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Concrete

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Stabilized Base<br />

(CTB) Interface<br />

Typical US- asphalt emulsion, two coats of curing compound<br />

More positive methods – choke<br />

layer (IPRF), ~2 in. AC layer,<br />

mm thick geotextile (Germany), Geo-fabric (e.g., Denver)<br />

Fabric nailed<br />

in-place<br />

Geo-fabric bond-breaker<br />

over CTB at Denver Airport<br />

5 mm geotextile over<br />

CTB (German practice)<br />

17

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