The use of cement treated base courses below asphalt layers is not very common due to the danger of reflective cracking especially with thin asphalt layers. In a theoretical investigation by a finite element model the differences in bearing behaviour of an asphalt pavement without and with notches (cracks) in the cement treated base course are shown. The effects of different asphalt layer thicknesses, of the adhesion between asphalt and cement treated base course, of notch (crack) spacing and of different young's modulus for both layers are explored and recommendations for practice are given.
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The use of cement treated base courses below asphalt layers is not very common due to the danger of reflective cracking especially with thin asphalt layers. In a theoretical investigation by a finite element model the differences in bearing behaviour of an asphalt pavement without and with notches (cracks) in the cement treated base course are shown. The effects of different asphalt layer thicknesses, of the adhesion between asphalt and cement treated base course, of notch (crack) spacing and of...
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