For repair item 2, 3
5.3 Marking the position which need to replace by new dowel bar
5.4 Start to drill the pile, the holes was drilled onto the top of concrete bored pile. Hole diameter as per manufacturer’s recommendations.
5.5 The depth of holes not less than 10 time of diameter as per epoxy manufacturer’s recommendations
5.6 Drilled hole shall be clean by water and blown dry prior to placing the bonding agent
5.7 Placing the epoxy into drilled holes and pile dowels inserted. All mixing and placing of the epoxy agent shall be accordance with the manufacturer’s recommendations.
5.8 The Epoxy brand Cormix type Condur anchor will be used for bonding agent between new dowel bar and bored pile. The detail of Cormix Condure is show in the appendix B
5.9 In the period of curing time, not allow to disturb the dowel bar minimum 24 hours
5.10 After pass minimum 24 hours, Bundle the new dowel bar with existing dowel bar