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T-Pave International offers a wide range of TephamineTM bitumen emulsifiers to suit the local project requirements with local raw materials.

Selecting the appropriate emulsifier to formulate a suitable bitumen emulsion for a specific application requires a combination of chemical knowledge and application knowhow. In addition, compatibility testing is needed based on the local raw materials such as aggregate, cement, water, additives, etc. Our technical team will provide these supports thoroughly upon completing feasibility studies before recommending any products. Our R&D team also has the ability of tailor-making a recipe or using a dual-emulsifier system to meet the best application requirement.

The shelf- life of the road depends very much on the adhesion between the aggregate and the bitumen. If water is present at the interface between the bitumen and aggregate, it will reduce the adhesiveness and cause stripping of the bitumen from the aggregate surface. This type of water damage will cause a series of symptoms on the road pavement such as: rutting, shoving, raveling, loss of chipping (for surface dressing), pothole, etc and eventually lead to the failure of the road structure.

TephabondTM Bitumen Anti-stripping agent is a type of cationic surfactant which acts as a bridge between the bitumen and aggregate surface to resist the displacement effect of water. T-Pave International offers both passive anti-stripping agent for hot mix and active anti-stripping agent for soft binder.

TephamineTM Bitumen Emulsifier


TephamineTM E85
Emulsifier for Cationic Slow Setting Bitumen Emulsions

Application

TephamineTM E85 Emulsifier for cationic slow-set bitumen emulsions such as prime coat, dense grade cold mix and cold recycling, grave emulsion mixes. It is also can be adopted for slurry seal and application when adequate mix time is required for those most difficult aggregate in the high temperature. TephamineTM E85 Emulsifier can provide long workability for the cold recycling application when certain period of stockpile is required.

TephamineTM E85 is slightly dispersible in water. Emulsifier solutions can be prepared by addition of hydrochloric acid to the dispersed emulsifier. TephamineTM E85 also acts as breaking retarder when extra mix time is required.

Dosage

Type of Emulsion

% w/w

PH water phase

 

Cationic Slow Setting

1.0-2.0

2.0-5.0

TephamineTM C103
Emulsifier for Cationic Slow Setting Bitumen Emulsions

Application

TephamineTM C103 Emulsifier for cationic slow-set bitumen emulsions for spray seal applications such as prime coat and tack coat. TephamineTM C103 can also be used together with other emulsifiers, such as TephamineTM C408, to enhance mixing stability when used in medium setting emulsions or coarse aggregate mixes or for penetration macadam.
TephamineTM C103 is slightly dispersible in water. TephamineTM C103 need not be neutralized if used alone, but if a lower pH is required it is recommended to use hydrochloric acid. Emulsifier solutions can be prepared by addition of hydrochloric acid to the dispersed emulsifier.

Dosage

Type of Emulsion

% w/w

PH water phase

 

Cationic Slow Setting

1.0-1.5

2.0-3.5

TephamineTM C471
Emulsifier for Cationic Quick Setting Bitumen Emulsions

Application

TephamineTM C471 Emulsifier for cationic quick-set bitumen emulsions for slurry seal and Microsurfacing applications. It is particularly advantageous in the production of slurry seal and Microsurfacing emulsions. The product is especially suitable for reactive aggregate when enough mix time is required.
TephamineTM C471 is slightly dispersible in water. Emulsifier solutions can be prepared by addition of hydrochloric acid to the dispersed emulsifier.

Dosage

Type of Emulsion

% w/w

PH water phase

 

Cationic Slow Setting
Slurry Seal

1.0-1.5
1.2-2.5

2.0-3.5
1.5-3.5

TephamineTM C408
Emulsifier for Cationic Medium Setting Bitumen Emulsions

Application

TephamineTM C408 Emulsifier for cationic medium-set bitumen emulsions. Cold Mixes based on emulsions containing TephamineTM C408 show good water resistance.
TephamineTM C408 gives a low viscosity emulsion even with bitumen that tends to build high viscosity emulsions. For the best performance of TephamineTM C408 it is recommended that calcium chloride is included in the emulsion formulation at a level of 0.05-0.15%.
TephamineTM C408 is dissolved in water by neutralization with hydrochloric acid. A suitable way to manufacture water-phase solutions is to first fill a container with the desired amount of water, heated to 60-70ºC. Add hydrochloric acid corresponding to approx. 50% of the experience dosage (from last production), then add the TephamineTM C408 slowly under stirring to give a uniform dispersion. Add the rest of the acid to give the desired PH.

Dosage

Type of Emulsion

% w/w

PH water phase

 

Cationic Slow Setting

0.6-1.0

2.0-2.5

TephamineTM EM22
Emulsifier for Cationic Rapid and Medium Setting Bitumen Emulsions

Application

TephamineTM EM22 is a liquid emulsifier for rapid and medium setting cationic emulsions. It offers the advantages of good liquidity, economic use level and excellent emulsion quality.
For the best performance of TephamineTM EM22 it is strongly recommended that calcium chloride is included in the emulsion recipe at a level of 0.1-0.2%. Hydrochloric acid may be used to adjust the pH of the water phase.

Dosage

Type of Emulsion

% w/w

PH water phase

 

Cationic Rapid Setting
Cationic Medium Setting

0.12-0.25
0.3-0.5

2.0-3.5
2.0-3.5

 

TephamineTM A05
Emulsifier for Anionic Bitumen Emulsions

Application

TephamineTM A05 Emulsifier for anionic bitumen emulsions for spray seal applications such as prime coat and tack coat and dust control. It is also widely adopted for waterproofing application. TephamineTM A05 offers the advantages of excellent emulsion quality with economy dosage level (when produce anionic rapid setting emulsion). TephamineTM A05 are reactive with Ca+ and Mg+ and it is recommended to avoid use water with high Ca+ and Mg+ content to prepare the water phase.

TephamineTM A05 is slightly dispersible in water. Emulsifier solutions can be prepared by addition of Sodium hydroxide to the dispersed emulsifier.

Dosage

Type of Emulsion

% w/w

PH water phase

 

Anionic Rapid Setting
Anionic Slow Setting

0.3-0.5
0.8-1.2

10.0-12.0
10.0-12.0

TephamineTM E6
Emulsifier for Cationic & Anionic Slow Setting Bitumen Emulsions

Application

TephamineTM E6 Bitumen emulsifier is designed for producing both cationic and anionic slow-set bitumen emulsions with amphoteric type of surfactant. It has good water solubility with easy handling. Emulsion produced with TephamineTM E6 are suitable for applications such as prime coat, dense grade cold mix and cold recycling, grave emulsion mixes. It is also can be adopted for slurry seal and application when adequate mix time is required for those most difficult aggregate in the high temperature.

TephamineTM E6 also acts as breaking retarder when extra mix time is required.

Dosage

Type of Emulsion

% w/w

PH water phase

 

Cationic Slow Setting
Anionic Slow Setting

1.0-1.5
1.5-2.0

2.0-3.5
around 12

       
TephamineTM E1816
Emulsifier for Cationic & Anionic Slow Setting Bitumen Emulsions

Application TephamineTM E1816 Bitumen emulsifier is always utilized as co-emulsifier with other bitumen emulsifier to produce both cationic and anionic slow-set bitumen emulsions. As a primary alkyl amine, it is also can be used as chemical intermedia in the manufacture of nitrogen-derivative type of bitumen emulsifier.

Dosage

Type of Emulsion

% w/w

PH water phase

 

Cationic Slow Setting

1.0-1.5

2.0-3.5

 

Tephabond® Bitumen Anti-stripping Agent

Tephabond® AP-1
Bitumen Anti-stripping Agent for Bituminous Binder

Application

Tephabond® AP-1 is a liquid additive, specially designed for hot-mixed
Bitumen applications where good heat stability is required.
Tephabond® AP-1 may be stored in hot bitumen for up to 5 days at temperatures up to 170ºC without significant loss of activity.

Dosage The dosage of Tephabond® AP-1 depends on the type of bitumen and aggregate used. Normally between 0.2 and 0.5% is added to the binder.
   
Tephabond® AP-7
Bitumen Anti-stripping Agent for Bituminous Binder
   

Application

Tephabond®AP-7 is a multipurpose adhesion agent for use in bitumen, road oils and cut-back binders with the advantages of good heat stability, liquidity and low volatility. The stability of Tephabond® AP-7 in hot bitumen depends however on the acid value and the temperature of the bitumen.

Dosage

The dosage of Tephabond® AP-7 depends on the type of bitumen and aggregate used.
For hot mix application, between 0.2- 0.5% is added to the binder;
For Soft binder, between 0.5%-1.0% is added to the binder.

Note: Above values are averages and subject to minor variations.


Tephamine and Tephabond Products Drum Pic

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