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Heat stable Adhesion Promoter for Hot mix asphalt DAD-KT


Thermally stable adhesion agent based on polyphosphoric acid ethers. Applied in road construction for improvement of adhesion of oil bitumen to aggregates consisting of both acid and basic rocks, keeps enhanced adhesion properties of hot oil bitumens for 7 to 10 days.

Liquid of light-yellow to light-brown colour, recommended for manual or automated adding to bitumen binder at an asphalt plant.

Concentration of injection:0.1–0.5% of bitumen weight.
Average efficient dosage of the preparation:0.25% of bitumen weight.
The amount of preparation is selected based on preliminary laboratory testing for a specific composition of an asphalt mix.

Main Advantages

Lowered Concentration of Injection
Minimum concentration of injection of DAD-KT agent is just 0.1% of bitumen weight. Such low consumption of the agent allows to save transport costs and the storage space.
Interacts with Polymers Contained in PMB
Designed for modification of bitumen in bitumen plants, oil refineries, bitumen storage facilities, as well as for increasing of adhesion of polymer-modified binders (PMB), promotes dissolving of SBS-type polymers in bitumen.
No Strong Odour
DAD-KT has no ammonia odour common for amine adhesion agents.
Thermal Stability for up to 10 Days
As a result of chemical interaction of DAD-KT agent with components of hot bitumen, modifying properties increase and then stabilise and remain for several days, which allows to easily transport modified bitumen at long distances and simplifies approach to arrangement of work process with such binder
Adaptability and Ease of Application
The agent is adapted for manual and automated injection by means of dosing equipment.

Package and Storage

The preparation is supplied in 216l plastic barrels or 1m³ polymer containers.

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-KT 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-KT in specified amount
  3. Stirring until homogeneous mix is obtained

Technical documentation


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