What it helps prevent
Pinholes, bugholes, foam bands, reduced density, unstable pump pressure, and uneven finish (system-dependent).
Product Construction Chemicals
Defoamer for Cement Systems
Defoamer / air-release additive used to reduce foam and entrained air during mixing, pumping, and finishing—supporting density consistency, surface quality, and stable placement in cementitious applications.
Formats: powder for dry mix and/or liquid for admixture lines (grade dependent)
Documentation: SDS / TDS; COA on request
Packaging: bags / drums / IBC / bulk (as applicable)
Commercial focus: consistent performance + cost-in-use (dosage & stability)
Supply coordination: repeat procurement and export documentation workflow
Trial support: recommended starting dosage + addition points
Commercial overview
Foam and unwanted air in cementitious mixes can reduce density, create pinholes and voids, increase permeability, and cause instability during pumping and spraying. A dedicated cement-system defoamer helps control these issues—especially in formulations that include water reducers (PCE/lignosulfonate), surfactants, redispersible polymer powders (RDP), cellulose ethers, latex, or air-entraining side effects.
- More consistent density and yield (less variability from trapped air)
- Improved surface appearance (reduced pinholes/bugholes, system-dependent)
- More stable pumping / spraying (less foam collapse variability)
- Supports repeatability for site and factory production
Applications
Typical usage patterns. Tell us your formulation and performance targets and we’ll recommend a compatible grade for your admixture line or dry-mix recipe.
- Dry-mix mortars: tile adhesives, renders, repair mortars, EIFS, skim coats
- Grouts and injection grouts where void control and pump stability matter
- Self-leveling compounds where air-release supports smooth finish
- Concrete admixture systems (batch plant or site mixing), including pumped mixes
- Cement slurries and specialty cementitious formulations with surfactants/polymers
Works alongside
PCE, lignosulfonate, cellulose ethers, RDP/latex, surfactants—when formulation generates foam/air.
Key performance targets
Air reduction, air-release rate, finish quality, density/yield stability, and minimal side-effects.
Grade selection guide
Cement systems can foam for different reasons: surfactants and polymers stabilize foam; mixing introduces air; pumping can generate microbubbles. Selecting the right defoamer requires balancing air reduction with workability and surface finish.
Powder grades (dry mix)
Designed to blend uniformly with dry mortar recipes. Helps reduce foam generated by RDP/cellulose ethers during mixing. Focus: consistent performance, minimal clumping, and stable shelf handling.
Liquid grades (admixtures)
Suitable for batch plants or admixture tanks. Often selected for easier dosing control and rapid action in wet systems. Focus: stability, pump compatibility, and consistent dosing response.
Fast air-release vs persistence
Some systems need quick release to improve finish; others need sustained control in recirculation/pumping. We match by trial.
Compatibility window
Must be compatible with your water reducer and polymer package to avoid changes in flow, set behavior, or strength (system-dependent).
Workability sensitivity
Excessive defoaming may change rheology or perceived creaminess. We recommend optimizing dose to meet finish and strength targets.
Cost-in-use
Best value is determined by effective dose and consistency—not price per kg. We quote with dosage range and format in mind.
Note: Final suitability must be validated in your formulation/process. Share your current defoamer (if any) and observed foam behavior.
Technical details
The ranges below support engineering review. Exact values depend on selected grade (powder vs liquid). Request a TDS for the specification aligned to your formulation.
Function
Foam control + entrained air reduction; supports air-release in cementitious matrices
Format options
Powder (dry mix) and/or liquid (admixture), grade dependent
Process stage
Mixing, pumping, spraying, finishing; targeted addition point depends on system
Typical properties (indicative, grade dependent)
Your quotation will specify the selected grade values.
| Property | Powder grade (typical) | Liquid grade (typical) | Why it matters |
|---|---|---|---|
| Appearance | Free-flowing powder | Liquid / dispersion (grade dependent) | Handling, dosing method, mixing behavior |
| Active content | Grade dependent | Grade dependent | Influences dosage and cost-in-use |
| Bulk density / density | Grade dependent | ~0.85–1.05 g/cm³ (grade dependent) | Packaging fill, dosing calibration |
| Dispersibility | Designed for uniform distribution in dry mix | Designed for fast action in wet systems | Controls speed and uniformity of defoaming |
| Performance focus | Entrained air reduction, finish support | Rapid defoaming, pump stability (by grade) | Matched to your foam source and process step |
| Storage & handling | Dry storage, sealed packaging | Protect from extreme temperatures; mix before use if required | Ensures consistent performance across batches |
Engineering note: Excessive defoamer dosing can negatively impact workability/air system balance. Optimize by trial against target density, strength, and finish.
Typical dosing approach
Start with a conservative dose and adjust based on density/air content and finish. Addition point (water vs dry mix vs admixture tank) has a strong effect on performance.
Compatibility checks
Confirm with PCE/lignosulfonate, polymers (RDP/latex), and cellulose ethers to avoid changes in flow, set, or strength (system-dependent).
Documentation pack
SDS + TDS for engineering/QA review; COA available for delivered batches on request (by lane and destination).
Typical specifications & formats
Values depend on grade and customer requirements. Confirm details on quotation. We can source powder grades for dry mixes and liquid grades for admixture systems based on your process and packaging preferences.
Chemistry
Cement-system defoamer / antifoam (grade dependent)
Format
Powder (dry mix) and/or liquid (admixture) options
Performance options
Air reduction / air-release support / process-specific balance
Packaging
Bags / supersacks; drums / IBC (as applicable)
Documentation
SDS + TDS; COA on request
Selection inputs
Formula system, target air, process step, mixing energy, and finish/strength requirements
MOQ & lead time
Varies by grade, packaging, and destination lane. Ask for a quote to confirm availability and shipping terms.
Quality lane
Batch traceability and consistent specs supported through documentation workflow (by lane).
Export readiness
Labeling and shipment documentation aligned to destination requirements.
Specifications may vary depending on batch, origin, and packaging selection.
FAQ
Quick answers for engineering and procurement review.
Will it reduce strength by changing air?
The goal is to remove unwanted air that reduces density and creates voids. However, if your design requires intentional air entrainment, dosing must be controlled. Share your target air content and test results for best alignment.
Powder or liquid—what should I choose?
Powder grades are common for dry-mix mortar producers. Liquid grades fit admixture tanks and wet dosing lines. The best choice depends on your process and where foam is generated.
Does it affect workability or flow?
Defoamers can influence perceived workability if overdosed. We recommend optimizing dose based on density/air content, flow targets, and finish.
Where should I add it?
Addition can be into the dry blend, mixing water, or admixture line (grade dependent). Correct addition point often reduces consumption.
What documentation is available?
SDS + TDS for engineering/QA review; COA can be supplied on request for delivered batches (by lane).
What do you need for a quote?
System type, format (powder/liquid), estimated volume, packaging, destination, and any target air/finish requirements.
Request quotation
Get pricing, lead time, and a grade recommendation for your cement system (powder for dry mix or liquid for admixture lines). If you need SDS/TDS/COA or destination labeling, note it in the message—we’ll include it in the offer package.
Fast quote inputs
System type + format + volume + destination are the quickest path to an accurate offer.
Trial support
We can propose a starting dosage plan aligned to your formulation and process step.
Procurement lane
Repeat ordering supported with consistent packaging and documentation workflow.