Search Results: 'Putzmeister'

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The expanse macabre
29 May, 2017
Rolzur Eternal Green Solutions is constructing an underground mausoleum in Israel to meetthe growing demand for burial space. Alex Conacher reports

Uncanny valley
23 May, 2017
The use of digital technology to improve training is growing in the tunnelling sector withinnovations that can improve safety and save money

WTC 2016
01 April, 2016
Registration is open for the worldwide tunnelling event of the year, with as many as 600 unique technical presentations, short courses and breakout sessions, and more than 200 exhibitors from around the world. Here’s a look at the highlights planned for this year’s conference and be sure to visit Tunnels & Tunnelling at Booth 1215 at this year’s WTC in San Francisco.

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

Keeping the timetable on track
06 December, 2010
Following tunnel breakthrough civils work continues on inner linings and walkways, which complete only in 2014. But focus is already switching to the fit-out of the tunnels

Replacing Guanjiao
11 November, 2010
The new Guanjiao rail tunnel is a major twin tube project being built at high altitude in West China. It replaces the shorter single bore higher up the mountain and so increases capacity on the link to Tibet. Report by Patrick Reynolds

Meeting shotcrete specifications
23 March, 2010
In the long history of shotcrete, or sprayed concrete, linings underground, never has so much been expected of them. In the transition in scope from hard rock primary support to soft ground permanent support, shotcrete is now expected to create structures under even more demanding conditions, but still at comparatively low cost. Here technical editor Maurice Jones reviews the state of some developments designed to meet such demands

Concrete casting
23 April, 2009
In the field of cast in-situ lining, recent trends in customer requirements in addition to cost efficiency include better fuel economy, work-ability over longer periods, greater pumping parameters, faster erection and removal of formwork. Maurice Jones reports

Collaborations for complex casting
13 August, 2008
The equipment adopted for the in-situ casting of tunnel linings can have a major impact on overall project cost and time schedules. Amanda Foley, deputy editor, looks at three recent case histories

NAT goes to San Francisco
18 April, 2008
2008 North American Tunneling Conference (NAT)June 7-11, 2008 - Hyatt Regency, San Francisco

Cast in-situ Tunnel Linings
22 October, 2007
Despite advances in sprayed concrete, segmental lining and some other support technologies, many tunnel designers still prefer a cast concrete lining. Technical journalist Maurice Jones checks on advances in this field

Movers and shakers
08 August, 2007

Modernisation on the M25
26 June, 2007
The current operational refurbishment of Europe’s busiest urban road tunnel, the Holmsdale Tunnel on London’s M25 motorway, involves reconfiguration of the ventilation, capacity expansion and complete modernisation of the tunnel fit-out. Report and photographs by technical journalist Adrian Greeman

Monster tunnelling at Glendoe
16 April, 2007
At the March British Tunnelling Society meeting, members from the client, consultant and contractor gave an exhaustive presentation on one of the UK’s largest tunnelling projects

Ingredients for success in shotcrete?
19 February, 2007
Sprayed concrete seems to attract more than its fair share of heated debate. Technical journalist Maurice Jones attempts to sort out what is available, what is useful, and what it is supposed to do

Modern shotcrete rigs assist Chinese project
01 June, 2005

Managing risk at T5
01 April, 2005
The very well attended 20 January 2005 meeting of the British Tunnelling Society heard a presentation by Ian Williams, the T5 Tunnels Delivery Manager for BAA who described some of the key aspects of managing risk for the tunnelling carried out for the Terminal 5 project at Heathrow

Flexible NATM at Nollinger Berg West
01 September, 2004
Johannes Horner of consultant, iC consulenten, and Manfred Sachs of contractor, Östu-Stettin, describe here how a flexible approach to NATM was used to construct the 1.3km long Nollinger Berg West road tunnel through mixed geology

Shotcrete extremes at Kárahnjúkar
01 March, 2004