Abstract
This research paper proposes a testing method to determine cyclic plastic deformation characteristics of unsaturated recycled crusher-run material, and accordingly examines the effect of moisture content under single-point loading and moving-wheel loading. In Japan, natural crusher-run material is employed in pavements for base course layer. Nowadays, in order to economize the cost of pavements, recycled crusher-run material made from construction waste is also used as base course material for low volume roads. A series of laboratory element test using multi-ring shear apparatus were carried out on recycled crusher-run material under different degrees of saturation. The experimental results show that moisture content has obvious effect on cyclic plastic deformation of recycled crusher-run material. It is also explained that cyclic plastic deformation significantly increases under moving-wheel loading tests. Moreover, cyclic plastic deformation of recycled crusher-run material increases to some extent when compared with natural crusher-run material under same experimental conditions.
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