Measuring the levels of runoff and the volume of infiltrated water are the fundamental factors in creating an essential comparison between the elected surface patterns.
#FLEXIBLE PAVEMENT DESIGN AASHTO SIMULATOR#
In this study, a laboratory apparatus has been designed and fabricated as an artificial rainfall simulator to investigate the behavior of different surface concrete block patterns under different rainfall intensities. Therefore, this kind of issue can be treated by adopting a permeable pavement system such as the permeable interlocking concrete pavement (PICP) to manage the runoff of water and tolerate the increasing loads of traffic efficiently. In dense-graded pavements, which are used for composing and recomposing roads in the paving industry around the world, failures occur due to increasing traffic loads and the rising runoff of water caused by storms or floods, or any other reason. Subsequently, with the variables found and using the reliability theory and the serviceability model, the design method and the models of deterioration are evaluated through a supply and demand analysis to obtain the reliability value that reduces the uncertainty of the performance of the structure when operating. For this, a Monte Carlo simulation model is developed, using field data and statistical concepts that allow defining the variables of the model as random variables. This research proposes to link the design method and calibrated deterioration models to local conditions that consider the actual behavior of the materials, the variability of the construction process, the actual load stresses and the weather, when in operation. In addition, the chosen value is deterministic and does not consider the random nature of the process or the actual conditions of load, climate, material behavior and impact of the construction process that affect the performance of the structure when it is in service. The reliability used in the pavement design is assigned according to recommendations of design guides or according to the designer’s criteria that is to say, there is no rational tool for their estimation.