Title: BEHAVIOUR OF ROAD MATERIALS UNDER FULL SCALE TEST CONDITIONS
Abstract: This short paper describes the 32 m diameter pavement fatigue test track at the Federal Polytechnic in Zurich which is used to study pavement behaviour. Using this equipment, pavements can be subjected to 10-12 tonne axle loads at running speeds of up to 80 km/hour. The third series of tests carried out using this facility are described briefly. The test pavements were constructed of untreated sub-bases which consisted of either crushed aggregate or rounded aggregate. Each type also contained bituminous mixture layers of different thicknesses. Two different types of repairs were also carried out by treating the surfaces with a further bituminous layer. A graph is provided of the Present Serviceability Indices against number of passes for each pavement type. The results show that: a) a 300mm thickness of crushed aggregate is equivalent to a 400mm thickness of rounded aggregate; b) pavements with a double thickness bituminous mixture had a much longer life; and c) that surface treatment repairs were effective. The French title for this article is: Le comportement des materiaux dans les essais en vraie grandeur. For the covering abstract of the conference see IRRD 856400.
Publication Year: 1990
Publication Date: 1990-01-01
Language: en
Type: article
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