Asphalt Mixture Specification and Testing
Monday 10 April

South East Branch Event Details

Date Monday 10 April
Title AGM followed by Asphalt Mixture Specification and Testing
Speaker Dr. Cliff Nicholls
Venue The Counting House
Location 50 Cornhill, London
Postcode EC3V 3PD
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Time AGM at 18:00, Presentation at 18:30
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More details Cliff Nicholls has been the convenor of the European
task group for asphalt test methods for fifteen
years. During that time, he has developed an
understanding of what can be asked of asphalt and
the limitations of the available test methods.

Since his retirement from TRL Limited at the end of
2015, he has put his ideas into a book that is due to
be published on the day of the presentation

The presentation will cover the specification level of
test methods (fundamental, simulative, surrogate
and recipe; on the asphalt or on its components) for
the range of properties that can be specified
(composition, volumetrics, temperature, profile, skid
resistance, noise and spray reduction, colour,
deformation resistance, resistance to cracking,
resistance to aggregate loss, stiffness, resistance to
fatigue, moisture damage, resistance to chemicals,
(im)permeability, ageing potential and inter-layer
bond not forgetting the sustainability aspects of
durability, recycling, secondary aggregates carbon
emissions and lower temperature asphalt). However,
the ability to specify all such properties needs to be
tempered with the realisation that the highest levels
of some of these properties are mutually exclusive
and that every property added to the list of
requirements reduces the number of mixtures that
can meet them all and, possibly more importantly,
increases the cost of the asphalt.
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