. UHPC2.5 specimens cracks after free falling test at three different heights Free falling height 2meter 4meter 6meter Surface crack Non-crack 0.35 mm 1.40 mm Table 6. Ultimate loading strength of UHPC precast specimens after loading capacity test Specimen Diameter of steel fiber Ultimate loading strength UHPC2.5 0.20mm 13738kg UHPC2.5 0.25mm 12293kg UHPC3.0 0.20mm 13835kg UHPC3.0 0.25mm 14369kg UHPC3.5 0.20mm 13301kg UHPC3.5 0.25mm 14733kg
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