re-plate method for concrete structures
re-plate «memory®-steel» is used for retrofitting of structures «for statically and in exceptional cases non statically loaded elements». re-plate is anchored on both sides and functions as an external, unbonded tension strip. re-plate is elongated in the factory and supplied pre-punched at the ends ready to use on-site. The mechanical end anchorage is composed of a Hilti direct fastening system. For activation of the prestressing, the plate is heated using a gas burner or infrared heater.
Usage |
Flexural strengthening for positive/negative bending moments
- changes in loads/operation
- changes in the load-bearing statical system (Removal of columns/supports, new openings in slabs)
Improvement of serviceability limit state
- by reduction of deflections
- reduction of crack width
- by decreasing the stress level of internal reinforcement (fatigue loads)
Prestressing of coupling joints
- for seismic strengthening
- for constructive applications
Strengthening against punching shear
Often appropriate |
Combination of re-plate and Sika® CarboDur®:
re-plate
- Against deflection and cracks in the deck slab and the wall element above
- To relieve load on the existing internal reinforcement
- To cover the loads at serviceability state and under fire
Sika® CarboDur® CFRP-laminates
- To cover the remaining failure load requirement
Tested Sika products |
Fire protection:
- SikaCem® Pyrocoat sprayed fire protection mortar
- SikaCem® Pyrocoat Base Sprayed basecoat for the Pyrocoat fire protection mortar
Corrosion protection:
- SikaCor® EG-1 Corrosion protection coating: epoxy-based intermediate coating containing MiO
- Sikaflex® PRO-3 PU joint sealant for bilateral grouting of re-plate
memory®-steel has been tested in systems with Sika fire and corrosion protection products. re-fer gives no guarantee if other mortars and products are used in combination with memory®-steel.
Application video |