REFURBISHMENT OF A MAJOR BRIDGE

“Gazela” is the most important road bridge in Belgrade/ Serbia across the Sava river. It is also part of the European route E75. The bridge is 332 meters long and 27.5 meters wide, with three lanes in each direction and total road width of 21.8 meters. It is constructed as a combination of beam and arch, with shallow-frame beam and diagonal steel-concrete abutments.

Constructed from 1966 to 1970, today the bridge has extreme busy and heavy load because it is the main connection line between city center and New Belgrade, and also carries the transit traffic on E70 and E75 highways through Belgrade. Each day about over 160,000 vehicles cross it, even it was designed to be used by 40,000. Therefore the bridge was reconstructed from 2010 to 2011.

CONCRETE ADMIXTURES AND STRENGTHENING MATERIALS

Supplying concrete admixture products for concrete structures, systems for concrete repair and protection, adhesives for concrete elements and strengthening materials for bridge structures is Sika’s well-known competence. Sika has successful long track record in bridge constructions and the necessary professional expertise.

In this project Sika d.o.o. Beograd not only supplied full-range systems for the all reconstruction works, but also appointed one local Sika expert as project manager for full technical support. There were 30 internal tests and 17 external approval needed before the systems had been applied to the bridge. The clients were impressed by Sika’s sound knowhow and excellent service.

SIKA PRODUCTS USED IN THIS PROJECT

Structural Bonding/Structural Strengthening

  • Sika® CarboDur® Lamelle S 812/S912/S1012
  • SikaWrap®-230 C Rolls 300 mm/600mm
  • Sikadur®-30
  • Sikadur®-330

 

Structural Bonding/Rigid Bonding

 

Concrete Repair and Protection/ Ready to use mortars

 

Concrete Repair and Protection/ Concrete Protection

Water reducers/HRWR

  • Sika®ViscoCrete®-3070

 

Other Admixtures &Additives/Concrete Essentials

  • Separol® N

 

Injection

  • Sika® Injection Packer MPS 13/115, MPS 13/70
  • Sika® Injection Pump EL1
  • Sikadur®-52 Injection

 

Sealing and Bonding

  • Sika® Primer-3 N
  • Fugenprofil 6/10/20/25 mm
  • Sikaflex® PRO-3 WF

 

Grouting/ Cementitious Grouts

 

Other products

  • Thinner C, Sika® Colma Cleaner, Sikadur®-501