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1 Foundations of Civil and Environmental Engineering

1 2008

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Energy absorption in large dimension asphalt pavement samples reinforced with geosynthetics

Grabowski W., Pożarycki A.

Foundations of Civil and Environmental Engineering

2008

No. 11

17-28

This paper investigates the test results of fatigue crack propagation of large dimension asphalt pavement samples reinforced with geocomposite and geogrid. The large dimension samples were cut from the test section of the asphalt pavement structure. Laboratory scale testing has been carried out in terms of multiple repeated loading and constant temperature. An original method of making large dimension asphalt pavement samples has been described. Crack propagation tests have been carried out on a special unit for fatigue testing. The evaluation of fatigue crack propagation was based on the analysis of the reinforcement efficiency index expressed by a function of the load cycles number and energy absorbed in the volume of the tested samples. Considering that the higher reinforcement efficiency index is desirable for better resistance to fatigue crack propagation, the test results give some indications on better fatigue crack resistance behavior for a sample reinforced with geocomposite in relation to a sample reinforced with geogrid.