3/18/2023 0 Comments Tf structural concrete overlayThe rebound deflection data is employed to indicate the present performance as well as the durability of the road structure.įig2. The higher rebound deflection values indicate good performance of the pavement and such pavements are more durable and can withstand comparatively heavy loads. and it is used for measuring the deflection of flexible pavement under the action of the moving loads. The Benkelman Beam device is used for the structural evaluation of flexible pavements. Useful for You: Fa ilures in rigid pavements|Repair and Maintenance of Cement Concrete Road The structural capacity of the pavement is assessed by the load carried at a specified deflection of the plate or by the amount of deflection at a specified load on the plate. The plate bearing test may be used for the structural evaluation of both flexible and rigid pavements. (3) Structural deterioration: This condition indicates that the structure of pavement has deteriorated to such an extent that its load-carrying ability is seriously affected. It can be measured by means of skid trailers. (2) Slipperiness: This condition indicates that the surface no longer provides adequate resistance to skidding. It can be measured by roughness measuring devices such as roughometer or unevenness integrators. (1) Poor riding quality: This condition indicates that the riding comfort has deteriorated below an acceptable standard. What are the reason for pavement evaluation?įollowing are the four reasons for deciding that a road requires to be maintained:
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