SLJ (Short Lapped Joint) Slab Method

SLJ Slab Method has been developed to be utilized for replacement of existing steel bridge reinforced concrete decks. The precast prestressed concrete SLJ slab decks are featured with their joints made of band-end steel rebars. By this, SLJ slabs are so effectively thinner that they may be handled and installed more easily. The band-end steel rebar has literally steel bands press-fitted to the ends of the rebar. The combination effect is generated by the bonding strength of the rebars and the bearing strength of the bands. SLJ slabs allow their lapped joints to be as shorter as by half in comparison with the conventional methods. SLJ slabs do not need to lap rebars between the slabs.

• SLJ slabs allow partial replacement of decks in the longitudinal direction of the bridge for its RC joint method.
• SLJ slabs allow to make it easier to erect precast, prestressed concrete decks and assemble rebars in the transversal direction of the bridge.
• Because of the rebars with epoxy coated band-ends of the SLJ slabs, SLJ slabs can be utilized in the regions where salt water and breeze damages occur and the snow and ice melt is utilized.
• Precast, prestressed concrete decks of the SLJ slabs are more load-resistant and of longer life than the conventional reinforced concrete ones.
• SLJ slabs are precast products and the replacement work can be done more quickly with less influence on the traffic.