Description & Benefits
Highway 1 is a supplier of all specialty bitumen emulsion products here in New Zealand and into the Pacific Islands.
Background Information about Bitumen Emulsions
Bitumen emulsions are created when bitumen and water are mixed together with the aid of an emulsifier. Bitumen can only be used to create roading products when it is heated to around 160C. This creates potential hazards such as burns and fumes. Bitumen Emulsions eliminate these risks but they do come with their own hazards. In New Zealand with our weather patterns if emulsions are not managed well and made to specification we can have other disastrous environmental problems. For example should it rain shortly after bitumen emulsion has been sprayed onto the road and it hasn’t set yet the emulsion can run off the road and down the waste water system and generally into lakes and the ocean. Not only is it a environmental hazard it has also ruined the road which will need to be relayed on the dry day.
Emulsions which are made with negatively charged emulsifiers are called anionic emulsions while emulsions made with positively charged emulsifiers are called cationic emulsions. Highway 1 supplies both of these.
The Cationic Products are used for road sealing applications (chipseal) while the anionic emulsions are used for fixing cracks, sealing asphalt and waterproofing products.