®
PROACTIVE
Additives for Bitumen Emulsions
The exclusive chemical formulation makes it possible to obtain high-viscosity bituminous emulsions with excellent storage stability, even at very low dosages, ensuring high performance with minimal quantities of product.
Additives |
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PROACTIVE®A-220 |
PROACTIVE®Q-2830 |
PROACTIVE®B-140 |
PROACTIVE®B-TLS |
FLUXOIL D |
Classification
Cationic | Anionic |
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Breacking Behaviors
Rapid Setting | Medium Setting | Slow Setting | Over Stabilized |
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Advantages & Benefits
Easy to use, as they are liquid and low in viscosity.
Low dosage requirements.
Easily dispersible in water.
Promote the production of emulsions with good stability, low sedimentation tendency, high viscosity, and excellent adhesion to aggregates.
Application
Emulsifier for cationic rapid and medium setting bitumen emulsions.
For bitumen emulsions used for Tack-Coat, Chip Seal, Cold Mix Asphalt.
Dosage
0,2÷0,6% on emulsion
weight (w/w)
A bituminous emulsion consists of the dispersion of small bitumen particles (dispersed phase) in water (continuous phase). These two elements will form an emulsion if vigorously mixed, but they separate immediately once mixing stops. To obtain a stable emulsion and to prevent or delay the separation of the two phases, the presence of an “emulsifying” additive is required.
ACTIVA produces various types of emulsifying additives under the trade name PROACTIVE. The role of emulsifiers is to:
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Reduce the surface tension at the bitumen/water interface.
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Facilitate the dispersion of bitumen in water, promoting the formation of small bitumen particles.
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Prevent the bitumen particles from coalescing by creating an electromagnetic field around each individual bitumen particle.
The choice of PROACTIVE to be used depends on the type of emulsion to be produced. Bituminous emulsions are usually classified according to the surface electrical charge of the dispersed bitumen particles into:
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cationic emulsions (positive charge)
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anionic emulsions (negative charge).
In order to be used, bituminous emulsions must transform into a continuous bitumen film (releasing the contained water). The rate of this process, called the “setting” of the emulsion, further classifies emulsions into:
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rapid-setting
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medium-setting
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slow-setting
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over-stabilized
