As part of its mandate, ECDC identifies, assesses and communicates threats to human health from FWD [1]. ECDC launched in 2010 the first EPIS-FWD, a restricted web-based communication platform bringing together multidisciplinary experts to ensure the early detection and coordination of the response to multi-state outbreaks through the timely sharing of cross-sectorial information [2, 3]. Based ...

The evaluation of the bearing capacity asphalt pavements is usually performed by analysing deflections measured a Falling Weight Deflectometer (FWD). deflection changes with pavement temperature. In necessary to consider thermal gradient and perform temperature correction. article contains an analysis effects on FWD results long-term monitored sections. correction was or back-calculated elastic...

The asphalt concrete (AC) dynamic modulus (|E*|) is a key design parameter in mechanistic-based pavement design methodologies such as the American Association of State Highway and Transportation Officials (AASHTO) MEPDG/Pavement-ME Design. The objective of this feasibility study was to develop frameworks for predicting the AC |E*| master curve from falling weight deflectometer (FWD) deflection-...

Falling weight deflectometer (FWD) tests are performed worldwide for assessing the health of pavement structures. Interpretation FWD-measured surface deflections turns out to be challenging because behavior structures is temperature-dependent. In order investigate influence temperature on overall performance and stiffness individual layers, sensors, asphalt strain gauges, accelerometers were in...

A critical issue concerning the deterioration of ageing road infrastructure all around the world is the need to rapidly and cost-effectively evaluate the present condition of pavement infrastructure. Non-Destructive Test (NDT) and evaluation methods are well-suited for characterizing materials and determining structural integrity of pavement systems. The Falling Weight Deflectometer (FWD) is a ...

Quantification of the downed woody materials that comprise forest fuels has gained importance in Caribbean forest ecosystems due to the increasing incidence and severity of wildfires on island ecosystems. Because large-scale assessments of forest fuels have rarely been conducted for these ecosystems, forest fuels were assessed at 121 US Department of Agriculture forest service inventory plots o...

Conventional flexible pavements built on lime stabilized soils (CFP-LSS) were studied for the backcalculation of pavement layer moduli from nondestructive Falling Weight Deflectometer (FWD) testing. The validated ILLI-PAVE finite element program was used in pavement structural analyses by taking into account the effects of nonlinear layer modulus behavior, i.e., stress hardening for granular ma...

PURPOSE To determine whether Heidelberg Retina Tomograph (HRT; Heidelberg Engineering, Dossenheim, Germany) classification techniques and investigational support vector machine (SVM) analyses can detect optic disc abnormalities in glaucoma-suspect eyes before the development of visual field abnormalities. METHODS Glaucoma-suspect eyes (n = 226) were classified as converts or nonconverts based...

The Falling weight deflectometer test (FWD) is a commonly used method for the evaluation of the structural performance of pavement systems. In the FWD test, a large weight is raised off the ground and dropped onto a rubber loading pad creating an impulse load representative of the real loading imposed by heavy traffic on the pavement. The excitation produced by the loading sets off waves in the...

Rubblization is one of the surface preparation techniques before placing a Hot Mix Asphalt (HMA) overlay that involves breaking the Portland Cement Concrete (PCC) pavement into pieces. This paper describes the structural assessment related to the long term performance of rubblized concrete pavements in Iowa. The structural performance of seven representative in-service rubblized concrete paveme...