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17 R E L A S T ® D E S I G N M A N U A L Figure 19 Loaddisplacement curve of specimens from test series 2017 [2] 3 2 2 Test series 2017 In this test series all specimens were reinforced with RELAST ® screws The main aim was to understand the performance of the strengthening system under cyclic loading The RELAST ® configuration is shown in Figure 18 From the forcedisplacement curves in Figure 19 the following results can be identified • Specimens S02-P01 and S02-P02 reaffirm that installing the screws to the top edge of the top flexural reinforcement increases load resistance from installation below to installation above • Comparing specimens S02-P03 and S02-P01 reaffirms that the larger diameter RELAST ® 22 offers higher load resistance than RELAST ® 16 4 5% increase from RELAST ® 16 to RELAST ® 22 • Specimens S02-P05 and S02-P06 were loaded with cyclic loads under 270 kN to 450 kN and did not fail deformations and failure loads proved to be similar to specimens under static loading Figure 18 Test series 2017 [2] 48 RELAST ® 22 M20x320 mm 48 RELAST ® 22 M20x320 mm 48 RELAST ® 22 M20x320 mm 48 RELAST ® 16 M16x380* mm 36 RELAST ® 22 M20x635* mm 48 RELAST ® 22 M20x320 mm