The East Side Access Project required a unique solution to redirecting the hard rock TBM at a critical intersection linking the Long Island Railroad Commuter Train Line tunnel to the tunnel leading to Grand Central Station. The Joint Venture of Dragados/Judlau turned to Maxon for a solution to mix and place foamed concrete on-site below ground to temporarily fill the end of a previously bored tunnel so that the TBM could be relaunched in a new heading.

 

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