Systems: Tunnels
Watertight Concrete
Concrete for watertight structures formulated with advanced Sika admixtures Viscocrete and Sika 1 adapts to individual design criteria and meets highest quality performance criteria. Sika “White Box” concept comprising watertight concrete and joints waterproofing leads to durable and economic watertight concrete structures.
Membrane Systems
A tunnel structure has to be waterproofed either with a drainage system, a waterstop system or with the active control system for highest safety comprising a double layer membrane and controlled by vacuum. Sikaplan PVC and TPO sheet membrane systems are designed for long-term durability and ease of application. They include accessories and special solutions up to last and complex detail.
Joints Waterproofing
Tunnel section joints, connections to transverse galleries and invert to wall joints, are some of the many places where reliable sealing is required. Sika and Tricosal water stops, Sika Combiflex and Dilatec adhesive tapes, SikaSwell profiles and sealants and SikaFuko injection hoses allow the design of the correct and practical sealing solution for each and every type of joint in the structure.
Primary Water Drainage
Complete Tunnel Water Drainage System based on channel and selected components for primary -spotwise- water drainage in tunnels and mines, in connection with shotcrete application.
Drainage System
Optimal drainage solutions for excavated tunnels. The key element of this system is the multifunctional plastic drainage profile, which allows the use of loose gravel for the filter bed around the drainage pipe.
Waterproofing Injection
Sika Injection Systems include a full range of polyurethane foams and resins, acrylic and cementitious injection materials completed with injection horses, packers, injection pumps and other accessories. Application know-how and site support are important services Sika may offer in projects.