Uses
Sikament®-520 BA is used as a superplasticizer to produce free-flowing concrete for:
- Slabs
- Foundations
- Walls
- Columns
- Piers
- Slender components with dense reinforcement
- Piles
Additionally, it serves as a water-reducing agent that promotes high early strength concrete for:
- Pre-cast concrete elements
- Pre-stressed concrete
- Bridges and cantilever structures
Characteristics / Advantages
As a Superplasticizer:
- Significantly improves workability
- Facilitates easy placement of concrete
- Ideal for slender components with tightly packed reinforcement
- Requires less vibration
- Enhances the cohesion of the concrete mix, reducing the risk of segregation and allowing more time for placement
As a Water Reducer:
- Provides excellent water reduction
- Enhances final strength of the concrete
Approvals / Certifications
Sikament®-520 BA meets the standards of ASTM C494; Type G and EN 934-2.
Product Information
- Composition: Sulphonated naphthalene
- Packaging: Available in 1000 L flowbins; bulk supply in tanker trucks upon request
- Appearance / Colour: Brown liquid
- Shelf Life: 12 months when stored properly
- Storage Conditions: Store in original, sealed packaging in dry conditions, between +5°C and +45°C, away from direct sunlight and frost.
- Density: Approximately 1.20 kg/l (+25°C)
- Total Chloride Ion Content: Nil (EN 934-2)
Technical Information
- Concreting Guidance: Follow standard best practices for concrete production and placement when using Sikament®-520 BA. Ensure proper curing of fresh concrete, especially in high temperatures, to prevent plastic and drying shrinkage. Consider using Sika® Antisol® products or wet hessian for curing.
Application Information
- Recommended Dosage: 0.8 – 2.5% by weight of binder. Higher dosages may be required depending on the mix design, materials, climatic conditions, and concrete needs. Perform trial mixes to determine the exact dosage.
- Dispensing: Add Sikament®-520 BA to the gauging water or mix it simultaneously with the water in the concrete mixer at the batching plant. Do not add it directly to the dry mix. For optimal performance, ensure thorough mixing with at least 60 seconds of wet mixing time.
- Compatibility: Sikament®-520 BA can be combined with all types of Portland cement (OPC and SRC) and concretes containing pozzolanic materials like GGBS, PFA, micro-silica. It is also compatible with other Sika products such as SikaPump®, Sika® FerroGard®-901, SikaFume®, SikaFiber®, Sika Aer®, Sika® Stabilizer, Sika®-1 WT, and Sika® WT-10. Perform trial mixes to verify performance when combining Sikament®-520 BA with these or other admixtures. Consult Sika Technical Department for guidance.
For best results, fine-tune the concrete mix with the remaining gauging water after two-thirds of the mixing time to avoid excess water.
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