Synthetic Air-Entraining Agent (Sodium Lauryl Sulfate)
CAS Number: 151-21-3
Sodium lauryl sulfate (SLS)-based synthetic air-entraining agent is a high-purity surfactant admixture that generates a stable, finely dispersed air void system in concrete. It offers excellent consistency and reproducibility compared to natural resin-based AEAs, and is particularly effective in concrete mixes containing fly ash or slag. Compliant with ASTM C260 and widely used in precast and ready-mix concrete.
Technical Specifications
| pH | 7.5-9.5 |
| appearance | White to off-white powder |
| purity (%) | 93±2 |
| moisture content (%) | ≤3 |
| air content in standard mortar (%) | ≥12 |
Applications
- Precast concrete requiring consistent air content
- Ready-mix concrete with supplementary cementitious materials
- Concrete exposed to freeze-thaw and de-icing salts
- Self-compacting concrete with air entrainment
- Foamed concrete and lightweight insulation blocks
Key Features
- Superior consistency and reproducibility vs. natural resin AEAs
- Highly effective in SCM-rich concrete mixes
- Water-soluble powder form allows easy on-site dissolution
- Stable air void system resistant to mixing and transport disturbance
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