Gotthard Railway Base Tunnel Sections Bodio / Faido and Sedrun Switzerland

Sika

at W

ork

No. 01.09 - January 2009 Infrastructure Projects

Photo: AlpTransit Gotthard AG

Railway Tunnel

Minimales Ausbreitmasszur Pumpbarkeit über 100 mDurchmesser 100 mm

Frühester Abbindebeginnfür sicheres Pumpen nach 6 Stunden

AlpTransit Gotthard Prequalification System

10

20

30

40

50

60

0 h 1 2 3 4 4 5

6 h 8 10

12 h 14 16

18 h 20 22

24 h

Superplasticiser (HRWR)Guaranteed workability for actual mix design (w/c ratio)

Stabilizer (ST)Guaranteed Workability (pumpability)

Retarders (Ret)Guaranteed workability time (6 to 8 hours)

Hardening Accelerator (HBE) In Situ ConcreteGuaranteed early strength (5 N/mm2 after 12 hours)

Setting Accelerator Sprayed ConcreteGuaranteed early strength (3 N/mm2 after 4 hours)

Flow table spread cm

hours

Sika SolutionsSika® ViscoCrete® SuperplasticiserSigunit® Shotcrete AcceleratorSikaTard® Long Time RetarderSika®-PM Shotcrete Spraying SystemAliva® TBM-RobotorSikaPlan® Waterproofing MembraneSikacrete® Fire Protection Mortar

Sika is involved in this project since more than 15 years. Already during the design phase Sika’s engineers could provide valuable consultancy services for the concrete and sprayed concrete systems as well as for the complete waterproofing concept. Through an extremely complex pre qualification procedure, Sika qualified for the supply of material to the Gotthard project. Sika system solutions have been used since 1994 during the construction of the sounding tunnel and since the end of 2002, Sika concrete admixtures, Sika-PM shotcrete systems, Aliva-TBM robots and SikaPlan waterproofing concepts are being supplied to numerous construction lots.

AlpTransit Gotthard is creating a flat rail link for future travel through the Alps. At the heart of the new transalpine rail route is Gotthard Base Tunnel. With a length of 57 km, the world’s longest tunnel should become operational at the end of 2016.

The high requirements from project and contractors have again and again lead to new innovative solutions, especially in the field of Sika® ViscoCrete® technology to reach the required long open times in combination with very high early strength requirements.

by Jürg Schlumpf, Sika Services AG

Sections 554 Bodio & 452 FaidoCharacteristics and main Dimensions:Two single-track tunnels at 40m centre distance Diameter 8.8m resp. 9.4m Length 2 x 14.4km resp. 2 x 11.1km Emergency stop station Faido

Tunnelling method:2 rock TBM’s type Herrenknecht

Section 360 SedrunCharacteristics and main Dimensions:Two single-track tunnels at 40m centre distance Diameter up to 13m Length 2 x 7.5km Emergency stop station Sedrun Logistic shaft 800m deep

Tunnelling method: Drill and Blast

Sika Services AGCorporate Business Unit ConcreteTüffenwies 16CH-8048 ZürichSwitzerlandPhone +41 58 436 40 40 Fax +41 58 436 47 29www.sika.com ©

Sik

a Se

rvic

es A

G /

BU C

oncr

ete

/ Sik

a at

Wor

k / I

nfra

stru

ctur

e Pr

ojec

ts /

07.1

0 / g

ho

Sections 554 Bodio & 452 FaidoMain Contractor: Consortio TAT:Implenia Bau AG, Aarau SwitzerlandAlpine Mayreder GmbH, Salzburg AustriaCSC Impresa Construzioni SA, Lugano SwitzerlandImpregilo S.p.a. Sest S. Giovanni, ItaliyHochtief AG, Essen Germany

Engineering Contractor:EWE Electrowatt Engineering AG, Zürich SwitzerlandLombardi SA Ingegneri Consulenzi, Minusio SwitzerlandAmberg Ingenieurbüro AG, Switzerland

Client:AlpTransit Gotthard AG, Luzern Switzerland

Section 360 SedrunMain Contractor: Consortium ARGE TRANSCOImplenia Bau AG, Aarau SwitzerlandFrutiger AG, Thun SwitzerlandBilfinger Berger AG, GermanyPizzarotti SA, Italy

Engineering Contractor:EWE Electrowatt Engineering AG, Zürich SwitzerlandLombardi SA Ingegneri Consulenzi, Minusio SwitzerlandAmberg Ingenieurbüro AG, Switzerland

Client: AlpTransit Gotthard AG, Luzern Switzerland

Picture: AlpTransit Gotthard AG