Road Construction Chemicals
Product Position:
Medium-setting asphalt emulsifier is a cationic quaternary ammonium salt surfactant specifically designed for prime coat, tack coat and seal coat applications. It features excellent emulsifying capacity and storage stability, capable of emulsifying various road petroleum asphalts. No acid adjustment is required during production, offering easy operation.
The emulsifier is added to the water phase to prepare the soap solution. The soap solution is then combined with heated asphalt or bitumen through a colloid mill to produce a cationic medium-setting emulsion.
The positive charge of the emulsifier helps the asphalt droplets interact with mineral aggregates during paving. By adjusting the formulation and processing conditions, asphalt producers can develop emulsions with the required storage stability, mixing behavior, breaking rate and coating performance.
The product is suitable for manufacturers of asphalt emulsions, road-material suppliers, pavement contractors and highway maintenance companies sourcing a medium-setting bitumen emulsifier for bulk production.
|
Model |
Packaging |
Storage |
Note |
|
HDC-ZC |
50 kg/barrel (plastic barrel); custom packaging available upon request. |
Cool, dry place, avoid direct sunlight; shelf life 12 months |
Non-hazardous; avoid prolonged skin contact
|
|
Component |
Ratio (%) |
Remarks |
|
Asphalt (AH-70/90) |
55-60 |
Heat to 130-140℃ |
|
Emulsifier (active) |
0.3-0.6 |
Dissolve in 60-70℃ hot water |
|
Water |
to 100 |
Soap solution at 45-55℃ |
|
Parameter |
Specification |
Test Method |
|
Appearance |
Milky white or light yellow paste |
Visual |
|
Active Content |
≥50% |
GB/T 5174 |
|
pH value (1% aqueous solution, 25 ℃) |
2.0 – 4.0 |
GB/T 6368 |
|
Density（25℃） |
0.95 – 1.05 g/cm³ |
GB/T 4472 |
|
Solubility |
Freely soluble in hot water |
Visual |
|
Recommended Dosage |
0.8% – 1.5% (by emulsified asphalt weight) |
— |
• Superior emulsifying power, dosage only 0.3%-0.6% of asphalt weight (on active basis)
• Ready-to-use without acid adjustment, simplifying production
• Produced emulsified asphalt exhibits excellent storage stability, no stratification in 5 days
• Good compatibility with various asphalt sources (AH-70, AH-90, AH-110)
• Moderate breaking speed, meeting prime coat and tack coat requirements
Medium-setting cationic emulsions can be used for prime-coat systems on granular or lightly treated bases. The emulsion helps improve surface binding and prepare the base for subsequent asphalt layers.
The emulsifier can be used to formulate cationic emulsions for tack coats. A properly designed tack coat improves bonding between pavement layers and helps reduce slippage or debonding.
Medium-setting emulsion systems are used in selected seal-coat and surface-treatment formulations. The appropriate emulsion grade should be selected according to aggregate size, surface condition, climate and traffic requirements.
An asphalt emulsifier for chip seal must be matched to the binder, aggregate and required breaking behavior. This product can be evaluated for selected chip-seal or surface-dressing formulations where medium-setting characteristics are appropriate.
For high-traffic or fast-opening projects, the final emulsion design may require a rapid-setting or polymer-modified system. Laboratory testing should be completed before field application.
CMS emulsions can also be evaluated for selected cold-mix and open-graded applications where adequate mixing time and controlled setting are required.
When preparing a CMS asphalt emulsion, the following factors should be evaluated together:
| Formulation Factor | Why It Matters |
|---|---|
| Asphalt or bitumen grade | Influences emulsion viscosity and stability |
| Aggregate mineralogy | Affects coating, adhesion and breaking behavior |
| Water quality and hardness | May influence emulsifier performance |
| Emulsifier dosage | Determines droplet stability and setting characteristics |
| Soap-solution pH | Affects cationic charge and emulsion behavior |
| Asphalt and soap-solution temperature | Influences colloid-mill processing |
| Target emulsion grade | Determines whether CMS-1, CMS-2 or another local grade is required |
| Storage and application conditions | Affects handling, sprayability and breaking time |
The final dosage and processing conditions should be established through laboratory emulsion testing rather than by using a universal dosage for every asphalt source.
Before requesting a product recommendation, buyers should prepare the following information:
For micro-surfacing, use the dedicated Micro-Surfacing Asphalt Emulsifier. For pavement recycling, see the Cold Recycling Asphalt Emulsifier. Polymer-modified systems can be evaluated with SBR Latex or other compatible modifiers.
Huadingcheng supplies a complete range of asphalt additives for asphalt emulsion production, pavement maintenance and road rehabilitation. This product family allows buyers to source medium-setting emulsifiers together with slow-setting, micro-surfacing, recycling and polymer-modification additives from one manufacturer.
Our technical team can assist with product selection based on the asphalt binder, aggregate and target application. Product-specific technical data, packaging and supply information can be provided for procurement evaluation.
No. It is an emulsifier concentrate used to produce cationic medium-setting asphalt or bitumen emulsion. Asphalt, water and the emulsifier are processed together in an asphalt emulsion plant.
CMS generally refers to a cationic medium-setting asphalt emulsion. The CMS asphalt emulsifier is the surfactant used to prepare this type of emulsion.
It can be evaluated for selected chip-seal or surface-dressing formulations. The final suitability depends on the aggregate, asphalt binder, traffic conditions and required breaking rate. Rapid-setting emulsions may be preferred for some chip-seal projects.
“Asphalt emulsifier” is more common in North American searches, while “bitumen emulsifier” is frequently used in Europe, the Middle East, Africa and Asia. Both terms can describe an emulsifier used to produce a bituminous emulsion.
No. The required dosage varies with binder chemistry, aggregate mineralogy, water quality, temperature and the target emulsion grade. Laboratory testing is recommended before production.
Looking for a Cationic Medium-Setting Asphalt Emulsifier for asphalt emulsion production, pavement maintenance or selected chip-seal applications? Send us your asphalt grade, aggregate information, target emulsion type and estimated quantity.
Visit our technical services page or contact us for product information and a bulk quotation.
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