Risk Reduction - Foamed Bitumen Foaming Agent AustStab Awards of Excellence 2014 AustStab Awards of Excellence 2014 Stabilised Pavements of Australia Pty Category 1 – Work Health and Saf Sponsored by
Risk Reduction - Foamed Bitumen Foaming Agent AustStab Awards of Excellence 2014 Stabilised Pavements of Australia Pty Ltd Category 1 – Work Health and
Risk Reduction - Foamed Bitumen Foaming Agent AustStab Awards
of Excellence 2014 Stabilised Pavements of Australia Pty Ltd
Category 1 Work Health and Safety Sponsored by
Slide 2
Foamed Bitumen Stabilisation Foaming agent must be added to
enhance the bitumen foaming properties Current foaming agent is
dangerous good and hazardous substance Hazard Identification SPA
identified that a substantial number of risks could be reduced in
the workplace through substitution of existing foaming agent
Slide 3
Development of Alternate Foaming Agent Identification of
product standards Existing material properties/composition Handling
and application Laboratory trial program Field trial program
Slide 4
Laboratory Results No AdditiveCurrentInterfoam Bitumen
Temperature ( C) 180 Water Added (% of Bitumen) 2.51 2.65 Expansion
Ratio (ratio of maximum foamed volume to original volume) 81014
Half-life (seconds)10.715.760 Standards require a minimum expansion
ratio of 10 and half-life of 20 seconds
Slide 5
RMS Port Macquarie Field Trial Average Results for One Bitumen
Run Using Interfoam Bitumen Temperature ( C) 184 Water Added (% of
Bitumen) 2.6 Expansion Ratio (ratio of maximum foamed volume to
original volume) 11.2 Half-life (seconds)19.6
Slide 6
Product Hazard Comparison Current ProductInterfoam Dangerous
Good Hazardous Good Strong odour inhalation of product will result
in severe headaches and nausea Minor odour has not caused headaches
or nausea from any SPA trials 35 C flashpoint61 C flashpoint less
flammable product Highly aquatic toxicityLower aquatic
toxicity