Agru
Tel: +43 7258 7900
Fax: +43 7258 3863
Email: sales@agru.at
With the growth of the New Austrian Tunnelling Method has come a steady development of sealing in rock. Since 1987 particularly, thermoplastic liners, consisting of modified polyethyelenes, have experienced a growth in applications from sealing waste disposal facilities, groundwater protection and hydraulic engineering.
The Agruflex PEVLD liner meets the latest engineering standards for sealing underground construction in rock and offers various advantages including low density, high tenacity and elongation at break, and resistance against chemicals.
Tel: +41 56 649 31 11
Fax: +41 56 649 32 04
Email: info@aliva.com
Aliva group Sika, active in 58 countries, is involved in structural and sprayed concrete, flexible waterproofing, injections, repair and protection of concrete and bonding systems. In the sprayed concrete field, support focuses on concrete production and properties, and equipment including rotary machines, piston pumps, dosing equipment and spraying devices.
New equipment and systems include: the AL-263 concrete spraying machine, which offers remote controlled wet or dry steelfibre sprayed concreting for applications in mining, small tunnels and slopes; the SikaSprinter – a self-propelled unit for wet concrete spraying in thin and dense stream; and a complete tunnel water drainage system featuring easy, fast and flexible installation for primary water drainage in tunnels and mines.
Atlas Copco
Tel: +46 19 670 7000
Fax: +46 19 670 7393
Email: ulf.linder@atlascopco.com
Improvements in loading capacity and elongation are claimed for Swellex frictional rock bolts with the introduction of a new steel composition and heat treatment.
The range, called Swellex Manganese line, has been re-engineered by Swedish manufacturer Atlas Copco within the same geometry.
In use, bolts are placed in a hole, with high water pressure inflating the tube causing a small elastic expansion of the borehole diameter.
Water pressure is released and the surrounding rock contracts, providing the required locking effect and full column rock reinforcement, simply and quickly.
Three models of Boltec specialist rock-bolting rigs are available, all of which can be used to install both Swellex and conventional rock bolts. These range from the 232H with the LBU bolting unit, six bolt magazine and COP 1032 rock drill to 435H with the HBU bolting unit, 10 bolt magazine and COP 1432 rock drill. Depending on the model and length of rock bolt, maximum tunnel heights range from 7.1m to 11.3m.
Atlas Copco Craelius is the group company specialising in grouting technology for ground consolidation, water sealing, lining backfilling and settlement compensation. Complete Unigrout systems are available, either truck-mounted and/or containerised, to include a Cemix mixer, Cemag agitator, grout pump, hydraulic power unit, control panel and Logac recording monitor plus delivery manifold and hoses. Projects successfully using Atlas Copco grouting equipment include sewers in Hong Kong, the Lesotho Highlands water project, the North Cape road tunnel in Norway and the Arlandabahn rail tunnel in Sweden.
Bekaert
Tel: +32 56 76 69 86
Fax: +32 56 76 79 47
Email: vandewalle.marc/ssw@bekaert.com
Exhibiting at Underground Construction
Armanet FP from Bekaert is a steel wire mesh reinforcement system for fire protection in tunnels. The 4.55m² panels incorporate spacings to allow easy fixing on the tunnel lining. It can be produced from galvanised or stainless steel wire, 1.5mm thick.
The mesh was used recently on the two tunnelled sections of Westerschelde in the Netherlands to reinforce the 45mm thick sprayed mortar, emerging as the best choice after tests at TNO Delft .
Belloli
Tel: +41 091 820 38 88
Fax: +41 091 820 38 80
E-mail: belloli@belloli.ch
Belloli of Grono, Switzerland manufactures a number of tunnel stabilising products. Its Belbor range includes self-drilling rock bolts and fully self-boring grouting bolts, both of which played important supporting roles, along with the company’s Belcem mortar mixing grouting pumps, in recent underground rock excavation for the Gotschna tunnel, the main part of the bypass road at Klosters, Switzerland.
The self-boring grouting bolts in particular are ideal for difficult ground and loose soils as encountered on the Klosters drive.
The anchor bar is also the drilling bar and the bolts are set by grouting with cement mortar applied through the anchoring canal.
C V Buchan
Tel: +44 1606 47890
Fax: +44 1606 47710
Email: ted.ruffell@amec.com
Exhibiting at Underground Construction
Buchan offers precast concrete solutions for underground projects, employing computer-controlled batching plants and distribution systems to meet the most stringent requirements.
Products include a wide range of tunnel and shaft linings, and steel-banded jacking pipes.
A comprehensive range of smooth-bore tunnel and shaft linings is also available, including six-segment trapezoidal rings for use behind the latest TBMs.
In conjunction with Dunlop Precision Rubber the firm has also developed Bucseal, a hydrophilic rubber gasket system to provide superior expansion in seawater compared to most proprietary water-swelling compounds, it is claimed.
Buclock is a complementary plastic joint connect system compatible with both hydrophilic rubber and EPDM compression gaskets. Pull-out force ranges from 15kN to 60kN.
Buclock provides a positive shear and tensile connection in all tunnelling environments, significantly reducing build-up times through speed of fixing, and eliminating circle bolts and pockets.
Tel: +49 201 172 13 20
Fax: +49 201 172 10 97
Email: info@carbotechfosroc
CarboTech Fosroc offer answers to bolting, sealing, consolidating, cavity filling and repair applications.
In Mumbai, India, CarboPur resin grout with chemical accelerator CarboAdd were used for emergency sealing of tunnels linking new underground water reservoirs which were suddenly inundated by seawater during excavation.
High penetration made it possible to construct a protective curtain or dome against further flooding, pending installation of the liner.
Ceresola
Tel: +41 61 843 05 00
Fax: +41 61 843 05 05
Email: info@ceresola.com
In any tunnel project, specialist supplier Ceresola can deliver turnkey manufacturing plants for segmental concrete lining, on site or precast.
The company can deal with all requirements from the most simple to fully-automatic, high-tech installations and can also provide segment design and layout of the reinforcement.
Segment handling, moulds, reinforcing cage production and facility modification are all services offered by the Swiss company.
Charcon Tunnels – Tarmac Precast Concrete
Tel.: +44 1623 754493
Fax: +44 1623 759 825
Email:charcon@tarmac.demon.co.uk
Charcon Tunnels is one of four business units comprising Tarmac Precast Products, and has accumulated 60 years of skills and experience in the design and manufacture of a wide range of precast concrete components for the tunnelling industry.
Charcon’s standard tunnel and shaft linings include one pass, bolted, trapezoidal, rapid and expanded designs and methods of installation.
Linings can be produced with conventional reinforcement or, if the design shows it to be viable, with steel-fibre reinforcement for extra durability ad resistance to handling damage.
Charcon also supplies ancillary products to complement tunnel and shaft linings including cover and landing slabs, lifting and handling equipment, cutting edges and choker rings as well as Hydrotite hydrophilic joint seals.
Chengdu Yanfeng
Tel: +86 28 6268325
Fax: +86 28 3449031
Email: yfkj@mail.sc.cninfo.net
Developed by Chengdu Yanfeng Technical Development, the Type TK-961 wet shotcrete machine won a state prize for invention in the People’s Republic of China in 1999.
The rotor piston feed mechanism is said to integrate the merits of thin flow conveying and feeding by pumping with a simple structure, convenient operation and reasonable price.
The unit sprays concrete with much less dust generation, low rebound and higher thickness of one-pass spray, raising productivity, efficiency and quality.
Productivity is 5m³/h, maximum particle size is 15mm and the dosing range for liquid additives is 30-150 litre/h.
The concrete mixture has a slump of 60-180mm at a working pressure of 0.2-0.1 MPa.
Tel: +39 023 354761
Fax: +39 023 545693
Email: tunnelling@cifa.com
CIFA produces a range of shotcrete plant, segment moulds and tunnel shutters as well as concrete mixing, transporting and pumping equipment.
The ‘Spritz’ shotcrete truck for robot placing of wet shotcrete is currently being used extensively on the tunnelled section of the Florence – Bologna high-speed rail link.
High precision segment moulds are now also an important CIFA product with large orders recently secured for Athens and Shanghai.
Tunnel shutters follow a well proven system and CIFA engineers are keen to produce designs to suit each customer’s specifications.
CIFA has recently appointed Specialist Plant Associates Ltd as sole agents for the UK and Ireland.
De Neef Conchem
Tel: +32 15 249360
Fax: +32 15 248072
Email: conchem@deneef.net
The De Neef group manufactures and supplies leak-sealing products to stop water ingress below ground or from water retaining structures.
Experienced technical support teams advise on products and their methods of application, whilst approved specialist contractors are trained and experienced in resin injection techniques for leak prevention or crack repair.
Dywidag-Systems International
Tel: +49 89 9267-0
Fax: +49 89 9267-252
Email: dsihv@dywidag-systems.com
Exhibiting at Underground Construction.
As specialist suppliers of geotechnical and post-tensioning products and services, DSI produces ground anchors, rock bolts and MAI hollow bar which is self-drilling for mini-piles and temporary anchors.
Ground anchors, temporary or permanent, comply with BS 8081 Standard and are available as threadbar designs up to 2217kN rating, strand anchors up to 8100kN, and multi-stage anchors for weak ground.
Rock bolts are made in Gewi-Steel threadbar; plain, galvanised or factory pregrouted.
EGTechnology
Tel: +39 0521 61 51 41
Fax: +39 0521 61 51 42
Email: info@egt.it
The EGT line from Italian company EGTechnology includes drill rigs for soil improvement in tunnels of up to 14m in diameter.
There is a choice of electric or diesel power units up to 220hp, with one to three masts. Rotary heads up to 14.5Nm torque are equipped with a passing through chuck. The top hammer gives a total stroke up to 18m. Drilling capacity is up to 24m with a single rod and clamp devices allow up to 220mm clearance. The units have extendable stabilisers, extendable track, low/high pressure swivel and jet grouting timers.
Tel: +47 38 01 75 00
Fax: +47 38 01 49 70
Email: torstein.Pedersen@elkem.no
Over the last three years Elkem has developed the Multi-Grout complete rock injection system for tunnels and storage caverns. The system combines water blocker, timer, penetrator, cement and dispersant offering a reduction in groundwater in-leakage, control of settlement, reduction or elimination of waterproof membranes and contaminated water disposal.
The system was developed in answer to issues such as pre-grouting, post-grouting, large volume and/or high-pressure inflows, shallow overburden weakness zones and sensitive environmental constraints.
The Multi-Grout system has been adopted by the Norwegian Public Road Administration and has been successfully applied in several tunnel contracts including Storhaug and Romeriksporten.
Flexible Concrete Technical Services
Mobile: +44 7973 271454
Email:tech@flexibleconcrete.co.uk
Flexible Concrete Technical Services specialises in polyurethane and acrylic injection systems to waterproof, rehabilitate and stabilise structures, both over and underground.
FCTS’s service starts with system design and continues through supply of resins and ancilliaries to installation and injection by trained and approved specialist sub-contractors.
Areas of expertise include joint and crack sealing, waterstopping and leak sealing, soil nailing and ground anchors by resin injection.
Grace Construction
Tel: +44 1753 637613
Fax: +44 1753 637677
Email:chris.vonpatselt@grace.com
Exhibiting at Underground Construction.
For more than 40 years, US company Grace Construction Products has offered solutions to complex waterproofing problems.
Two products, Preprufe and Procor, designed for below slab applications, are being adapted for underground tunnelling use.
Preprufe is a pre-applied loose laid membrane bonded by the patented Advanced Bond Technology to seal concrete against water migration and leaks.
Procor sprayable coating has a self-vulcanising formula that chemically cures without loss of thickness. Using no solvents, Procor is applied in just one pass and bonds to green concrete and damp surfaces saving time in meeting crucial completion dates.
Häny Grouting Systems
Tel: +41 1 925 41 11
Fax:+41 1 923 62 45
E-mail: hany@hany.ch
In the past year, almost the entire range of the ZMP 700 series grout pumps has been re-designed. Most models are now available in horizontal and vertical versions.
New models of the ZMP 800 series will soon be available for high pressure grouting applications of up to 180bar.
The Häny HCM line of high-shear (colloidal) mixers are said to offer excellent mixing performance, efficiency and wear resistance. They will effectively mix water, bentonite, cement, clay, lime and other similar suspensions. The mixers can be equipped with a weigh-batching system to automatically batch and mix up to three dry components with water.
Compact grouting units IC 300 produce pressures of 100bar and are suitable for grouting tie-back anchors, soil nails and rock bolts, for tube à manchette and rock grouting as well as for bentonite mixing and pumping for microtunnelling and pipe jacking.
Mapei
Tel: +39 02 37673 1
Fax: +39 01 37673 214
Email: mapei@mapei.it
Founded in 1937 in Milan, Italy, Mapei is a major producer of adhesives, sealants and waterproofers for the construction industry.
With the addition of its product line of special repair mortars, Mapei has extended its reach into rehabilitation of infrastructure projects.
A large investment in research enables it to develop innovative products, one of which is the new generation of acrylic-based superplasticising admixture that contains alkali-free liquid accelerators to produce durable high performance shotcrete with zero slump.
MBT UGC Group/Meyco Equipment
Tel: +41 1 438 2210
Fax: +41 1 438 2246
Email: fred.kupferroth@mbt.com
Exhibiting at Underground Construction.
The MBT Underground Construction Group offers a vast range of products, but focuses on four main areas including chemicals, additives, and tools for, sprayed concrete, anchoring, injection, waterproofing and TBM operation.
Also available through MBT UGC is the Meyco Equipment range. Modular design and construction allows Meyco to tailor equipment to meet client specifications, for diverse sprayed concrete applications in mining, shafts, TBM drives, drill and blast tunnels and caverns with mechanised or hand held equipment using either wet or dry mix methods.
Recent developments include the Mamba Spraymobile, a compact unit with an overall height of 2.4m that offers impressive section coverage; and the Meyco Fix Fireshield 1350, a cementitous based mortar that protects the underlying structural concrete at temperatures of up to 1350°C. .
Tel: +358 17 83 241,
Fax: +358 17 8324 373
e-mail: juhani.asikainen@normet.fi
Normet produces mobile construction machines and equipment for underground mining and tunnelling. The company’s newest development is the Spraymec 2000 WPC Boomin, which combines concrete spraying and fully mechanised installation of heavy roof supports and wire mesh in one machine.
The Boomin erector-sprayer is a universal rock support machine for tunnels with up to 250m² profiles. It is suited for tunnelling sites with difficult rock conditions that require consistent rock support by means of steel supports and net. The 16m spraying reach allows the system to cover any practical tunnel face size.
The new SS-type Sprayboom allows easy and accurate nozzle positioning while the lifting Spraystand allows the nozzle operator to work at the optimal distance from the spraying area, regardless of size of the tunnel.
Normet claims a spraying output of 30m³/hour with its Spraypump 300 concrete pump, which can handle high quality, low W/C concrete mixes, mixes with high dosages of steel fibres, and mixes with powder or liquid accelerators.
Peri
Tel: +49 73 099 50 0
Fax: +49 73 099 50 176
Email: info@peri.de
Examples taken from a number of sites exemplify Peri’s current formwork technology.
Adding a fourth bore on the Elbe tunnel, Peri designed special formwork to allow the north ramp to be slabbed over; it tailored formwork for the tunnel portal collar at Niederhausen tunnel in Germany; and smoothed the construction sequence with flexible mobile formwork for the Soedra Laenken tunnel in Stockholm.
Self-propelled formwork carriages proved effective and saved time on the Entlisberg tunnel in Zurich.
Tel: +49 7127 599-0
Fax: +49 7127 599-520
E-mail: pmw@pmw.de
The advanced Putzmeister shotcrete manipulator, Wetkret WKM 133, can be operated in tunnels of just 4m height, using a new arm with a 13m vertical reach. The maximum output of the WKM 133 is 30m³/h.
Other shotcrete models on offer are the WKM 103 which employs different arm kinematics, and a truck-mounted Wetkret manipulator with a shotcrete pump for more flexible use.
The Putzmeister programme also includes mortar injection systems for continuous backfilling of formwork. There is a wide range of mortar injection pumps such as small units for filling anchor holes, compact worm pumps for low pressure applications and piston pumps for pressures up to 100bar.
Rascor
Tel: +41 1 857 11 11
Fax: +41 1 857 11 00
Email: info@rascor.com
Exhibiting at Underground Construction.
The Rascor group covers the whole field of preventive and remedial waterproofing.
The new Rascor White Tank system permits concrete to take on both a total waterproofing as well as a structural function, with sealing of all joints during construction to prevent leakage. The result in considerable savings in project completion times and cost.
Rascoflex grouts are based on environmentally friendly two-component acrylic resins and avail-able in a wide variety of formulations. Low viscosity and surface tension enables them to permeate and fill pores, capillaries, cracks joints, voids and gravel pockets.
Tel: +41 41 666 99 66
Fax: +41 41 660 23 32
Email: ba-civil-engineering.sfin@srana.com
Swiss company Sarnafil’s civil engineering membranes offer a solution wherever water ingress is likely to become a problem, on tunnels and structures below groundwater level, or where groundwater requires protection from refuse dumps or tank installations.
The benefits of polymeric membranes are claimed to be the long life resistance of sustained pressure, and mechanical strength, with service tailored to specific applications.
Tel: +49 5525/201-0
Fax: +49 5525/201-48
Email: info@sk-walkenried.de
Schmidt, Kranz & Co’s SK products include hoisting engines, hydraulic power equipment, material handling systems, waste disposal systems and skip and cage cable pulleys.
The company also offers water and resin injection and grouting systems in tunnel construction. They include single packers for injection and grouting in soft and hard rock; double packers for measuring gaseous media in soft and hard rock; the IRMA injection tube for rock bolting and consolidation; and borehole seals for sealing the borehole during injection of resins or cement slurry.
Sireg
Tel: +39 039 627021
Fax: +39 039 615996
Email: sales@sireg.it
Exhibiting at Underground Construction.
A wide range of products for ground improvement and reinforcement come from Sireg, varying from sleeved grouting pipes to composite materials for temporary and permanent ground consolidation, as well as drainage pipes.
Sireg claims to top the list of European geotechnical products manufacturers. This has been achieved through possibilities for wholly customising each product to client needs, and through continuous collaboration with some of the most important contractors and consulting engineers worldwide.
Specialist Plant
Tel: +44 1234 781882
Fax: +44 1234 781992
Email: specialist.plant@virgin.net
Specialist Plant airlocks and compressed air tunnelling systems are used to allow TBM use in water bearing ground or where ground support is needed. Specialist Plant designs, constructs, installs and operates complete systems, which include air supply and regulation, bulkhead, boiler and TBM locks, plus medical decompression chambers on the surface. Equipment is offered on rental or sale.
Recent successfully completed jobs include the LAS 3 project, Longchamps, Paris, where Specialist Plant supplied and installed a tunnel bulkhead and personnel lock, a gas pipeline repair job in Taiwan which required a vertical airlock with staged decompressions and the Singapore North East line where equipment was supplied for two contracts.
Tel: +49 89 23 23 73
Fax: +49 49 89 23 23 73
Email: contact@Tachus.de
Tachus is working towards increased performance in tunnel construction in soft rock or soils with minimal cohesion where, in the past, excavation and shotcrete methods have predominated.
The Tachusmatic consists of a cutter, mounted in a metal frame, which is braced circumferentially into the finished concrete tube by sectional steel elements, so-called slipformers. Also within the machine frame is the mucking equipment, for example a chain conveyor.
A slit is cut out around the circumference of the tunnel in advance of excavation. When at a sufficient width, a slipformer is advanced along the line of the tunnel and a chamber created, bounded by the slipformer, the rock and the concrete support of the last section.
This chamber is filled with concrete and a segment of the tunnel support is cast, without rebound of shotcrete and without any need for support arches.
Webac-Chemie
Tel: +49 (0)40 67057-0
Fax: +49 (0)40 6703227
Email: info@webac.de
Exhibiting at Underground Construction.
As a specialist manufacturer of polyurethane and epoxy injection resins, Webac is represented throughout Europe, Brazil, Egypt, Singapore, the UAE and USA.
Webac offers a wide and comprehensive range in waterproofing and concrete repair, products from which are used in many tunnelling projects world-wide. Systems include polyacrylate gels, fully approved for curtain injection by the Germany railways (DB), products for soil stabilisation and other special materials such as epoxy repair mortars that can even be applied underwater.
ZBC Resins and Equipment
Tel: 91 677 23 47
Fax: 91 677 23 47
E-mail: zbc@eresmas.com
ZBC specialises in manufacturing and applying resins for waterproofing. It also sells and rents equipment and accessories for applying resins. For tunnels it makes products which are water-reactive – for immediate leak stoppage; bicomponent – for filling cavities at contact points and junctions; epoxidical – for injecting into cracks and joints in concrete; and low viscosity acrylics.
