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Geofoam saves time, money during three projects

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Valsayn, Trinidad highway interchange

The project team for an interchange between Trinidad’s Churchill-Roosevelt Highway (CRH) and Uriah Butler Highway (UBH), the island nation’s primary highways, used an EPS geofoam sub-base to solve an engineering challenge and save time in the process.

Highway geometry required placing new lanes adjacent to both sides of an existing fly-over ramp’s support pier. The grade for the lanes required placement of about 10 feet of embankment fill on top of the pier’s pile cap. Engineers determined that traditional fills would have caused unacceptable settlement of the compressive layers located below the fill.

To build the embankment while keeping loads down on the pile cap, Vinci Construction Grands Projets specified EPS geofoam as a lightweight fill, which provided an alternative to building a concrete slab founded on piles to support the load from the road and transfer it away from the pier pile cap. No heavy equipment was needed for the fill placement, as crews were able to install the geofoam blocks by hand.

- See more at: http://www.betterroads.com/geofoam-saves-time-money-during-three-projects/#sthash.dOOlr8tz.dpuf
Valsayn, Trinidad highway interchange
Valsayn, Trinidad highway interchange
Valsayn, Trinidad highway interchange
Valsayn, Trinidad highway interchange

Valsayn, Trinidad highway interchange : To build the embankment while keeping loads down on the pile cap, VINCI Construction Grands Projets specified EPS geofoam as a lightweight fill, which provided an alternative to building a concrete slab founded on piles to support the load from the road and transfer it away from the pier pile cap. No heavy equipment was needed for the fill placement, as crews were able to install the geofoam blocks by hand.

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source: Better Roads