Shotcrete - Gas Vapour Intrusion Protection

Client: Construction Control
Design: Bored piles, Ground anchors, shotcrete with vapour Intrusion membrane
Area: 1,000m2
Completion: 23 January 2012

RIX recently took part in a project to rehabilitate a site that previously contained a service station. This site presented some interesting challenges as the soil was severely contaminated with Hydrocarbons. RIX partnered with the client in designing a solution that employed shotcrete and a gas vapour membrane to protect end users of the structure from any intrusion of toxic gases contained in the contaminated soil.

Seen here in this picture is the smooth (trowel finish) blinding layer of shotcrete. The gas vapour membrane will be applied to this smooth shotcrete surface and then sandwiched between the final layer of shotcrete which will form the walls of the underground carpark.

This is the 2nd photo of a 3 part series in which RIX completes a project to rehabilitate a site that previously contained a service station. The soil is severely contaminated with Hydrocarbons. RIX partnered with our client in designing a solution that employed shotcrete and a gas vapour membrane to protect end users from toxic gases contained in the contaminated soil.

The first application of shotcrete seen in part 1 of this series has now had the membrane painted on and the steel added in preparation for the final layer of shotcrete to complete the protective shotcrete sandwich.

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