Structural design and construction with precast concrete elements require versatile products, from wet precast production to erection on site. Sika, a full range supplier, meets the diverse complexity of the entire precast concrete element production and construction process with solutions for all requirements.
Systems Plus Knowhow
In wet precast concrete production and application, there are many factors to consider. Do you need swift concrete production with ensured concrete performance? Or extended service life and surface appearance that never loses its aesthetic integrity? When it comes to concrete, Sika provides more than admixtures. We provide both expertise and comprehensive systems to help solve your problems and challenges.
Concrete production
Surface appearance
Repair
Bonding
Anchoring
Grouting
Basement waterproofing
Protection
Sealing
1. Concrete Production
Workability Improvement
High range water reduction combined with required workability time with Sika® ViscoCrete®
Secured production of self-compacting concrete even in the presence of difficult raw materials with Sika® ViscoCrete® and Sika® Stabilizer-40
High Early Strength Development
High water reduction leading to fast early strength development and high final strengths with Sika® ViscoCrete®
Effective acceleration with SikaRapid®-2 (set accelerator) for ensured early green strength
Extended Durability
Extended longevity of concrete with the highest concrete impermeability with Sika® ViscoCrete® and SikaFume®
Durability enhancement with regard to shrinkage crack reduction, fire resistance or impact resistance with SikaFiber®
Protection against chloride-induced corrosion with Sika® FerroGard®-901 integral corrosion inhibitor
Defined air-entrainment independent of the mixing process with SikaControl® -140 AER
2. Surface Appearance
Mold Release Agent
FuWll oil based standard mold release agent with Sika® Separol® GU
Production of Exposed Aggregate Concrete
Efficient production of exposed aggregate surfaces with Sika® Rugasol®
Coating to Improve Appearance and Durability
Aesthetic colored protective coating against aggressive atmospheric influences with Sikagard®-550 W Elastic
Improved Concrete Surfaces and Finishing
Improved concrete cohesion leading to fast and easy finishing with Sika® ViscoCrete®
Environmentally friendly water-based emulsion mold release agent leading to best surface appearance with Sika® Separol®
Surface retardation applied on the form work with Sika® Rugasol® paste
Surface improving admixture with no side effect on other concrete parameters with SikaControl®
3. Repair
Repair of Cracks
Repair of Broken Edges
Refurbishment of Honey Combs and Pore Filling
Repair of Structural Concrete Spallings
Refurbishment of small cracks (< 2 mm) with Sikadur® injection resin
Repair of large cracks (> 2 mm) with Sika MonoTop® (repair mortars) and Sikadur®-31 DW (epoxy repair)
Repair of broken edges with Sika MonoTop® (repair mortars)
Achieve a fine texture with Sika MonoTop® (levelling mortars)
Epoxy-based repair mortar Sikadur®-43 ZA
Repair with high aesthetic appearance (fine texture) with Sika MonoTop® (leveling mortars)
High-quality repair with no special aesthetic requirements with Sika MonoTop®-412 NFG (repair mortar) and Sika MonoTop®-723 N (pore sealer)
Safe structural concrete decays with a thickness layer up to 120 mm with Sika MonoTop®-4200 Multi Flow (repair mortar) and Sikadur®-43 ZA (epoxy mortar)
4. Bonding
Bonding of Concrete Elements
Bonding of Gasket
Bonding with Special Application
Bonding to different substrates with Sikadur®-31 DW range and Sikadur®-30
Highly durable, easy to install bonding of rubber gasket in connecting sleeve with Sikaflex®
Bonding of concrete elements with drinking water contact with Sikadur®-31 DW (with drinking water approvals)
5. Anchoring
Installation of Anchors After Element Production
Early Loading
Solution where Mechanical Anchors Do Not Work
Special Applications / Substrates
Anchoring for non regulated applications with Sika AnchorFix®-S
Post fixing of anchors for regulated applications with Sika AnchorFix®-2+
Post fixing of anchors & rebars for regulated applications with Sika AnchorFix®-2+
Anchoring with shorter pot life for early loading and cold ambient conditions with Sika AnchorFix®-S, Sika AnchorFix®-2+
Application of Sika AnchorFix®-2+ (with extended pot life) in hot climate conditions.
Use of bonded anchors instead of mechanical anchors: Sika AnchorFix® S or Sika AnchorFix®-2+
Use of high-performance bonded anchors to reduce the embedded depth with the same load performance: Sika AnchorFix®-2+
Application in critical substrates (in terms of staining):
Sika AnchorFix®-2+
Application in cracked concrete & seismic zones:
Sika AnchorFix®-2+
Application in drinking water areas:
Sika AnchorFix®-2+
Application for a declared resistance to fire:
Sika AnchorFix®-2
6. Grouting
Grouting of Post Tensioned Prestressing Tendons
Load Requirements
Temperature Requirements
Special Requirements
Filling of post-tensioning ducts with cementitious SikaGrout®-300 PT
Grouting with subsequently early applied loads: Sikadur®-42 ZA
Grouting at ambient temperatures below + 5 °C with Sikadur®-12 Pronto
Grouting with a good bond strength to steel with Sikadur®-42 ZA
Grouting of parts exposed to dynamic loads with Sikadur®-42 ZA
Grouting of parts exposed to chemicals with Sikadur®-42 ZA
7. Basement Waterproofing
Surface Waterproofing and Protection
| Watertight Concrete Structure |
Injection Systems
Pre-applied: Sheet membrane SikaProof® A is applied already in the factory before reinforcement and concrete. The benefit is an efficient process, especially on-site, where only the joints have to be sealed (less time consuming)
Post-applied: Adhered SikaProof® P, Sika Index sheet membranes are applied on-site when the elements are set
Post-applied: Liquid applied membranes Sikalastic® are applied on-site when the elements are set
Internal joint sealing with Sika® Waterbar®, SikaSwell® or SikaFuko® (re-injectable hose)
External joint sealing with Sikadur Combiflex® SG
Admixtures to create a waterproofed concrete for the precast elements and for the in-situ core concrete with Sika® ViscoCrete®, Sika®-1, or SikaControl® WT
Joint Sealing is the key and essential to creating a watertight concrete system: Sika® Waterbar®, SikaSwell®, Sikadur-Combiflex® SG, and SikaFuko® (re-injectable hose)
Simple, fast and efficient injections of cracks, joints or voids with Sika®-Injection (foams & resins) based on various technologies
Precaution or repair injection in a specific joint by pre-applied (before concreting) re-injectable hose: SikaFuko®-System
8. Protection
Protection of Fair Faced Concrete Elements
Protection Systems Against Weathering
Protection System Against Chemicals
Concrete Curing
High-performance hydrophobic impregnation with Sikagard®-706 Thixo and Sikagard®-705 L
Elastic protection system suitable for crack-bridging with Sikagard®-550 W Elastic
Rigid protection system for slight mechanical loading: Sikagard®-550 W
Secured protection against high chemical attack with epoxy coatings
Sikagard®-63 N
Protection against medium attack for tubbing segments with Sikafloor®-155 W
Efficient concrete curing on which organic-based coating can be applied without
substrate preparation with Sikafloor® ProSeal W
Curing with high water retaining action (substrate preparation required) with Sika® Antisol®
9. Sealing
Sealing of Movement Joints
Sealing of Connection Joints
Sealing of Floor Joints
Sealing of Special Applications
±25% movement capability and high weathering resistance with Sikaflex® Construction, and Sikaflex® AT Facade
±25% movement capability and good adhesion to many substrates with Sikaflex® AT Facade
High mechanical resistance and meets EN 15651-4 requirements with Sikaflex® PRO 3
High mechanical resistance and high chemical resistance with Sikaflex® PRO 3