Colas

Ecole Polytechnique

Colas S.a.

Michel Chappat

Jean-Pierre Reymonet

Graziella Durand

Christine Deneuvillers

Jean-Eric Poirier

Xavier Bricout

Stéphane Harnois

Bernard Sapoval

Marcel Filoche

Didier Peyrard

Jean-François Gal

The invention relates to application of solvent(s) to a product including at least one binder, wherein the product is a paint or coating formulation and the solvent is a compound of renewable vegetable origin, notably agricultural origin. It also relates to a paint or coating including at least one binder and one solvent, wherein the solvent is of renewable vegetable origin. Formulations are given.

Use of solvents derived from renewable resources, paints and coating including them, method for preparing them

A noise-absorbing device includes a substantially flat base and embossed and/or hollow elements each including at least one recess. This base reveals with the embossed and/or hollow elements, a configuration exhibiting a fractality zone of between 1 cm and 50 cm, of fractal dimension greater than 2.5 enabling the localization of the waves over the sound frequency range, in the vicinity of the elements.

Noise abatement wall

Bitumen emulsion including bituminous phase having one of pure bitumen, fluxed bitumen, and modified bitumen. The bitumen emulsion also includes an aqueous phase including water and an emulsifying agent. The bitumen emulsion further includes a breaking agent encapsulated in capsules allowing control of breaking of the bitumen emulsion, the control involving rupture of the capsules from a mechanical effect by a mechanical action produced on the bitumen emulsion. Processes of producing a bitumen emulsion. Processes of controlling breaking of a bituminous emulsion.

Bitumen emulsion, process of producing a bitumen emulsion and process of

Vehicle including, mounted on a chassis, a device for receiving material to be spread, a device for transferring the material towards a spreading component, a tank for binding product, a distribution bar, and a motorization assembly. The chassis includes at a rear portion, after the component for spreading the material, and mounted on rollers or balls that are rotatable independent of rolling elements mounted on a front portion, at least one of the motorization assembly, the tank and a control and transmission mechanism providing weight to the rear portion to permit the rear portion to act as a compactor.

Road vehicle for the spreading of materials for repair of the highway,

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Maurepas, France

Michel Chappat