Uniaxial cyclic compression test with confinement - method

/ Uniaxial cyclic compression test with confinement - method A 

Specimens are tested not before 2 days after compaction and all specimens are stored at a temperature between 5°C and 25°C. The minimum number of specimens for each bituminous mixture tested is five. 

The typical test temperature is 40°C, and before testing, the specimens are left in a chamber for at least 4 h (up to 7 h maximum) to be stabilised at the test temperature. 

the specimens are positioned well centred coaxially with the test axis between the two platens. A constant pre-load of (72 7) x 10 IcN is applied for 10 min, after which the test load of 100 kPa is applied for 3600 load applications. The loading time is 1 s and the rest time is also 1 s hence, the duration of the test is 2 h. 

During the test, regular measurements of the total permanent deformation are made. As a minimum requirement, readings are taken after the following loading applications 2, 4, 6, 8, 10, 20, 40, 60, 80, 100, 200, 300, 400,. .., 3600. 

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According to EN test methods, the total number of pulses applied is 3600 (approximately 2 h), for the uniaxial cyclic compression test with confinement, or 10,000 pulses (approximately 6 h), for the triaxial cyclic compression test (vacuum induced). 

Test method A determines the creep characteristics of bituminous mixtures by means of a uniaxial cyclic compression test with some confinement present. To achieve a certain... 

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