Search Results: 'Putzmeister'

Lining with security and efficiency
14 February, 2011
Second only to the ‘excitement’ of watching paint dry in frustration stakes, at least in tunnelling, is waiting for concrete to cure. Maurice Jones examines how formwork and concrete mixtures are increasing the efficiency of cast in situ concrete tunnel lining

Portal to point of use
11 February, 2011
There is no operation in tunnelling where timing is as important as it is in concrete delivery, whether the material is for permanent cast in situ lining, sprayed concrete lining or grouting. Thus the means of delivery must be reliable and available, compact enough to work within tunnel section availability (including mucking out operations), and convenient to use at the point of delivery where space is also likely to be at a premium. Maurice Jones examines the various means of tunnel concrete transport