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35 R E L A S T ® D E S I G N M A N U A L Material specifications No Part Picture 1 Hexagon nut 2 Wedge lock washer 3 Pressure distribution disc 4 ISO connection thread 5 Concrete cutting thread The RELAST ® screws 16 and 22 are manufactured in carbon steel and are available with a special coating which guarantees a corrosion resistance of class C5-Imiddle according to DIN EN ISO 12944-6 This is also the requirement of the German codes for the use of steel elements affected by deicing salt spray on bridges Working and curing times Susbstrate and mortar temperature °C Maximum processing time t work 1 min Minimum curing time t cure 2 – dry conditions min ≥ -5 60 360 ≥ 0 60 180 ≥ 5 60 120 ≥ 10 45 80 ≥ 20 15 45 ≥ 30 5 25 35 4 20 1 Tightening torque shall be applied before t work has elapsed 2 For wet base material the curing time must be doubled 1 3 4 2 5