Evaluation of the different type of road surface texture properties

Highway pavements are divided into two main categories; flexible and rigid. Samples, which are applied to the test, for the rigid pavements are prepared by different roughening methods, for the flexible pavements are prepared by using different gradations. Security criteria is the most important feature for the road. Microtexture and macrotexture properties must be investigated for determining the surface texture properties and security criteria. To investigate these properties, sand patch method, dynamic friction tester and laser scanning method are applied to the samples. The result of these applied experiments, ?Mean Profile Depth?, ?Mean Texture Depth? and ?Coefficient of Friction? are existed and texture properties are interpreted.Scope of this study, at the second chapter; properties of flexible and rigid pavements, properties of materials which are used at construction and types of flexible and rigid pavements are explained.At the third chapter, deformations which are occurred on the rigid and flexible pavements are explained and the causes of these deformations are investigated.At the fourth chapter, friction which is the main theme of this experimental study is explained. Also, surface texture properties of pavements and roughening methods are investigated.At the fifth chapter, properties of materials which are used at production of flexible and rigid samples for experiments and equipments which are used at producing experimental samples are defined. Also, sand patch method, dynamic friction tester and laser scanning which are used for determining the surface texture properties are explained and the results of experiments are determined.At the sixth chapter, results of experiments are investigated and interpreted.