Juniper Publishers| Civil Engineering Journal


Study of Surface Drainage Runoff and Vertical
Drainage of Flexible Pavement under Laboratory Wheel Track Test




Authored by Aqeel Al Adili

Proper drainage is a very important consideration in the highway design. Inadequate drainage facilities can lead to premature deterioration of the pavement and the development of adverse safety conditions such as cracks and rut. It is common, therefore, for a sizable portion of high-way construction budgets to be devoted to drainage facilities. In essence, the general function of a highway drainage system is to remove rain-water from the road and the highway right-of-way. This paper presents a study of the vertical drainage properties and the deterioration trends in water seeping of the pavement by testing the laboratory pavement section models with 2% slope which is very important in the selection of a suitable pavement surface layer and the base of the pavement. It has been concluded that by increasing number of days, when the pavement being saturated, the more amount of the water will runoff and the time of ending runoff increased by 63% after 71 days of study. The rut depth appeared after 960 of wheel repetitions and recorded a 97% of rut depth increase after 93 days of load repetitions under different rain intensities with two different durations of time.

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