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Aggregate Morphology and Internal Structure for Asphalt

Aggregate Morphology and Internal Structure for Asphalt

Aggregate Morphology and Internal Structure for Asphalt ...

Although aggregate morphology and internal structures for real samples have been previously studied, these parameters for computer-generated models are rarely reported. This study aims to propose an approach to analyze and quantify the aggregate morphology and internal structures of computer-generated microstructural models of asphalt concrete.

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Aggregate Morphology and Internal Structure for Asphalt ...

One concern for the computer-generated model is the accuracy in aggregate morphology and internal structure compared with the X-ray image-based models. Therefore, it is desirable to generate microstructural models with aggregate morphology and internal structures close to the real asphalt concrete samples.

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Aggregate Morphology and Internal Structure for Asphalt ...

2018-7-26  Although aggregate morphology and internal structures for real samples have been previously studied, these parameters for computer-generated models are rarely

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"Aggregate morphology and internal structure for asphalt ...

The reconstruction of microstructural models is the prerequisite step for the micromechanical simulation of asphalt concrete. Computer-generated microstructural models have been developed because the traditional X-ray image-based models are costly and time-consuming. One concern for the computer-generated model is the accuracy in aggregate morphology and internal structure compared with the X ...

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Aggregate Morphology and Internal Structure for Asphalt ...

Aggregate Morphology and Internal Structure for Asphalt Concrete: Prestep of Computer-Generated Microstructural Models. The reconstruction of microstructural models is the prerequisite step for the micromechanical simulation of asphalt concrete.

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(PDF) Modelling and evaluation of aggregate morphology

In this study, the microstructural model of asphalt mixture used for uniaxial compression test was reconstructed based on X-ray CT scans, thus maintaining the original morphology of the

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Modelling and evaluation of aggregate morphology on ...

2017-2-15  In this study the dividing size for coarse aggregate and fine aggregate was 2.36 mm, i.e. aggregates smaller than 2.36 mm were eliminated and were regarded as a part of the mastic; the passing percentage of fine aggregates was kept the same proportion of corresponding portion with asphalt mixture gradation.Assuming the asphalt can be attached to the surface of aggregates and fillers

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Effect of aggregate morphologies and compaction

2020-12-10  Aggregates account around 95% of the total mass of asphalt mixture. Therefore, the internal structure of asphalt mixture is seriously affected by the morphological characteristics of aggregate, such as granular shape, angularity and surface texture,.

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Effect of Key Aggregate Morphology and Mold Modulus

2019-5-8  To improve the influence of uneven spatial distribution of internal air voids on the structure strength of asphalt mixture, especially the determination involved in the mechanical parameters of an asphalt mixture specimen in the laboratory, four different asphalt mixtures were fabricated by a Superpave Gyratory Compactor to research two influential factors: the morphological features of key 4.75-mm-diameter aggregates

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Influence Analysis and Optimization for Aggregate ...

2018-10-19  Aggregate in asphalt mixtures generally accounts for approximately over 90% by weight, which plays ... angularity, and surface texture. Hu et al. [7] studied the effects of aggregate particles on internal structure in asphalt concrete and results showed that high-temperature damage ... Xiao et al. [9] studied the fine aggregate morphology ...

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Effect of Key Aggregate Morphology and Mold Modulus

2019-5-8  Effect of Key Aggregate Morphology and Mold Modulus on the Spatial Distribution of Internal Air Voids in the Compacted Asphalt Mixture (Received 24 March 2018; accepted 14 February 2019) Published Online: 08 May 2019. CODEN: JTEVAB

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Three-Dimensional Simulation of Aggregate and Asphalt ...

2019-1-21  the performance of pavement. The geometrical morphology influences the slippage and interlock among aggregates for resisting and distributing applied loads. In recent years, the discrete element method (DEM) has been employed for simulation of asphalt mixture structure. This paper introduces an approach for simulation of aggregate and asphalt

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Influence Analysis and Optimization for Aggregate ...

2018-10-19  Aggregate in asphalt mixtures generally accounts for approximately over 90% by weight, which plays ... angularity, and surface texture. Hu et al. [7] studied the effects of aggregate particles on internal structure in asphalt concrete and results showed that high-temperature damage ... Xiao et al. [9] studied the fine aggregate morphology ...

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The Testing Method for Aggregate Internal Structure

indicator to evaluate the aggregate internal structure types. When the height of core sample (H mix) is less than or equal to the height of contrast sample (H DRC), that is, H mix ≤ H DRC, the type structure of asphalt mixture is the skeleton structure. If not, the type structure of asphalt mixture is the suspension structure.

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Morphology and internal structure control of rod–coil ...

The molecular packing of rod–coil copolymers, which relates closely to their aggregate morphology, significantly influences their optoelectronic properties.The morphological phase diagram of rod–coil block copolymers in mixed selective solvents and the internal structures of the resulting aggregates are studied by using dissipative particle dynamics.

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Influence Analysis and Optimization for Aggregate ...

Aggregate is an indispensable raw material for asphalt pavement construction. This study evaluates the influences of aggregate morphological characteristics on the high- and low-temperature viscoelasticity of asphalt mixtures. Based on simplex lattice mixture design (SLD), asphalt mix samples were designed and prepared with the same gradation but three different types of aggregates.

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Stability prediction for asphalt mixture based on ...

2021-6-30  1 INTRODUCTION. Conventionally, the stability of asphalt mixture is evaluated by macroscopic indices such as the aggregate segregation (Fang Labi, 2007), and surface deflections (Wu et al., 2020), which, however, cannot accurately capture the internal structure of the skeleton. The skeleton of an asphalt

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Unified Imaging Approach for Measuring Aggregate ...

Tongyan Pan, Erol Tutumluer, Samuel H. Carpenter, Effect of Coarse Aggregate Morphology on the Resilient Modulus of Hot-Mix Asphalt, Transportation Research Record: Journal of the Transportation Research Board, 10.1177/0361198105192900101, 1929, 1, (1-9), (2005).

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杨旭 - 长安大学 - 公路学院

You, Z., and Hu, J. (2016) Three-Dimensional Finite Element Model Reconstruction Approach for Asphalt Concrete Using Aggregate Representations in Discrete Element Model. ASCE Journal of Materials in Civil Engineering.

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Effect of key aggregate morphology and mold modulus on

Air voids in asphalt mixtures have a significant effect on the mechanical performance and functional characteristics of asphalt pavement. The reasonable spatial distribution of internal air voids is not only necessary to ensure the road performance of asphalt pavement in the field but also helps to enhance the determination accuracy of a performance parameter of an asphalt mixture specimen in ...

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Three-Dimensional Simulation of Aggregate and Asphalt ...

2019-1-21  the performance of pavement. The geometrical morphology influences the slippage and interlock among aggregates for resisting and distributing applied loads. In recent years, the discrete element method (DEM) has been employed for simulation of asphalt mixture structure. This paper introduces an approach for simulation of aggregate and asphalt

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Development of a Morphology-based Analysis

2015-4-24  The morphology of asphalt mixtures plays a vital role in their proper- ... coarse aggregate shape on rutting performance of asphalt concrete mixtures has been evaluated. The authors proposed a measure of the combined effect of the ... ize the internal structure of the asphalt mixture and micro-mechanical modeling

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Morphology and internal structure control of rod–coil ...

The molecular packing of rod–coil copolymers, which relates closely to their aggregate morphology, significantly influences their optoelectronic properties.The morphological phase diagram of rod–coil block copolymers in mixed selective solvents and the internal structures of the resulting aggregates are studied by using dissipative particle dynamics.

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Frontiers Study on Quantitative Characterization of ...

2021-2-2  The morphological characteristics of aggregate include outline shape, angularity, and surface texture, which determine the mutual extrusion and friction between aggregates, and significantly affect the performance of asphalt pavement. At present, the research on the morphological characteristics of coarse aggregate is mainly focused on indoor visual identification technology (AIMS, XCT, etc ...

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Aggregate structure, morphology and the effect of ...

Aggregate structure, morphology and the effect of aggregation mechanisms on viscosity at elevated protein concentrations Biophys Chem. 2015 Dec;207:21-9. doi: 10.1016/j.bpc.2015.07.002. Epub 2015 Jul 17. Authors Gregory V Barnett 1 ...

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基于材料基因组方法的沥青混合料基因特性综述及展望 - chd ...

2020-7-2  基于材料基因组方法的沥青混合料基因特性综述及展望 邢超 1, 谭忆秋 1,2, 张凯 1, 单丽岩 1, 徐慧宁 1 1. 哈尔滨工业大学 交通科学与工程学院, 黑龙江 哈尔滨 150090; 2. 哈尔滨工业大学 城市水资源与水环境国家重点实验室, 黑龙江 哈尔滨 150090

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Effects of aggregate size and specimen scale on asphalt ...

2017-12-14  A micromechanical model based on discrete element method (DEM) was employed to investigate the effects of aggregate size and specimen scale on the cracking behavior of asphalt mixture. An algorithm for generating three-dimensional aggregates that can reflect the realistic geometry such as shape, size and fracture surface of aggregate particles was developed using a user-defined procedure

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Morphology and the internal structure of words

Morphology is the aspect of language concerned with the internal structure of words, and languages vary in the extent to which they rely on morphological structure. Consequently, it is not clear whether morphology is a basic element of a linguistic structure or whether it emerges from systematic regularities between the form and meaning of words.

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Network morphology of straight and polymer modified ...

1998-12-7  The network is expected to greatly influence the rheological properties of the asphalt binder and ultimately the properties of asphalt concretes. In situ fracture studies of asphalt cement/aggregate composites indicate a possible correlation between the network structure and adhesion between the cement binder and aggregate. Microsc. Res.

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