Discover all the technical news of the Colas group


OPTIGRAVE & Concrete for 5-ha platform at the port of toamasina

Colas Madagascar was mandated to create a 5-hectare platform at the port of Toamasina.


VALORCOL on the Hungarian road network!

COLAS Út Zrt. has been awarded a contract to develop a section of VALORCOL®, cold mix composed mainly of...


Circular economy: Colas Croatia recycles blast furnace slags!

At the end of 2017, Colas Croatia worked on the reconstruction of 32,500 m2 of asphalt pavement on the...


Creteil : Metalflex at the RATP bus depot

4,500 m² of Metalflex were installed at the RATP bus depot


Colgrill R® takes off at 2 airports in Madagascar

Both airports favored the Colgrill R® technique


METALFLEX®, a boon for urban mobility

The Metalflex solution was proposed as part of the work of the BRT lane of Marseille. A success !


Roller Compacted Concrete in Gabon

Roller Compacted Concrete: a new technique developed by Colas in Gabon


Facelift for the Oleron Bridge

In Charente-Maritime, Colas South West has refurbished the Oleron bridge


Colflex Ultra

In spring 2017, Colas Austria together with CST (Cold laid materials) developed a high modified...


Colclair® in Mayotte: a First!

Clear hot-mix Colclair® made its first appearance in Mayotte in the context of work on the second high-...


Colas Croatia produced their first polymer modified emulsions (PmB emulsions)

Colas Croatia has opened in 2015 a plant for the production of cationic bituminous emulsions (for...


EUROMAC: Inter-agency technical collaboration

After its successful launch in the Centre-Ouest region in 2014, the Ultra Thin Emulsion-Based Asphalt...


Experimental Projects in Gironde Ecomac, Euromac and Easycold™

The wish of the Gironde Departmental Council to trial new processes in the framework of its public-...


A concrete road, a first for Colas Gabon

Olam, a major international agricultural commodities trader, entrusted Colas Gabon with the task of...


Rodal® for a loading platform on a mining site in New Caledonia

Colas Nouvelle-Calédonie carried out construction work for the dry residue processing pilot plant in the...


100% Colas products in the port of Martinique: Optibase and Bétoflex

Colas Martinique was awarded the contract for works on the extension to the Pointe des Grives container...


Metalflex: a honeycomb structure for the holiday highway

In the context of a bid tender for the renovation of heavily -trafficked zones in the AVIA gas station...


Bangkok airport runway express renovation

Thai Slurry Seal, construction branch of Tipco Asphalt, has carried out the partial renovation of the...


New airport apron for the French-speaking countries’ summit in Madagascar

For the French-speaking countries’ summit meeting in Madagascar, Colas renewed the apron of Ivato...


Grand Port Maritime of Marseille, OPTIGRAVE®

Colas Midi-Méditerranée, in collaboration with the Grand Port Maritime of Marseille, has laid down 8,200...


Roissy CDG runway 2 – Laying down of 220,000 m² of glass fiber grid

From July 18 to September 23, 2016, Colas Ile-de-France Normandie and Colas Grand Travaux carried out...


COLMAT AF in South France

In the context of the replacement of the wearing course of the A 570 where it passes through Hyères, the...


Warm mix asphalt for Ile d'Yeu

The Sables d’Olonne Colas Centre Ouest profit center secured a maintenance contract including the...


NOVAFOR and MEGAROUL : doubling up at Colas

As part of a bid involving the access road to the Chazan Wood Energy facility in Chamboeuf, Colas Nord-...


Valorcol on Reunion Island

As part of a city street refurbishment project in Reunion Island, GTOI bid with a technical alternative...


Saflex O.A.® on the New coastal highway in La Réunion

As part of the new coastal highway in La Reunion, the MT2 contract of the Possession Interchange called...


A solution for high quality seals during the south african winter: the Polycol X and Emulcol Combination

In KwaZulu-Natal, South Africa, Colas has recently introduced the Polycol X and Emulcol combination...


Designing and building earth dikes

Colas Nord-Picardie built a 700 m long dike as part of an 8 ha flood field project. The dike was...


A variant solution for two sites: Compostyrène®

In the heart of the village of Olette (Pyrenees Orientales - 66) the THUIR branch proposed Compostyrene...


MEGABASE in Marseille, France for the L2 bypass

As part of the L2 bypass project in Marseille, a 150 m long section of Highway A50 had to be raised an...


Colmat: Morocco's first microsurfacing pilot site is a success

At the end of 2015, the Moroccan government launched a bid for a 265,000 m² microsurfacing project....


Betoflex - Calgary Airport

The Calgary Airport is the third busiest airport in Canada after Toronto and Vancouver with over 15...


A facelift for the Les Fagnes Go-Kart track

With a length of 1,400 m and widths ranging from 8 to 16 m, the Les Fagnes go-kart track in Mariembourg...


Branscome builds a 100,000 SFT Rodal ® platform in Virginia

Kinder Morgan is the largest terminal operator in North America. The main warehouse of their Elizabeth...


Production of colored asphalt in Slovenia

For the first time Colas Croatia and its subsidiary - Asphalt Ptuj Ltd. (Slovenia) has manufactured colored asphalt mix at the Črnotiće asphalt plant in Slovenia for a project involving a car parking zone.


Castelith Unbound surfacing for a natural, historical appeal

France is extremely attached to its cultural heritage and history, which is why the Pepin agency in...


Colclair Colmat on the shoulders of Route RD54 in southern France

As part a reinforcement project on Route RD54 in Figanières, performed by the Colas Midi-Méditerranée...


Helicopters and a train for the Grand Port Maritime of Dunkerque

Dunkerque, France’s third largest port, is significantly enhancing its solid bulk storage facilities (...


Strengthening and renovation by Colas of Beauvais – Tillé Airport (France, Oise)

As part of the reinforcement and renovation project in Beauvais – Tillé Airport, the Beauvais agency and...