The application of in-place recycling techniques has emerged as a practical and effective way to enhance the sustainability agency pavement management decisions for asphalt-surfaced pavements. However, potential environmental benefits resulting from applying have not been fully documented in literature. This paper presents comprehensive life cycle assessment (LCA) model that extends typical LCA's system boundaries include impacts usage phase production energy sources. results LCA specific...

Abstract Continuous deflection devices (CDDs) can safely measure pavement (or other related properties) while traveling at highway speed, which reduces traffic disruption. CDD measurements are contaminated with relatively high noise levels compared to stop‐and‐go such as the Falling Weight Deflectometer. In this article, we use wavelet transform denoising remove and estimate true slope obtained from Traffic Speed Results show that failure denoise lead calculated Effective Structural Number...

Recent studies based on Life Cycle Assessment (LCA) have highlighted the potential of in-place recycling techniques to enhance sustainability agency pavement management decisions for asphalt pavements. However, a solution which an LCA finds environmentally advantageous might not be preferred over another is technically equivalent, if it economically competitive. In this context, necessary evaluate economic costs such alternatives taking into account perspective main stakeholders who interact...

Continuous deflection-measuring devices, or continuous deflectometers, are increasingly being used to support project-level and network-level pavement management decisions. deflectometers nondestructive evaluation devices that measure deflections caused by a moving load. Some can with little no traffic control; this feature makes them more advantageous use than stationary such as the falling weight deflectometer. The current technologies implemented in different types of discussed, most...

This article uses the limits of agreement (LOA) method to compare falling weight deflectometer (FWD) and traffic speed (TSD), two pavement structural evaluation devices. The TSD measures deflection slope, whereas FWD deflection. For this reason, measurements were converted surface curvature index (SCI) base damage (BDI), which can be obtained from each device. SCI BDI between devices was then evaluated. Although relationship calculated using both equipments is reasonably close line equality,...

In response to the two latest transportation funding authorization bills, Moving Ahead for Progress in 21st Century Act and Fixing America’s Surface Transportation Act, rules that require reporting of specific pavement condition measures have been developed encoded into federal regulation. Pavement performance published register International Roughness Index (IRI), percent cracking, rutting (for asphalt-surfaced pavements) faulting jointed concrete pavements). Allowing measurement IRI on...

Pavement performance modelling is an essential part of pavement management. Past research has shown that a structural indicator can be included in models to capture differences between weak and strong pavements. Weak pavements are expected deteriorate more rapidly than pavements, as consistently past research. The work presented this paper uses the Traffic Speed Deflectometer (TSD) calculate multiple indexes compares their ability differentiate poor well performing Historical condition data...

This paper presents a network-level structural capacity indicator for asphalt pavements in the state of Virginia. A literature review revealed that several indexes have been proposed, and number states use measures their decision processes. Some methods are compared this using deflection data collected falling weight deflectometer distress from tests conducted on Virginia interstates. One index is based concept, Structural Capacity Index, found to produce decisions most closely match...

The objective of this study was to show potential applications a network-level structural index developed for evaluation flexible pavements. First, several implementation measures were identified, and then data from the state Virginia used modify proposed examples them. Several validated with deflection testing falling weight deflectometer on Interstate highways in Department Transportation Pavement Management System. results research indicate that including decision process can facilitate...

Agencies that manage pavement networks have a role in mitigating the factors affecting global climate change by managing their such way these are minimized. Although much research is still required to quantify impact of many variables relating pavements, condition on vehicle fuel consumption has been clearly demonstrated several projects. In light extensive shows characteristics as having significant consumption, it can be shown maintaining network pavements minimize roughness limit energy...

In this paper, the difference sequence method is used to decompose traffic speed deflectometer (TSD) deflection slope measurements variability into "true" spatial that due pavement structural changes and noise variability. A robust evaluate standard deviation presented validated using simulated examples. The then calculate of TSD measurements. evaluated also determine optimal smoothing an unbiased measure risk. This compared with generalized cross validation (GCV) criterion smoothing....

The enhanced integrated climactic model (EICM) is generally recognised as the standard approach for estimating pavement temperature profiles. Applications of EICM are not limited to designing pavements but have also been expanded understanding urban heat islands and impact climate change on maintenance rehabilitation costs. However, many parts contain errors that lead an overprediction high temperatures, which has direct implications towards applicability using in its current form broad...

Temperature profiles are a fundamental input into mechanistic-empirical pavement analysis and design, the enhanced integrated climatic model (EICM) is state-of-the-practice for calculating those profiles. The EICM has also been used in other applications, such as to evaluate effects of climate change on pavements estimate urban heat islands. calculations temperatures can be viewed having two primary components that together act system: thermal describing conductance throughout pavement,...

Transportation asset management (TAM) practices continue to grow and develop as transportation agencies seek make more objective defensible decisions, well responding recent legislation. One primary goal of TAM is provide a structure in which decisions on how distribute resources across many disparate assets can be made using systematic process. Resource allocation analogous multi-objective optimization, thus presents the complication that potential optimal solutions (i.e., Pareto set)...

Transportation asset management (TAM) relies on data to inform decisions the maintenance or improvement of a given asset. Two essential elements in TAM process include inventory, and condition an over time. Often, is described using several factors, such as amounts types cracking, those factors are then combined form index. The index frequently basis for developing performance prediction models. However, when defined measure comprised metrics, risk exists that considerable information could...

This article presents the development of a pavement management system (PMS) for town Christiansburg, VA, and effectiveness applications as decision support tool. Researchers worked with personnel from Christiansburg to gather inventory data past work history on all pavements within town’s network. First, network was defined by importing existing GIS into commercially available PMS software. The expected performance then modeled using age along surface condition information gathered during...

The structural capacity of a pavement has been shown to be an excellent indicator the required maintenance and expected performance asphalt pavements, but studies reported in literature have produced few indices for composite systems. This paper presents relationship predict future functional (i.e., behavior surface condition over time) pavements as function its measured using falling weight deflectometer (FWD). Network-level deflection data were collected FWD between years 2005 2007 on...

The Highway Economic Requirements System (HERS) is an analysis tool that was developed with the primary purpose of estimating future investment requirements US road network, which directly informs biennial report on conditions and performance submitted to Congress. One four types considered in HERS pavement surface improvement, or effects resulting from maintaining rehabilitating segments national highway system over a significant time period (typically 20 years). Pavement models are...