Later, in the 1980s, an automated process was developed which allowed the sprayed-on application of premixed and site-mixed FRC. Alongside this, the use of fibres in the manufacture of pre-cast ...

The internal, lined diameter is 31.5 ft. (9.6 meters) and was formed using precast concrete lining segments or rings. They were cast on site and each ring was 6.6 ft (2 meters) long, 17.7 in. (450 ...

The Delhi Metro Rail Corporation (DMRC) completed the construction of an underground tunnel between Kishangarh and Vasant ...

The final concrete piece in the Waterview tunnel puzzle is ready to be installed. A purpose-built factory in East Tamaki has cast the last of 24,000 segments being used to line the Waterview ...

The 1.5 metre precast concrete segments will be loaded on to an 1,800-tonne tunnel boring machine which, as it advances forward, will use them to form rings to line the tunnel.

FRISCO, Colo. (AP) - Construction crews are preparing to install the concrete lining on a newly widened tunnel on Interstate 70 near Idaho Springs. The Summit Daily News reported Wednesday (https ...

Faults found in HS2 ’s first ‘green tunnel’ could add millions more to the bill. Construction has been halted as tests are carried out amid fears it may have to be destroyed, says trade mag ...

Concrete cracks, leaking tunnel joints and metal connection frames that came in the wrong size were all problems discovered in the construction of the new Midtown Tunnel, uncovered by an exclusive ...

Later, in the 1980s, an automated process was developed which allowed the sprayed-on application of premixed and site-mixed FRC. Alongside this, the use of fibres in the manufacture of pre-cast ...