Particle Size Characteristics of Unconventionally Large Aggregate Particles by Stereophotography

Coban, Haluk Sinan; Sun, Qi; Çetin, Bora; Zheng, Junxing

doi:10.1061/9780784482803.020

Cited by 2 publications

(2 citation statements)

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“…In the color map, the test surface where z = 0 mm is shown by a dark blue color, and the highest points (from the test surface) are shown by a dark red color. The longest, the intermediate, and the shortest particle dimensions obtained from upper-half particle models are defined as the length, width, and thickness of particles, respectively (Zheng and Hryciw 2017;Coban et al 2020). To calculate sphericity, only the length and the width of the particles were used [Equation (4.1)] (Krumbein and Sloss 1951).…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the use of alternative materials in pavement foundation layers

Coban¹

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Although there have been several studies about using recycled aggregates to construct recycled aggregate base (RAB) layers, there is a lack of information about the effects of gradation of recycled concrete aggregate (RCA) materials on the performance of these layers.There is also limited information available regarding the use of RCA and recycled asphalt pavement (RAP) materials together in RAB layers. In this study, three test cells were constructed with RAB layers using two different RCA materials with different gradations and a blend of RCA and RAP materials. Another cell was constructed with a natural aggregate base layer. The physical characteristics of the base layer aggregates were determined, and resilient modulus (MR) and falling head permeability tests were performed. In the field, a series of falling weight deflectometer (FWD) tests were performed, and the changes in air and soil temperatures over

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Section: Discussionmentioning

confidence: 99%

“…A summary of the index properties of the aggregates is provided in Table 4.1. (AV) cart for stereophotography [detailed information about the image station is provided by Coban et al (2020)]. The station included a camera, a camera slider, LED lighting, and a test surface.…”

Section: Methodsmentioning

confidence: 99%