Ginger CEBTP

Geotechnical and civil engineering diagnostics for quayside equipment as part of a policy to rehabilitate the port infrastructure at the Brest defence infrastructure facility (ESID de Brest). The aim of the survey campaign is to improve our knowledge of the structures and their surroundings, as well as the nature and characteristics of the subsoil in front of the quays and the pier head, by analysing the structural files, synthesising all the available data in order to adapt the investigation programme, pyrotechnical diagnostics, detailed underwater inspections of the quays and geotechnical investigations of the quays and the pier head. Geotechnical investigations were carried out on land and on a self-elevating platform.

As part of its property monitoring programme, LOGEO SEINE has commissioned Ginger CEBTP carry out an audit of the condition of its reinforced concrete balconies. The mission consists of carrying out on-site investigations to identify any structural defects and analyse the causes of pathologies.
The purpose of this mission is to enable LOGEO SEINE to:

• Ensure the soundness and stability of all balconies,
• Propose solutions to ensure the durability of the inspected balconies

As part of its property monitoring programme, INOLYA commissioned Ginger CEBTP to carry out an audit of the condition of its reinforced concrete balconies. The mission consists of carrying out on-site investigations to identify any structural defects and analyse the causes of pathologies. The purpose of this mission is to enable INOLYA to:

• Ensure the soundness and stability of all balconies,
• Propose solutions to ensure the durability of the inspected balconies.

As part of its asset monitoring programme, the Lyon Airport Authority called upon Ginger CEBTP to assess the condition of two runways (4.0km and 2.6km respectively), taxiways and parking areas.

• High performance visual inspection using a multi-function vehicle for comparison with manual SI,
• Degradation survey using manual SI method,
• Core sampling (structure and subgrade),
• HWD deflection measurement,
• Ground-penetrating radar survey,
• Laboratory analyses
• Back calculation of runway capacity (PCN method).

SNCF RESEAU has commissioned Ginger CEBTP's specialist works division to carry out work south of the Brive-la-Gaillarde railway station on line no. 590 000 between Les Aubrais and Montauban, on the PN 293, Sirejol 2, PN 303, Gretzal and Le Boulet trenches, at nightime for a period of three months.

• Horizontal core drilling in masonry work and soil, from 3 to 6 m deep, with endoscopic surveys,
• Boreholes with pressuremeter tests and pressure-sensitive, submersible measurement sensors.

ARCOS contracted Ginger CEBTP to carry out an independent inspection of the structures on the A355 western bypass of Strasbourg (COS - contournement ouest de Strasbourg). This is a new 24 km 2 x 2 lane motorway with 2 interchanges, 2 motorway junctions, 2 viaducts and around 50 standard structures. The inspections include:

• On site: concreting (slump test, air content, specimens), deep foundations (sonic testing), waterproofing (substrate acceptance, adhesion testing and infrared thermography inspections),
• In the laboratory: compressive strength of concrete and spalling,
• In the steel mills and pre-cast concrete facilities: control audits.
   

As part of the CAP2020 project, led by the Grand Port Maritime de Dunkirk, Ginger CEBTP was contracted to build two kilometres of quay and then excavate the extension of the Atlantic basin to the south. The excavation of this basin will allow the reclamation of approximately 350 hectares of land to be used by logistics and industrial companies.
The following investigations were carried out:

• Eighty static penetrometer boreholes to depths of between 15 and 30 m, including fourteen with pore pressure measurements,
• Eighty core samples, SC1 to SC80, 14 to 50 m deep. A number of the boreholes were drilled using a SONIC core drill. All of the boreholes were secured against explosive hazards prior to drilling.