Description USES Sika®-4a is typically used as an initial waterproofing treatment on wet surfaces or in areas with general water leakage before applying cement-based render or gunite. Common applications include tunnels, culverts, mine galleries, water reservoirs, concrete pipes, and manholes. It can also be mixed into quick-setting mortar for tasks such as securing anchors, bolts, and other fittings that need to bear loads early in rock or concrete structures. CHARACTERISTICS / ADVANTAGES Sika®-4a offers several advantages, including: Fast setting for rapid leak sealing or repairs Simple to use; just add clean water and regular Portland cement Free from chlorides Solvent-free PRODUCT INFORMATION Chemical Base: A blend of inorganic chemicals Packaging: Contact Sika for details Appearance / Colour: Clear liquid Shelf Life: 12 months Storage: Store in a dry, cool place, in its original sealed packaging, at temperatures between 5°C and 30°C. Keep away from direct sunlight, frost, and contamination. Density: Approximately 1.25 g/cm³ pH-Value: Around 12 Total Chloride Ion Content: ≤ 0.1% APPLICATION INFORMATION Recommended Dosage: Sika®-4a to water ratio: 1:1 to 1:4, depending on the specific use Cement to Liquid Ratio: About 3:1 Ambient Air Temperature: Between 5°C and 35°C Substrate Temperature: Between 5°C and 35°C
