Bitumen Emulsions

By finding a way to adjust the particle sizes of the bitumen emulsion droplets, Road Science has created an emulsion that can be sprayed at 80°C (a significant reduction from the normal operational temperature for hot or cutback bitumen of 180oC). It also cures faster, is more weather-resistant and stores for longer.

Bitumen Emulsions

Health and Safety

Emulsions allow the temperature of transported and sprayed bitumen to be below 100°C (typically around 80°C). This keeps people safe throughout every stage of handling the product.

New generation emulsions eliminate the risk of explosion as the need for adhesion and ‘cutback’ agents such as kerosene are no longer required. Roading teams are more comfortable using emulsions as they know they can return home without having to deal with fumes and kerosene clouds that hot cutback bitumen creates.

The benefits of using a Road Science Emulsion over cutback are not only technical, but social and environmental.
An independent study by CarboNZero has revealed new generation emulsions have almost half the carbon footprint of hot or cutback bitumen.

The use of emulsion complies with new Health and Safety legislation. This legislation shifts responsibility to the person purchasing products and services making them more liable than ever before.

Technical benefits of using Road Science Bitumen Emulsions

Road Science bitumen emulsion has a superior thickness to hot or cutback bitumen, giving it a high resistance to flow with less chance of run off and the ability to seal on steep slopes with greater confidence.

The ability to spray emulsions in cooler temperatures allows sealing work to start earlier in the season. In damp conditions emulsions adhere to sealing materials better than hot or cutback bitumen.

Emulsions can be stored for in excess of three weeks which means weather and operational delays are more easily managed.

It is widely understood, accepted and can be demonstrated that emulsion binders provide better adhesion to chip than cutback binders do. This leads to some designers using less binder for emulsion than for the equivalent cutback seal.

An emulsion can be defined as a dispersion of small droplets of one liquid in another, it is the process of combining two liquids that cannot be mixed.  It is, in essence, the same process by which many foods, including tomato sauce, remain suspended and pourable without the elements separating or settling.

Comparing hot or cutback bitumen to bitumen emulsions is like comparing oil based to water based acrylic paints. One is an oil based system and the other a water based system (emulsion). The delivery method to the pavement surface for both products remain the same and over time the final binder on the road returns back to bitumen.

RS1 Chip Seal

Enables for standard chip sealing to start earlier in the season; provides greater safety for workers as well as superior performance.

Download Technical Information Sheet

Download Safety Data Sheet

RS1 Improved Seal

All the benefits of Road Science emulsions as well as tolerance to extreme ambient temperature ranges, provides high durability in hard driving situations.

Download Technical Information Sheet

Download Safety Data Sheet

RS1 Superior Seal

All the benefits of Road Science emulsions, including the added flexibility for creating chipseals with superior performance.

Download Technical Information Sheet

Download Safety Data Sheet

RS1 Tack Coat

A tack coating emulsion for bonding freshly laid asphalt to the underlying pavement, with much lower application temperature, excellent substrate adhesion and better bonding in damp conditions.

Download Technical Information Sheet

Download Safety Data Sheet

RS2 Cold Mix

Suitable for Cold Mix applications.

Download Technical Information Sheet

Download Safety Data Sheet

RS2 Dust Seal

All the benefits of a Polymer Modified Binder in a chipseal. Suitable for dust suppression applications.

Download Technical Information Sheet

Download Safety Data Sheet

WATER CART EMULSION

This Emulsion assists the stability of the material, reduce the risks of cracking, enhances bonding with surfacing layers and increases productivity. 

Download Technical Information Sheet

Download Safety Data Sheet

View all Bitumen Emulsion Technical Information and MSDS sheets


Contact the Road Science team to work along-side you to create or identify the right product for your particular need.


 

The Help Hub

Welcome to the Help Hub, we’re here to answer your questions or get in touch to discuss further.

Phil Muir

Position Operational Support Manager

Phone 027 496 3661

Phillip.Muir@roadscience.co.nzEmail Me

Position Operational Support Manager

Phone 027 496 3661

Phillip.Muir@roadscience.co.nzEmail Me

Where are we?

We have plants and laboratories located all over NZ:

Asphalt

Whangarei
Auckland
Gisborne
Hamilton
New Plymouth
Wellington
Dunedin
Invercargill

Bitumen

Mt Maunganui
New Plymouth
Lyttelton
Bluff

Laboratories

Auckland
Mt Maunganui
Wellington
Christchurch

 

The Help Hub

Welcome to the Help Hub, we’re here to answer your questions or get in touch to discuss further.

Why choose Road Science?

Road Science is New Zealand’s leading designer and supplier of bitumen and bitumen based products, with four accredited testing laboratories, eight asphalt and four bitumen plants.

Customers can have confidence in continuity of supply and on-time deliveries with our world-class manufacturing plants and storage facilities for asphalt, bitumen, emulsions and polymer modified binders.

This is further supported by New Zealand’s largest capacity on-road bitumen tanker fleet.

We also provide a range of pavement design, technical and consultancy services.

Performance  |  Quality  |  Leading Advice