Colzuphalt®

Name: Colzuphalt®
Brand: COLZUPHALT
SKU: colzuphalt

Surface-active, reactive additive for reducing the application temperature of asphalt mix (low temperature Asphalt)

Want to order or have questions?

Get in touch – we'll help you choose the right products, advise on usage and prepare a quote.

+370 6 858 5782 [email protected]

Description

Colzuphalt® is a surface-active, reactive additive with multiple action for rolled and mastic asphalt. Firstly, it acts as a wetting agent to optimally coat the minerals with binders. This effect significantly reduces the processing temperature of the asphalt by up to 30 °C.

As the asphalt mix is processed, Colzuphalt® develops into a highly effective bonding agent. This permanently improves the bond between the binder and the mineral.

The temperature-reduced asphalt produced with Colzuphalt® offers enormous advantages in terms of occupational safety and environmental protection. This reduces the concentration of vapours and aerosols.

On top of this, energy is saved by lowering the temperature of the asphalt. This likewise leads to a reduction in CO2 emissions. The energy savings lead to an improved overall energy balance, which in turn contributes to climate protection.

The use of Colzuphalt® has been tried and tested for years on many exposed traffic routes. This is also demonstrated by the fact that Colzuphalt® is listed by the Federal Highway Research Institute (BASt) as a proven product for reducing the temperature of rolled asphalt (see “Collection of experiences regarding the use of finished products and additives for reducing the temperature of asphalt”, BASt).

Advantages

Temperature reduction of the mix up to 30 °C possible
Adhesive to enhance the adhesion of the binders to the mineral
Improvement of the processing properties
Very good compaction of the mix at reduced processing temperature
No “displacement” of the mix during the rolling process

Available packaging

900 kg IBC container
182 kg disposable drum
2 kg bag / 13 pieces per pack

Downloads

Technical datasheet

Download PDF file

Technical info

Application instructions

Mode of action

Colzuphalt® is a reactive additive with multiple effects. First, it acts as a wetting agent, i.e. the surfaces of the minerals, especially in the filler area, are coated with the additive in such a way that the surface tensions change in favour of a better coating with the binder (lipophilic). Colzuphalt® then reacts under thermal influence to form a highly effective bonding agent. The adhesion between bitumen and mineral is permanently improved in the asphalt mixture. The minerals thereby acquire hydrophobic and oleophilic properties, which also lead to an increase in cohesion in the asphalt. Both reaction phases simultaneously trigger the temperature reduction with better workability.

Application instructions

Colzuphalt® is a slightly viscous liquid at room temperature, which can be added to the mixer in portions either via a dosing pump or via individual easily meltable plastic bags. The amount to be added is 0.5 to 1.0 % of the binder.
In order to ensure efficient distribution of Colzuphalt® with a constant mixing time, the following mixing sequence has proven successful. If this is technically possible, Colzuphalt® should be added to the bitumen weigher via a dosing pump. If addition via the bitumen weigher is not possible, Colzuphalt® can be added to the asphalt mix during the mixing process. In this case, it may be advisable to extend the usual post-mixing time. It must be ensured that sufficient spreading of the additive in the mix is guaranteed.
When producing mastic asphalt, Colzuphalt® can also be added directly to the boiler in addition to the methods described above. With this method, a sufficient dwell time in the boiler before processing must also be taken into account.

Reaction time and mix storage

Colzuphalt® is a reactive additive that requires a certain dwell time in the hot mix for its various effects. This reaction time depends, among other things, on the temperature of the mix and the mixing process, with higher temperatures accelerating the processes. At a mix temperature between 140 and 150 °C, the usual reaction time of the additive to improve the processing properties is approx. 30 minutes. This already includes the time from passing through the mixer, silo storage, transport to the construction site and processing on site. The Colzuphalt® optimised mix retains its special properties even when stored in the silo for several hours.

Dosing via the filler

Colzuphalt® can be “applied” directly on a filler. The additive is sprayed onto the filler in the appropriate quantity. Colzuphalt® is then dosed at the asphalt mixing plant via the filler.

Dosing equipment

The viscosity of Colzuphalt® is temperature dependent. For effective utilisation of the delivery capacity of dosing pumps, the additive should have a temperature of at least 20 °C. Before use, check the compatibility of Colzuphalt® with other additives that are conveyed via the dosing equipment (pumps, pipes). If necessary, rinse the dosing equipment with mineral or vegetable oils before or after use.

Suitability and control tests

In the case of laboratory mixtures, the mix must also have a storage period of 2 hours at a temperature above 120 °C before testing. The positive influence of Colzuphalt® can be tested on drill cores and pieces removed from the pavement. The improved processing properties of the mix (e.g. better compaction behaviour of rolled asphalt, reduced stirring resistance of mastic asphalt) can only be proven to a lesser extent on reheated mix samples.

Material consumption

The dosage of Colzuphalt® is 0.5 to 1.0 % of the binder.

Cleaning agents

Equipment: BIGUMA®-SWS, petrol or common solvents
Skin contact: hand cleansing paste
Dosing equipment: mineral and vegetable oils

Storage

The product has a useful life of at least 24 months when stored in a cool and dry place.

Technical data

Viscosity at 5 °C	approx. 3000 mPa·s
Viscosity at 10 °C	approx. 1500 mPa·s
Viscosity at 20 °C	approx. 1000 mPa·s
Density (23 °C)	0.9 g/cm³

Products used together

BIGUMA®-SWS

Cold cleaning agent for cleaning and removing bitumen

As the asphalt mix is processed, Colzuphalt® develops into a highly effective bonding agent. This permanently improves the bond between the binder and the mineral.

Temperature reduction of the mix up to 30 °C possible
Adhesive to enhance the adhesion of the binders to the mineral
Improvement of the processing properties
Very good compaction of the mix at reduced processing temperature
No “displacement” of the mix during the rolling process

900 kg IBC container
182 kg disposable drum
2 kg bag / 13 pieces per pack

Technical datasheet

Download PDF file

Application instructions

Mode of action

Application instructions

Reaction time and mix storage

Dosing via the filler

Colzuphalt® can be “applied” directly on a filler. The additive is sprayed onto the filler in the appropriate quantity. Colzuphalt® is then dosed at the asphalt mixing plant via the filler.

Dosing equipment

Suitability and control tests

Material consumption

The dosage of Colzuphalt® is 0.5 to 1.0 % of the binder.

Cleaning agents

Equipment: BIGUMA®-SWS, petrol or common solvents
Skin contact: hand cleansing paste
Dosing equipment: mineral and vegetable oils

Storage

The product has a useful life of at least 24 months when stored in a cool and dry place.

Technical data

Viscosity at 5 °C	approx. 3000 mPa·s
Viscosity at 10 °C	approx. 1500 mPa·s
Viscosity at 20 °C	approx. 1000 mPa·s
Density (23 °C)	0.9 g/cm³

BIGUMA®-SWS

Cold cleaning agent for cleaning and removing bitumen

Want to order or have questions?

Get in touch – we'll help you choose the right products, advise on usage and prepare a quote.

Andrius Knystautas

+370 6 858 5782 [email protected]