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Languages : en
Pages : 117
Book Description
This Thesis presents an investigation of the subsurface drainage features of the test pavement at the United States (U.S.) Route 50 joint sealant experiment near Athens, Ohio. The pavement incorporates a 4-in. thick open-graded base, whose design is assessed using the software DRIP 2.0, distributed by the Federal Highway Administration. It is found that the specified base thickness and permeability combination do not meet federal guidelines, evidently because no design calculations had been performed prior to construction. A field inspection of the test pavement drainage features revealed that these had received very scant to no maintenance. Drainage outlets were unmarked, overgrown by vegetation, difficult to find or sometimes missing, often clogged and occasionally damaged. A literature review indicated that such problems are endemic in many states and point to an under appreciation of proper drainage in concrete pavements. A review of the structural performance of the test pavement found no obvious correlation with the condition of a variety of sealant treatments applied during the experiment.