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Adhesion Promoter for Hot and Warm Mix Asphalt — amphoteric type DAD-1


Amhoteric surfactant applied in road construction for enhancement of adhesion of oil asphalt to aggregates made both of acid and basic rocks. There are two types of DAD-1 (A and C) with different commodity form for convenient application in different customer’s technological conditions and with similar chemical effect on bitumen.

DAD-1 Grade «А» – is a homogeneous brown viscous-flow liquid recommended for manual or semi-automatic adding into a bitumen binder in an asphalt plant.
DAD-1 Grade «С» – is a homogeneous brown liquid recommended for automated injection into a bitumen binder in an asphalt plant by means of high-precision dosing equipment.

Concentration of injection: 0,3 – 0,8% of bitumen weight.
Average efficient dosage of the preparation:0,5% of bitumen weight.
The amount of preparation is selected based on preliminary laboratory testing for a specific composition of an asphalt mix.

Main Advantages

Universal (Amphoteric Surfactant)
DAD-1 adhesion agent contains anionic and cationic functional group, which allows to improve bitumen adhesion to not only acid rock, but also basic rock and neutral rock and to use a universal approach to selection of the aggregate required for production of asphalt mixes. This is compares DAD-1 agent favourably with common amine-based agents composed of cationic functional groups only.

DAD-1 adhesion agent is produced of absolutely safe and environmentally friendly raw materials. Most of alternative cationic or acid agents are toxic and less safe for use.
DAD-1 is very cheap, therefore, when it allows to save up to 20–30% of adhesion agents cost even despite the higher concentration of injection.

The agent is available in different viscosity versions adapted for manual and automated addition by dosing equipment. Shipment in small-volume package for convenience of manual loading is possible. Relatively high concentration of injection of the preparation to bitumen allows to define minimal required dosing volume of the product with higher precision.

Package and Storage

The preparation is supplied in metal barrels with volume of 216l or 52l and polymer containers with capacity of 1m3.
The preparation is stored in transport package or in hermetically sealed package. The preparation is stored in closed storage areas at distance of at least two metres from heating elements, at temperature from minus 35°C to 50°C, in open areas under sheds or in special heated tanks.

Guaranteed storage life is 2 years after manufacturing.

Application Technology

DAD-1 may be added both into an operating reservoir at the stage of binder preparation and directly in the bitumen supply line of asphalt plant mixer.
The technology of production of bitumen modified by the agent includes:

  1. Heating of basic bitumen up to operating temperature
  2. Adding of DAD-1 in specified amount
  3. Stirring until homogeneous mix is obtained

Technical documentation


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