This is a joint IAT / CIHT Technical Meeting, which will be taking place live at Corrs Corner Hotel and it will focus on developments in Warm Mix Asphalt. With UK's National Highways recently announcing an increase in the use of Warm Mix Asphalt, there will be presentations on the technology of WMA and its practical application in NI and Ireland.
With UK's National Highways recently announcing an increase in the use of Warm Mix Asphalt, Dr. Ruth Mitchell and Alan Kavanagh 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 on warm-mix asphalt, Alan 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.
Venue - Corrs Corner Hotel, 315 Ballyclare Road, Newtownabbey, BT36 4TQ
Start time - 17:30 for 18:00 (Tea & sandwiches from 5.30 pm)
Map - Map (opens in new window)
Attendees will be required to wear a mask on arrival but can remove when seated in the room. The room normally holds 100 but there will be social distancing in place (spacing 1m apart) so it can accommodate 60 attendees.
If restrictions change for any reason before 7 October, the event may be changed to an online event and attendees notified accordingly.
This is open to any CIHT members interested in the technology of WMA and its practical application. Please note: Limits on attendees mean this is a first come first serve event, so please do book your place as soon as you can.
Dr. Ruth Mitchell, Albert Fry Associates
Alan Kavanagh, Technical Manager of the Colas Ireland Group