Reducing start and stop time without destroying the pavement surface is important in enhancing productivity of double-drum roller and compact quality of asphalt pavement, but it is difficult in confirming the maximum brake deceleration or start acceleration of double-drum roller. Dynamic analysis is used in studying these questions, and a mathematic model of double-drum roller is established, b...

Most procedures currently used for the structural and geometric design of pavements fail to treat adequately the effects of mixed traffic on pavement life. The effects of the magpitude$ the configuration, and the number of repetitions of various wheel loads should be included as variables in any good pavement design procedure. An analysis of the axle loads observed on Texas highways is used wit...

In the Mechanistic–Empirical Pavement Design Guide (MEPDG), dynamic modulus of asphalt mixes is used as one of the input parameters in pavement analysis and design. For in-service pavements, MEPDG method uses a combination of some field and laboratory tests for structural evaluation of asphalt layers in rehabilitation projects. In this study, ten new and rehabilitated in-service asphalt pavemen...

Government agencies and consulting companies in charge of pavement management face the challenge of maintaining pavements in serviceable conditions throughout their life from the functional and structural standpoints. For this, the assessment and prediction of the pavement conditions are crucial. This study proposes a neuro-fuzzy model to predict the performance of flexible pavements using the ...

The primary objective of this study is to develop a simplified Hot Mix Asphalt (HMA) dynamic modulus (|E*|) prediction model with fewer input variables compared to the existing regression based models without compromising prediction accuracy. ANN-based prediction models were developed using the latest comprehensive |E*| database that is available to the researchers containing 7,400 data points ...

One of the most difficult tasks in pavement management information systems is establishing the links between performance measures of a structure and the design and construction inputs. During the last two decades Wisconsin Department of Transportation has made significant steps in improving material properties, design practices, and monitoring of pavement performance. The databases that are ava...

This paper focuses on comprehensive sensitivity analyses of various rigid pavement scenarios. Jointed Plain Concrete Pavement ( JPCP) sections designed for three traffic levels in each of five climate zones are evaluated in the sensitivity analyses. One-at-a-time (OAT) local sensitivity analysis was implemented using a design limit normalized sensitivity index (NSI) to provide both quantitative...

Long term monitoring of pavement requires a cost effective and sustainable power supply strategy. We developed an energy harvest system that can be installed in the pavement structure. The system can harvest energy from the temperature difference between the pavement surface and the subgrade soil using thermoelectric modules. In this paper, through computer-aided simulations, we come up with an...

The resilient modulus (MR) of unbound materials is a required input in most of the mechanistic-based pavement analysis and design process and has a significant effect on the projected pavement performance in the mechanistic– empirical pavement design guide programme or AASHTOWare DARwin. The Iowa Department of Transportation (DOT) recently acquired a servo-hydraulic dynamic loading materials te...

The occurrence of a wet-pavement crash is actually a complex system, and to a large degree nonlinear, as the behavior of drivers and the interaction between roadway and vehicle characteristics tend to be nonlinear. As a result, prediction of wet-pavement crashes is difficult to model mathematically. Fuzzy logic models, however, can model nonlinear functions of enormous complexity, and can be bu...