Assessing Reliability and Potentiality of Nonnuclear Portable Devices for Asphalt Mixture Density Measurement

Megali, Giuseppe; Cacciola, Matteo; Ammendola, R; Moro, Antonino; Praticò, Filippo Giammaria; Morabito, Francesco Carlo

doi:10.1061/(asce)mt.1943-5533.0000088

Cited by 11 publications

(9 citation statements)

References 4 publications

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“…Some devices based on the capacitive electromagnetic (EM) method have been proposed in the 1990’s as alternative methods (Megali et al ). Many studies have been presented by American organizations of transportation, and these commonly confirm the possibility of using the capacitive EM method for quality control in new pavement construction.…”

Section: Introductionmentioning

confidence: 99%

Non‐destructive assessment of hot mix asphalt compaction/density with a step‐frequency radar: case study on a newly paved road

Fauchard

Beaucamp

Laguerre

2014

Near Surface Geophysics

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A Step Frequency Radar (SFR) is used for assessing the compaction of Hot Mix Asphalt (HMA) layers. The system is composed of a network analyser and an Ultra Wide Band (UWB) antenna placed above the road surface. The measurements are carried out on a new-paved road in Cagny (Normandie, France). The SFR system provides the permittivity of the first overlay. The data is corrected from vehicle vibrations and calibrated at fixed locations. Then, the HMA compaction is deduced with a Lichteneker-Rother (LR) model. The results are compared with standard tests (gamma bench testing on cores and in-place nuclear gauge). We show that the SFR system allows the nondestructive assessment of HMA overlay with a high density of points, and with an accuracy close to the compaction provided by standard tests

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Section: Introductionmentioning

confidence: 99%

Non‐destructive assessment of hot mix asphalt compaction/density with a step‐frequency radar: case study on a newly paved road

Fauchard

Beaucamp

Laguerre

2014

Near Surface Geophysics

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“…The detection of clay balls can be achieved by measuring the density or texture of asphalt pavement. Pavement sections with observed clay balls are usually characterized with extreme high in-place air voids or very non-uniform texture distribution [14,15]. In this study, in order to rapidly detect clay balls, pavement surface images were collected and analyzed using the INDOT pavement infrared image collection system integrated with an infrared (IR) camera, a gray scale high-speed camera and a right of way camera (iPhone 4S) as shown in Figure 3.…”

Section: Methodsmentioning

confidence: 99%

Field Investigation of Clay Balls in Full-Depth Asphalt Pavement

et al. 2019

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Clay ball is a pavement surface defect which refers to a clump in which clay or dirt is mixed with hot asphalt mixture. Clay ball is typically caused by a combination of aggregate contamination of clay or soil, high aggregate moisture, and low production temperature at the asphalt plant. It usually appears a few weeks or months after paving under traffic load, after being liquefied and knocked from the pavement surface. Clay balls can be the source of potholing, raveling, and other issues such as moisture infiltration and reduced ride quality. This paper presents an investigation of the clay balls on US-31 one winter after construction in Hamilton County, Indiana. In order to understand the pavement condition, their severity was measured using both visual observation and infrared image collection system. In addition, a clay ball amount, its distribution pattern, and cores condition were evaluated. A precipitation effect on clay ball formation was investigated for finding a cause of the clay balls. The investigation found that infrared image collection system was appropriate in detecting the clay balls. The clay balls were elliptic in shape with 2.5 cm to 10 cm in diameter, and the maximum clay ball depth was almost penetrating the entire surface course. It was also found that the asphalt paving on the raining days or right after raining could increase the potential of clay balls. Monitoring of aggregate moisture during construction on or after raining days should be able to reduce the risk of clay balls.

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“…Surface irregularities (i.e., the rough surface texture of a typical specimen) can introduce inaccuracies, because, in practice, an "osculatory" volume is computed. The parameter P is a density estimate derived from measurements of a non-nuclear portable device, collected at the tested surface (Williams, 2008;Megali et al, 2010;Rao et al, 2007;Kvasnak et al, 2007;Romero, 2002;Sargand et al, 2005;TransTech, 2003;Gamache, 2004Gamache, , 2005Praticò et al, 2009;Praticò et al, 2009a;Praticò and Moro, 2011;Alvarez et al, 2010). In non-nuclear portable device measurements, an electrical current is transmitted from a transmitter through the asphalt concrete pavement at a given location and is detected by the receiver.…”

Section: Densitymentioning

confidence: 99%

“…Researchers have attempted to find correlations between the results obtained using different procedures (Brown et al, 2004;Cooley et al, 2002;Crouch et al, 2003;Mohammad et al, 2005;Montepara & Virgili, 1996;Spellerberg & Savage, 2004;Williams et al, 2005;Megali et al, 2009). Studies have been carried out in order to propose a theoretical framework for interpreting in-lab and on-site measurements and in the aim of proposing strategies for using non-nuclear portable devices in QC/QA (Megali et al, 2010). A decrease in porosity (or effective porosity) yielded in-lab specific gravities that converged.…”

Section: Densitymentioning

confidence: 99%

QA/QC in Transport Infrastructures: Issues and Perspectives

Praticò¹

2011

Modern Approaches to Quality Control

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Assessing Reliability and Potentiality of Nonnuclear Portable Devices for Asphalt Mixture Density Measurement

Cited by 11 publications

References 4 publications

Non‐destructive assessment of hot mix asphalt compaction/density with a step‐frequency radar: case study on a newly paved road

Non‐destructive assessment of hot mix asphalt compaction/density with a step‐frequency radar: case study on a newly paved road

Field Investigation of Clay Balls in Full-Depth Asphalt Pavement

QA/QC in Transport Infrastructures: Issues and Perspectives

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