My first Magazine dsi-info-23-en | Page 77

Construction—EMEA—France—Commercial Buildings Chemical Solutions and Accessories for a new Pedestrian Bridge The town of Boulogne-Billancourt that borders on the 16 th district southwest of Paris is located close to the Seine River. Until recently, there was no direct connection between Seguin Island and the town of Sèvres on the left side of the river. Consequently, a new, 97m long and 5.7m wide pedestrian bridge was built over the Seine River. The steel structure weighs 360t and was completely pre-assembled in Lauterbourg. Afterwards, it was transported to the installation site on a barge. river bank, Technique Béton supplied several high quality products in order to ensure a long service life of the bridge bearings. Technique Béton supplied SUFA 40/50 and DOG 36 Laroche ® Concrete Spacers for the correct positioning of the reinforcing mesh. On the left river bank, the bridge abutment is being erected between a railroad track and the Seine River. Due to the limited available space, the crane that was needed for construction work was mounted onto a barge and anchored at the river bank. The vegetable mould release agent Biodem ®  SI3 was used for the formwork. This product has been developed in response to the CLP Regulation (Classification, Labelling and Packaging). The two reinforced concrete bridge bearings at the river bank rest on approximately 23m long bored piles. For the abutment on the left In addition, the special wax Cirtec ® was applied with high precision on the architectural formwork. Owner SAEM Val de Seine Aménagement, France General Contractor Eiffage Travaux Maritimes et Fluviaux SASU and Eiffage Construction Métallique, both France Architect Ateliers Jean Nouvel SAS, France DSI Unit Technique Béton, France Technique Béton Scope Production, supply Technique Béton Products Mould release agent Biodem ® SI3 and wax Cirtec ® , Laroche ® concrete Spacers SUFA and DOG 77