Study on Migratory Behavior of Aggregate in Asphalt Mixture Based on the Intelligent Acquisition System of Aggregate Attitude Data

Zhang, Chen; Zhang, Zhengwei

doi:10.3390/su13063053

Cited by 12 publications

(4 citation statements)

References 22 publications

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“…This is consistent with the national development aims of energy conservation, emission reduction, and green environment protection and meets the strategic goals of the national dual carbon policy. In fact, current research in the field of intelligent concrete aggregates is part of an important development trend [44][45][46]. In the future, we hope to integrate CRCA into intelligent elements to better realize a multifaceted and full chain of deep integration of concrete building materials in the fields of intelligence and ecological environment.…”

Section: Discussionmentioning

confidence: 99%

Property Improvement of Recycled Coarse Aggregate by Accelerated Carbonation Treatment under Different Curing Conditions

Yang

Lin

et al. 2023

Sustainability

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Recycled aggregate (RA) made from waste concrete has inferior fundamental properties, i.e., apparent density, water absorption, mass variation, carbonation ratio, etc., compared to those of natural aggregate (NA), severely restricting its application in practical projects. However, using CO2 to accelerate RA carbonation can effectively improve these properties, and this treatment approach can promote energy savings and sustainable development. The accelerated carbonation curing conditions for RA can significantly impact the modification effect of RA. For this purpose, this paper used recycled coarse aggregate (RCA) as a case study. An accelerated carbonation modification treatment experiment for RCA under different accelerated carbonation curing conditions was carried out, and the effects of relative humidity and CO2 concentration on the apparent density, water absorption, moisture content, mass variation and carbonation ratio of RCA under a constant ambient temperature were explored and quantified. The results indicated that the best-accelerated carbonation curing conditions applicable to this paper’s RCA were confirmed as being an environmental temperature of 20 °C and a relative humidity of 70%, as well as a CO2 concentration of 20%. Under these conditions, the apparent density and water absorption of CRCA are approximately 1.04 times and 75.30% higher than those of RCA, and, in addition, the carbonation ratio for RCA under the optimal accelerated carbonation curing conditions is all higher than others, thus improving the properties of RCA to a certain degree. Finally, in this paper, the variation trends of the RCA property indexes in terms of carbonation time treated by the best accelerated carbonation curing conditions are examined, and the time-varying models for the RCA property indexes during the accelerated carbonation are established.

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Section: Discussionmentioning

confidence: 99%

Property Improvement of Recycled Coarse Aggregate by Accelerated Carbonation Treatment under Different Curing Conditions

Yang

Lin

et al. 2023

Sustainability

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“…The digital speckle correlation test is applicable to the analysis of strain variation of the specimen cross-section [ 42 , 43 ]. Various smartrocks, including Intelligent Aggregate [ 44 ], Intelligent Attitude Aggregate [ 46 ], and SmartRock [ 33 , 45 ], are only applicable to a point in the asphalt mixture, and the test results have limitations due to the relatively few collected data. The indentation test can be used to characterize the magnitude and distribution of contact forces on a single contact surface, but it cannot characterize the load transfer in the whole blend structure.…”

Section: Definitions and Test Methods For Load Transfer Mechanismmentioning

confidence: 99%

Review on Load Transfer Mechanisms of Asphalt Mixture Meso-Structure

Wang

Miao

et al. 2023

Materials

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Asphalt mixture is a skeleton filling system consisting of aggregate and asphalt binder. Its performance is directly affected by the internal load transfer mechanism of the skeleton filling system. It is significant to understand the load transfer mechanisms for asphalt mixture design and performance evaluation. The objective of this paper is to review the research progress of the asphalt mixture load transfer mechanism. Firstly, this paper summarizes the test methods used to investigate the load transfer mechanism of asphalt mixtures. Then, an overview of the characterization of load transfer mechanism from three aspects was provided. Next, the indicators capturing contact characteristics, contact force characteristics, and force chain characteristics were compared. Finally, the load transfer mechanism of asphalt mixtures under different loading conditions was discussed. Some recommendations and conclusions in terms of load transfer mechanism characterization and evaluation were given. The related work can provide valuable references for the study of the load transfer mechanism of asphalt mixtures.

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“…Figure 6 shows the change in air void content for each mixture with the increasing of F-T cycles. Zhang C and Zhang Z [58] developed an intelligent collection system for coarse aggregate attitude using 3D printing and wireless sensing. In this study, X-ray CT scanning was used to monitor the movements of the coarse aggregate particles at different compaction stages and to validate the proposed system.…”

Section: Microstructure Analysis Of Ac Mixtures Using X-ray (Ct Scan)mentioning

confidence: 99%

“…The use of X-ray CT scanning and image processing techniques in AC microstructure analysis has shown possibilities for numerical simulations that can accurately predict the mechanical performance of AC. Li et al [59] used X-ray CT scanning and digital image Zhang C and Zhang Z [58] developed an intelligent collection system for coarse aggregate attitude using 3D printing and wireless sensing. In this study, X-ray CT scanning was used to monitor the movements of the coarse aggregate particles at different compaction stages and to validate the proposed system.…”

Section: Microstructure Analysis Of Ac Mixtures Using X-ray (Ct Scan)mentioning

confidence: 99%

Using Imaging Techniques to Analyze the Microstructure of Asphalt Concrete Mixtures: Literature Review

Alawneh

Soliman

2023

Applied Sciences

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The performance of asphalt concrete (AC) mixtures depends highly on their internal structure and the interaction of the mixture components under different loading conditions. Imaging techniques provide effective tools that can assess the microstructure and failure mechanisms of materials. Imaging techniques have been used in recent research studies to examine and analyze the evolution of the internal structure of AC mixtures resulting from traffic and environmental loading. Increasing knowledge of the microstructural properties and mechanical behaviour of AC mixtures could improve the design process and enable researchers to develop more accurate prediction models for the long-term performance of pavements. This paper reviews three imaging techniques which were used to characterize the microstructure of AC mixtures. These three imaging techniques are digital camera imaging, scanning electron microscope (SEM) imaging, and X-ray computed tomography (CT) scan. Extensive insight has been presented into these imaging techniques, including their principles, methods, sample preparation, and associated instruments. This review provides guidelines for future research on using these imaging techniques to analyze the microstructure of AC mixtures and assess their long-term performance.

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Study on Migratory Behavior of Aggregate in Asphalt Mixture Based on the Intelligent Acquisition System of Aggregate Attitude Data

Cited by 12 publications

References 22 publications

Property Improvement of Recycled Coarse Aggregate by Accelerated Carbonation Treatment under Different Curing Conditions

Property Improvement of Recycled Coarse Aggregate by Accelerated Carbonation Treatment under Different Curing Conditions

Review on Load Transfer Mechanisms of Asphalt Mixture Meso-Structure

Using Imaging Techniques to Analyze the Microstructure of Asphalt Concrete Mixtures: Literature Review

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