Precision of modal analysis to characterise the complex modulus of asphalt concrete

• Modal analysis is an economic and efficient test method to characterise the complex modulus of asphalt concrete. In this paper, the precision of modal analysis was evaluated by performing testing at several laboratories on two cylindrical asphalt concrete specimens. In addition, the complex moduli characterised by modal analysis were compared to cyclic tension-compression testing. The results showed that the coefficient of variation was less than 3% at loading frequencies above 10 Hz for the complex modulus determined through modal analysis. The comparison of the complex modulus determined from modal analysis and tension-compression testing resulted in a coefficient of variation values not more than 9% for loading frequencies ranging from 0.1 to 10 9 Hz.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Civil Engineering -- Infrastructure Engineering (hsv//eng)

Keyword

Pavement design

Bituminous mixture

Precision

Characteristics

Load

Frequency

Tension

Compression

32 Road: Pavement design

32 Road: Pavement design

51 Road: Bituminous materials and binders

51 Road: Bituminous materials and binders

Publication and Content Type

ref (subject category)

art (subject category)