This research explored the variation in the bond-breaking effect with a variety of bond-breaking layers installed between concrete pavement surface slabs and lean concrete base to determine the parameters for the structural analysis of pavements with bond-breaking layers and to optimize the selection of such layers for practical road engineering projects. This study tested the bond stresses and frictional forces at the slab-base interface of pavements under different bond-breaking conditions, Moreover, the dynamic stresses at the bottom of the pavement surface slabs atop different bond-breaking layers were tested via indoor straight pavement fatigue tests and field tests to determine the mechanical properties of slab-base interface treated with different bond-breaking layers in a number of highway projects in Hunan and Guangdong provinces. The bond-breaking media applied in this research includes a 3 cm asphalt concrete (AC), 1 cm emulsified asphalt slurry seal (EASS), geotextile, and emulsion wax curing agent (EWCA). The findings from the field tests for the bond stress between slab-base layers indicated that EASS and EWCA outperformed geotextile in terms of reducing friction or bond stress at the slab-base interface. Furthermore, the findings from the indoor straight pavement fatigue tests indicate that AC exhibited improved performance over EASS and EWCA with no bond-breaking layer in terms of alleviating stress. The mechanical properties of slab-base interface with different bond-breaking media derived from this research provide a scientific reference for pavement design and construction control in practical road engineering projects.
Experimental Study on the Mechanical Performance of the Interface between Concrete Pavement and Lean Concrete Base Treated with Different Bond-breaking Layers
2013-02-15
82013-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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