Deformation and strength of fine-grained asphalt concrete were investigated under static and step loadings experimentally in the paper. Temperature varied within the range of 20 ± 2°C. The stress varied within the range of 0.055 MPa and 0.311 MPa during creep test. The results of experiments showed that creep curves have three sites within specified ranges of stress—site of unstabilized creep, site of stabilized creep and site of accelerating creep. The long-term strength curve is described successfully by exponential function. The stress affects greatly the long-term strength of asphalt concrete: the increase of stress for single order reduces failure time for four orders. The sequence of impacts also affects greatly the long-term strength of asphalt concrete.
Deformation and strength of asphalt concrete under static and step loadings
Rossi, C. Oliviero
2017-01-01
Abstract
Deformation and strength of fine-grained asphalt concrete were investigated under static and step loadings experimentally in the paper. Temperature varied within the range of 20 ± 2°C. The stress varied within the range of 0.055 MPa and 0.311 MPa during creep test. The results of experiments showed that creep curves have three sites within specified ranges of stress—site of unstabilized creep, site of stabilized creep and site of accelerating creep. The long-term strength curve is described successfully by exponential function. The stress affects greatly the long-term strength of asphalt concrete: the increase of stress for single order reduces failure time for four orders. The sequence of impacts also affects greatly the long-term strength of asphalt concrete.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
