Fatigue damage analysis in asphalt concrete mixtures using the dissipated energy approach

Canadian Journal of Civil Engineering - Tập 33 Số 7 - Trang 890-901 - 2006
Khalid A. Ghuzlan, S H Carpenter

Tóm tắt

An asphalt concrete damage–energy fatigue approach based on the concept of change in dissipated energy is presented in this paper. The damage–energy based fatigue approach is simple and based on a sound theoretical background. The central concept of the energy approach is the energy fatigue curve, which is based on two key elements, namely the plateau value (PV) and the number of load cycles to true failure (Ntf). The plateau value represents the constant value of the percentage of dissipated energy that produces damage to the material under cyclic loading. Failure is defined as the number of load cycles at which this percentage of dissipated energy begins to increase rapidly, indicating instability. Flexural fatigue testing was used to test hundreds of asphalt concrete beams, mainly under controlled-strain testing conditions. It was found that PV is highly dependent on the initial loading conditions, stress, strain, and dissipated energy. As a result, it can be used conveniently in pavement design. The number of load cycles to 50% reduction in initial stiffness was found to be highly correlated with the new failure point (Ntf). Using the dissipated energy concepts in fatigue analysis makes it possible to account for damage accumulation in a straightforward manner.Key words: fatigue of asphalt concrete, dissipated energy, damage, energy ratio.

Từ khóa


Tài liệu tham khảo

Epps J.A., 1969, Journal of the Association of Asphalt Paving Technologists, 38, 423

Ghuzlan K.A., 2000, Transportation Research Record 1723, Transportation Research Board, National Research Council (US), Washington, D.C., 141

Heukelom W., 1966, Journal of the Association of Asphalt Paving Technologists, 35, 359

Kim R.Y., 1990, Journal of Engineering Mechanics, 116, 751, 10.1061/(ASCE)0733-9399(1990)116:4(751)

Kim R.Y., 1995, ASCE Journal of Materials in Civil Engineering, 7, 59, 10.1061/(ASCE)0899-1561(1995)7:1(59)

Kim R.Y., 1997, Journal of the Association of Asphalt Paving Technologists, 66, 520

Lee H.J., 1998, Journal of Engineering Mechanics, 124, 32, 10.1061/(ASCE)0733-9399(1998)124:1(32)

Lee H.J., 2000, ASCE Journal of Materials in Civil Engineering, 12, 105, 10.1061/(ASCE)0899-1561(2000)12:2(105)

Majidzadeh K., 1971, Journal of the Association of Asphalt Paving Technologists, 40, 227

Miner M.A., 1945, Transactions of the American Society of Mechanical Engineers, 67, A159, 10.1115/1.4009458

Monismith C.L., 1973, Journal of the Association of Asphalt Paving Technologists, 42, 320

Paris P., 1963, Transactions of the ASME, Journal of Basic Engineering, 85, 528, 10.1115/1.3656900

Pell P.S., 1975, Journal of the Association of Asphalt Paving Technologists, 44, 1

Rowe G.M., 1993, Journal of the Association of Asphalt Paving Technologists, 62, 344

Tayebali A.A., 1992, Journal of the Association of Asphalt Paving Technologists, 61, 333

Tayebali A.A., 1993, Journal of the Association of Asphalt Paving Technologists, 62, 385

Van Dijk W., 1975, Journal of the Association of Asphalt Paving Technologists, 44, 38

Van Dijk W., 1977, Journal of the Association of Asphalt Paving Technologists, 46, 1

Thông tin
Thông tin xuất bản

Canadian Journal of Civil Engineering

Tập 33 Số 7

890-901

Thông tin tác giả