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automated aggregate gradation automatique

automated aggregate gradation automatique
An aggregate gradation detection method based on multi

2021年8月1日  An aggregate gradation detection method based on multi-view information fusion. Weijun Fan a. , Zeqi Chen a. , Zai Luo a. , Bin Guo b. Show more. Add to

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Rapid pavement aggregate gradation estimation based on

2022年2月1日  Automation in Construction. Volume 134, February 2022, 104050. Rapid pavement aggregate gradation estimation based on 3D data using a multi-feature fusion

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

2020年7月24日  The results show that the automated gradation device, with the use of a correction factor, can accurately and precisely determine the gradation of an aggregate

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Performance Evaluation of Automated Machines for Measuring Gradation

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

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Weakly supervised deep learning-based concrete aggregates ...

2023年12月16日  Vision-based automatic concrete aggregate segmentation helps to facilitate fast quantitative analysis of concrete aggregate shape, gradation, and

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RAPID TEST TO ESTABLISH GRADING OF UNBOUND AGGREGATE

2002年2月1日  Several automated devices are commercially available for measuring the gradation of unbound stone aggregates. These computerized machines, which provide a

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Research on Intelligent Classification of Aggregates ... - IEEE

Abstract: Aggregate grading refers to the proportional relationship between the different particle sizes that make up an aggregate, and is a vital part of aggregate production.

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COMPARISON TESTS OF AUTOMATED EQUIPMENT FOR ANALYZING AGGREGATE GRADATION

2001年4月22日  A number of automated test machines are commercially available for rapidly determining the grain size distribution of unbound aggregates. Designed to

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RAPID TEST TO ESTABLISH GRADING OF UNBOUND AGGREGATE

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

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Performance Evaluation of Automated Machines for Measuring Gradation

2003年12月1日  Several automated devices are commercially available for measuring the gradation of stone aggregates. These computerized machines, which provide a rapid

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Toward Automating Size-Gradation Analysis of Mineral

some progress in the automation -of gradation analysis of the coarse portion of an aggregate blend. The gradation of the fine portion, how­ ever, has major effects on the properties of an aggregate blend. A simple and low-cost approach to automate the gradation analysis of fine aggregate is presented in this paper.

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Photogrammetric 3D Scanning of Asphalt Cores for

2023年7月19日  the aggregate is the component that bears the weight of traffic; thus, the performance of each layer of asphalt is determined by the properties of the aggregate within each layer. Chief among these properties is the range of aggregate sizes found within the layer (Chen and Liew, 2002). This mix of aggregate sizes is called aggregate 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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Implementation of concrete aggregate optimization

2015年1月15日  The methodology described here uses two widely cited techniques to develop optimized aggregate gradations: the modified coarseness factor chart (MCFC), introduced by Shilstone [23] and shown in Fig. 2, and the percent retained chart to systematically determine a “target” gradation and select an optimized blend of the

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

2006年1月1日  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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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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Deep learning-based automated image segmentation for

2020年9月1日  A concrete aggregate segmentation dataset containing 1400 images is created and experiments are conducted. The results show that the proposed method can achieve pixel-level concrete aggregate segmentation with an AP50 of 95.27 %. Compared with the supervised deep learning-based method, the annotation cost is reduced by

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Rapid pavement aggregate gradation estimation based on

2022年2月1日  Non-destructive pavement aggregate gradation estimation during construction is required because the aggregate distribution is difficult to control but impacts pavement performance significantly. This paper proposes a multi-feature fusion network based on Residual Convolutional Neural Network (ResNet) to estimate the aggregate

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An online detection system for aggregate sizes and

2017年8月28日  Favorable aggregate gradation decreases concrete porosity, and increases the concrete’s workability, stability and durability, while reducing the volume of slurry and cost. ... 1 College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China Miner Petrol (2017) 111:135–144 DOI 10.1007/s00710-016-0458-y.

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Rapid pavement aggregate gradation estimation based on

2021年11月1日  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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automated aggregate gradation automatique

The determination of aggregate gradation is one important test that is performed during the design, production, and process control in the hotmix 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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Classification of Coarse Aggregate Particle Size Based on

2022年8月3日  of aggregate size range classifications and aggregate gradation in construction processes. It cannot detect aggregates size on a conveyor belt in real-time. Therefore, it is essential to study a fast and accurate real-time automatic method for coarse aggregate particle size classification for the automatic real-time detection of aggregate ...

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Aggregate particle identification and gradation analysis

2023年6月1日  Consequently, researchers tried to propose new methods to detect the aggregate gradation. An automatic analysis method for particle size distribution of coal samples was established by using gradient watershed algorithm (for pre-segmentation), K-Nearest Neighbor algorithm (for realizing region merging to avoid over-segmentation)

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Rapid Test to Establish Grading of Unbound Aggregate

This final project report describes the development of a laser scanning device for measuring the gradation and other morphological characteristics of unbound construction aggregates. The device is called the LASS, for "Laser-based Aggregate Scanning System." The method of characterizing aggregate particles from three-dimensional (3D) laser profiling required

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Aggregate gradation theory, design and its impact on

2018年2月5日  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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Automated Intelligent real-time system for aggregate

2011年7月8日  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 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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(PDF) Packing Theory and Volumetrics-Based Aggregate Gradation

2020年3月18日  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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Automation of aggregate characterization using laser

2002年8月1日  Results shows that, in this way, the gradation of coarse aggregate (>2.36 mm) in the cement stabilized aggregates can be got and the method helps to detect the gradation change during the road ...

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2D Aggregate Gradation Conversion Framework Integrated

2024年2月26日  The 2D aggregate gradation that characterizes the area fractions of the simulated aggregates of different sizes significantly affects the simulated mesomechanical properties of asphalt concrete. However, there are very few methods for determining the 2D aggregate gradation from the actual three-dimensional (3D) one.

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