The paper proposes a technical solution for an apparatus used to evaluate the impact of mesh reinforcement on road pavement layers, which can be used as a device extending the measurement capabilities of a typical testing machine.
This device allows for static, dynamic, and fatigue testing. The basic idea of its operation is to place a layered sample made of mineral-asphalt mixtures on an elastic pad and load it in a direction perpendicular to its plane, which generates a complex state of stress and significant shear in the sample.
The elastic pad made of rigid polyurethane material is intended to simulate the interaction from the remaining layers of the road pavement. Both the elastic pad and the tested material sample are located in a housing that prevents deformation in directions perpendicular to the load. This paper presents only the results of example fatigue tests.
PROPOSITION OF THE TEST FOR EVALUATION OF MESH REINFORCEMENT IN MULTILAYER ROAD PAVEMENT
The paper proposes a device which can be used to assess the influence of reinforcement grids inserted in pavement layers for overall structure behavior. Proposed device can be installed as a device that extend the capabilities of a typical material testing machine for the static, dynamic and fatigue tests. The basic idea is to put a layered sample made of asphalt mixes on the elastic pad and load it in the direction perpendicular to its plane. The elastic pad is simulating the mechanical answer of the other layers of road surface. Elastic pad and a material sample are in the mold, which prevents deformation in directions perpendicular to the load. In this paper only results of example fatigue tests are presented.
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Source: Logistyka Magazine