Liquid Defoamer for Concrete is a high-efficiency, specialized anti-foaming agent formulated as a white milky emulsion (or clear in some non-silicone grades) designed to control and eliminate unwanted foam in ready-mix concrete, precast, and other cement-based systems. It disperses rapidly during mixing, quickly breaking persistent air bubbles caused by high-shear agitation, superplasticizers, or surfactants, while preventing new foam formation throughout pumping, placement, and finishing.
This additive ensures dense, smooth, void-free concrete surfaces without pinholes, honeycombing, or surface defects, improving aesthetics, strength, and durability.
Key Features & Advantages
- Instant & Persistent Defoaming — Breaks foam rapidly and controls it during the entire process (mixing to placement).
- High Compatibility — Works excellently with polycarboxylate superplasticizers (PCE), retarders, accelerators, and various cement types.
- Very Low Dosage — Effective at 0.01–0.3% by cement weight, cost-efficient with negligible impact on other properties.
- Superior Surface Quality — Eliminates bubbles, pinholes, and voids for smooth, professional finishes.
- No Strength Reduction — Maintains or even slightly enhances compressive and adhesive strength.
- Easy Dosing & Stability — Liquid form allows precise metering; stable emulsion with long shelf life.
Typical Applications
- Ready-mix concrete (pumped or long-distance transport)
- Precast concrete products (panels, blocks, pipes)
- Self-compacting concrete (SCC) and high-flow mixtures
- Shotcrete and sprayed applications
