Date | Thursday 7 October 2021 |
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Title | Developments in Warm Mix Asphalt |
Speaker | Dr Ruth Mitchell And Alan Kavanagh |
Joint Meeting with | CIHT |
Venue | Corrs Corner Hotel |
Location | 315 Ballyclare Road, Newtownabbey |
Postcode | BT36 4TQ |
Map | Map (opens in new window) |
Time | 6.00 pm |
Register to Attend | Members Log In to Register |
More details | With UK's National Highways recently announcing an increase in the use of Warm Mix Asphalt, Ruth and Alan will present on the technology of WMA and its practical application in NI and Ireland. Warm Mix Asphalt is typically mixed and laid at least 20 degrees C lower than conventional Hot Mix Asphalt, reducing fuel consumption and fume emissions during manufacture and laying. Ruth's research focused on laboratory study of four WMA proprietary additives i.e. CWM, Advera, Rediset LQ and a long chain hydrocarbon wax. This presentation focuses on the laboratory testing undertaken included Compactibility, ITSM Stiffness, Dragged Ravelling Test and Binder Drainage as well as the selection process focusing on the climatic conditions of Northern Ireland. To reduce the carbon footprint of the pavement construction/maintenance industry, switching to warm-mix asphalt instead of hot-mix asphalt, is probably the easiest transition. By adding an additive into the bitumen, mixing temperatures at the mixing plant can be reduced greatly. Warm-mix asphalt has been used in every bituminous layer of the pavement from base to surface course, including mixes that contain high percentages of RAP, and under all traffic levels. In his presentation to on warm-mix asphalt, Alan Kavanagh, Technical Manager of the Colas Ireland Group will discuss the following: • Warm-mix asphalt – the various technologies used; • The drivers for its use; • The technical benefits of warm-mix asphalt; • The environmental benefits; and • A description of a case-study in Dublin. |