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An aggregate gradation detection method based on multi

2021.8.1  Compared with single-view information, multi-view information can improve the accuracy and repeatability of gradation calculations. The use of multi-view

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Rapid pavement aggregate gradation estimation based on

2022.2.1  Non-destructive pavement aggregate gradation estimation during construction is required because the aggregate distribution is difficult to control but

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Development and Potential Use of an Automated Aggregate Gradation ...

2020.7.24  The automated gradation device performs gradation analysis through an automation of the standard gradation test procedures that are performed in laboratories

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DEVELOPMENT AND POTENTIAL USE OF AN AUTOMATED AGGREGATE GRADATION DEVICE

The automated gradation device performs gradation analysis through an automation of the standard gradation test procedures that are performed in laboratories throughout the

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Rapid pavement aggregate gradation estimation based on

2021.11.1  Rapid pavement aggregate gradation estimation based on 3D data using a multi-feature fusion network. Zihang Weng, Gulnigar Ablat, +4 authors. Jing Cao.

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Performance Evaluation of Automated Machines for Measuring Gradation

2003.12.1  Several automated devices are commercially available for measuring the gradation of stone aggregates. These computerized machines, which provide a rapid

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RAPID TEST TO ESTABLISH GRADING OF UNBOUND AGGREGATE

2002.2.1  Several automated devices are commercially available for measuring the gradation of unbound stone aggregates. These computerized machines, which provide a

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Photogrammetric 3D Scanning of Asphalt Cores for

2023.7.19  develop an automated algorithm detecting layer boundaries; and 3) to develop an automated algorithm to classify aggregate mixture gradation. 2. Material and

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Aggregate gradation theory, design and its impact on

2018.2.5  The results indicate that, (i) Theory of maximum density curve, particle interfering theory and fractal theory are the main theories for aggregate gradation. (ii)

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Aggregate Gradations for Concrete Pavement Mixtures

2024.1.15  The aggregate gradation plays a major role in the constructability of a slip formed pave-ment. For example, if the aggregate grada-tion contains high amounts on any given sieve size, it negatively impacts the ability of a mixture to be consolidated under vibra-tion [4]. Also, the material on the #8 through

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COMPARISON TESTS OF AUTOMATED EQUIPMENT FOR ANALYZING AGGREGATE GRADATION

2001.4.22  A number of automated test machines are commercially available for rapidly determining the grain size distribution of unbound aggregates. Designed to provide a faster alternative to standard sieve analyses, these machines capture and analyze digital images of the aggregate particles to determine gradation.

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COMPARISON TESTS OF AUTOMATED EQUIPMENT FOR ANALYZING AGGREGATE GRADATION

A number of automated test machines are commercially available for rapidly determining the grain size distribution of unbound aggregates. Designed to provide a faster alternative to standard sieve analyses, these machines capture and analyze digital images of the aggregate particles to determine gradation. Five of these test machines were evaluated

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Rapid pavement aggregate gradation estimation based on

2022.2.1  Aggregate gradation is a size distribution of mineral aggregate, which plays an essential role in the mixture's properties, including mechanical, physical, and chemical characteristics [1]. ... Automated and contactless approaches for pavement surface texture measurement and analysis – A review. Construction and Building Materials, Volume 301 ...

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Gradation Test – Pavement Interactive

Figure 1: Stacked sieves used for a gradation and size test. Figure 2: Weighing the aggregate retained on a sieve. In a gradation and size analysis, a sample of dry aggregate of known weight is separated through a series of sieves with progressively smaller openings. Once separated, the weight of particles retained on each sieve is measured ...

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AIMS: The Future in Rapid, Automated Aggregate Shape and Texture ...

2006.1.1  AIMS can determine the shape and texture properti es of coarse aggregate particles ranging from 4.75 up. to 37.5 mm in size. The aggregate particles are placed on the sample tray in a ...

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Discrete Aggregate Mass Calculation Method for Visual

2022.11.20  Moreover, to achieve a complete automated visual inspection of the aggregate gradation and elongated and flat aggregate contents, future studies will focus on the following: (1) a segmentation algorithm of touching particles and data association algorithm for accurately obtaining multi-view shape features of aggregates, (2) exploring

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Aggregate gradation theory, design and its impact on

2018.2.5  The results indicate that, (i) Theory of maximum density curve, particle interfering theory and fractal theory are the main theories for aggregate gradation. (ii) The gradation design of asphalt mixture has two types by aggregate morphology-continuous and gap gradation, or three types by air voids of mixture-dense, open and semi-open gradation.

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A coarse aggregate gradation detection method based on

2023.5.9  3D point cloud. Deep learning. 1. Introduction. Aggregate gradation refers to the distribution of aggregate particles, and many important coarse aggregate asphalt pavement properties are determined by it, including porosity, water penetration, deformation, bearing capacity and so on [1], [2]. The aggregate gradation needs to be tested before ...

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An aggregate gradation detection method based on multi

2021.8.1  The automatic aggregate gradation detection method based on image processing technology can improve the detection efficiency and reduce the labour cost, which has tremendous engineering value. Over the past few years, digital image processing has been used to study the shapes and sizes of aggregates. Masad et al. proposed

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A Simple Guide to Aggregate Gradation Sieve

Dry the Sample in an Oven. The drying process is a very important step because the weight will be the key indicator for creating the aggregate sieve analysis. Moisture in the material adds weight falsifying the results.

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A Review of Concrete Aggregate Gradations - Winter

2022.2.7  Aggregate Grading. The aggregate gradation and content can impact several properties of a concrete mix: Finishability, workability, pumpability, strength, permeability, and shrinkage. Aggregates having a smooth grading curve size will generally produce mixtures with fewer voids between particles.

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Rapid extraction of pavement aggregate gradation based on

DOI: 10.1016/j.autcon.2023.105023 Corpus ID: 260054396; Rapid extraction of pavement aggregate gradation based on point clouds using deep learning networks @article{Chen2023RapidEO, title={Rapid extraction of pavement aggregate gradation based on point clouds using deep learning networks}, author={Siyu Chen and Can Chen and

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Rapid extraction of pavement aggregate gradation based on

2023.10.1  Usage of asphalt mixture with poor gradation will most likely lead to pavement deficiency. There is a growing need for rapid and non-destructive methods to extract pavement aggregate gradation. In this study, a deep learning-based method that utilizes point clouds data for gradation extraction was proposed.

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Gradation and Size – Pavement Interactive

The particle size distribution, or gradation, of an aggregate is one of the most influential aggregate characteristics in determining how it will perform as a pavement material. In HMA, gradation helps determine almost every important property including stiffness, stability, durability, permeability, workability, fatigue resistance, frictional ...

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Automated Intelligent real-time system for aggregate classification ...

2011.7.8  All analyses and data reporting are performed in a custom software package. This system is used in the laboratory to obtain automated aggregate gradation measurements and also particle flatness and elongation. The third system called the CPA (Tyler, 2001) is similar to the VDG-40 Videograder. The CPA uses a line-scan CCD

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An aggregate gradation detection method based on multi

2021.8.1  The automatic aggregate gradation detection method based on image processing technology can improve the detection efficiency and reduce the labour cost, which has tremendous engineering value. Over the past few years, digital image processing has been used to study the shapes and sizes of aggregates. Masad et al. proposed

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Minerals Free Full-Text A Novel Model of Aggregate Gradation

2017.7.2  Mining tailings as a raw material for preparing autoclaved bricks have attracted much attention. The tailings subjected to milling always have the characteristic of fine granularity. However, the proportion of the fine aggregates in autoclaved bricks was very low using the current gradation formula, which impeded the utilization of the tailings. In

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(PDF) Packing Theory and Volumetrics-Based Aggregate Gradation

2020.3.18  This paper. describes a novel aggregate gradation and asphalt mixture design concept that estimates the target gradation and optimum asphalt content at. an early stage. V oids in mineral aggregate ...

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Rapid pavement aggregate gradation estimation based on

2021.11.1  The 2D aggregate gradation obtained from the digital image segmentation procedure is transferred into 3D gradation by stereological method. The results show that fuzzy network can balance the ...

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Performance Evaluation of Automated Machines for Measuring Gradation

N2 - Several automated devices are commercially available for measuring the gradation of stone aggregates. These computerized machines, which provide a rapid alternative to manual sieving, capture and process two-dimensional digital images of aggregate particles to determine grain size distribution.

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A coarse aggregate gradation detection method based on

2023.5.9  Dataset. In this study, a 3D point cloud dataset of aggregate particle sizes was established. The dataset contains six categories of aggregates: 2.36 mm, 4.75 mm, 9.5 mm, 13.2 mm, 16 mm and 19 mm, with an average of 1200 aggregates in each category. Aggregates with particle sizes in the range of 0–2.36 mm are not studied in this paper

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RAPID TEST TO ESTABLISH GRADING OF UNBOUND AGGREGATE

Five of these automated gradation devices were evaluated for accuracy and performance. Fifteen aggregate test samples, with different size, shape, and mineral characteristics, were used in these tests. To quantify how well the machine results compare with data from standard sieve analyses, the CANWE statistic was developed and used.

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RAPID TEST TO ESTABLISH GRADING OF UNBOUND AGGREGATE

ICAT Project 503 was undertaken to study rapid, automated methods of determining the grain size distribution of unbound aggregate products. Automatic measurement of particle size and shape properties has the potential to overcome problems with manual measurements such as subjectivity, labor intensity, and slow speed.

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DEVELOPMENT AND POTENTIAL USE OF AN AUTOMATED AGGREGATE GRADATION DEVICE

The determination of aggregate gradation is one important test that is performed during the design, production, and process control in the hot-mix asphalt and the aggregate industries. There is a need for an improved method of gradation analysis in which the gradation determination is accomplished in a more rapid, efficient, and accurate manner.

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Considerations for Design of Aggregate Gradation in

2021.8.30  However, both Cu and Cc significantly affect the Ks value, and Cc plays a crucial role in the design of aggregate gradation of drainage structures. Therefore, based on the simulations results, a Cu range of 6–8 and a value of Cc near 1, for the pavement drainage layer is recommended. The value of d10 and RD can be designed based on the ...

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Automated Intelligent real-time system for aggregate

2011.7.8  This system is used in the laboratory to obtain automated aggregate gradation measurements and also particle flatness and elongation. The third system called the CPA (Tyler, 2001) is similar to the VDG-40 Videograder. The CPA uses a line-scan CCD camera to capture the image and evaluate every particle in the sample as it falls in front

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Rapid pavement aggregate gradation estimation based on

DOI: 10.1016/j.autcon.2021.104050 Corpus ID: 244470527; Rapid pavement aggregate gradation estimation based on 3D data using a multi-feature fusion network @article{Weng2021RapidPA, title={Rapid pavement aggregate gradation estimation based on 3D data using a multi-feature fusion network}, author={Zihang Weng and Gulnigar

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Photogrammetric 3D Scanning of Asphalt Cores for Automatic

Asphalt cores are routinely drilled from existing roadways and manually tested to determine the thickness of individual layers and classify the gradation of the aggregate mixture within each layer. This process is time-consuming, hazardous, and destroys the sample core. This study presents a non-destructive, close-range photogrammetry-based 3D scanning

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Rapid extraction of pavement aggregate gradation based on ...

2023.7.20  Rapid extraction of pavement aggregate gradation based on point clouds using deep learning Automation in Construction ( IF 10.3) Pub Date : 2023-07-20, DOI: 10.1016/j.autcon.2023.105023 Usage of asphalt mixture with poor gradation will most likely lead to pavement deficiency.

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