Development and field evaluation of energy-based criteria for top-down cracking performance of hot mix asphalt
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The development and field evaluation of energy-based criteria for top-down cracking performance of hot mix asphalt was discussed. A detailed analysis and evaluation of 22 field test sections resulted in the development and verification of energy-based criteria for top down cracking of hot mix asphalt. The energy ratio accounted for the effects of pavement structural characteristics on top-down cracking performance. Two energy based criteria were recommended to control top-down cracking of hot mix asphalt: a minimum dissipated creep strain energy threshold and a minimum energy ratio for mixtures with a dissipated creep strain energy threshold greater than the minimum.