investigation of asphalt mixture internal structure

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Investigation of asphalt mixture internal structure ...

May 30, 2020  Three internal-structure indexes, including contact points, aggregate orientation, and spatial distribution, were proposed by Coenen, Kutay et al. to characterize the aggregate structure and volumetric properties of asphalt mixture . The proposed indexes gave insight investigation to the aggregate skeleton and mixture compaction.

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Investigation of asphalt mixture internal structure ...

Three groups of asphalt mixtures with different mixture designs were tested both in the laboratory and in simulation. To evaluate the effects of the reduced material modulus on the internal-structure of asphalt mixture specimen under three compaction states, this study proposed 4 categories of internal-structure indexes in respect of specimen ...

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Investigation of asphalt mixture internal structure ...

Interestingly, the internal structure properties for three types of asphalt mixtures differs from each other and results in various forms of internal structure evolution and micro-crack formation ...

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Investigation of the internal structure change of two ...

Jun 10, 2019  So investigation of the microstructure of asphalt mixtures and its evolution subjected to loading is important for a better understanding of the rutting mechanism of asphalt mixture at high temperature . A Large number of studies have been conducted to characterize the internal structure of asphalt mixture and the microstructure evolution ...

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Investigation of the internal structure change of two ...

A modified wheel tracking test was developed to investigate the internal structure change of asphalt mixture under wheel loading. The sectional images of two-layer specimens after different loading times were acquired and analyzed by 2D image analysis.

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Topic: Comprehensive Investigation of Aggregates in ...

Title: Evaluation of the effects of gyratory and field compaction on asphalt mix internal structure. Source: Materials and Structures, vol. 49, no. 1-2, pp. 665-676 (2016) Abstract: This study investigates the effect of gyratory and field compaction on the internal structure of asphalt mixtures. For this purpose, three new full-scale pavement

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Investigation of asphalt mixture internal structure ...

Three groups of asphalt mixtures with different mixture designs were tested both in the laboratory and in simulation. To evaluate the effects of the reduced material modulus on the internal-structure of asphalt mixture specimen under three compaction states, this study proposed 4 categories of internal-structure indexes in respect of specimen ...

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Investigation on fatigue damage of asphalt mixture with ...

Oct 30, 2016  Fatigue damage caused by vehicle loads is the main asphalt pavement distress, and it deteriorates the serviceability and strength seriously. In order to evaluate the fatigue damage of asphalt mixture under repeated load, microstructures were detected to investigate the morphology change of internal structures using Digital Image Processing (DIP).

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Internal Structure Features of Asphalt Mixture for Field ...

Asphalt mixture is heterogeneous in nature; consequently, macroscopic parameters alone cannot describe the mechanical behavior of the mixture. In recent years, the arrangement of the aggregate particles in terms of spatial and directional distributions, and contact points are contemplated as the internal structure of asphalt. The main purpose of this article is to examine the microstructural ...

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Investigation of Low Temperature Cracking in Asphalt

Investigation of Low Temperature Cracking in Asphalt Pavements ... of pavements and proposes a method for estimating the coefficient based on the thermo-volumetric properties of the asphalt binder and the internal structure of the mixture. ... The research team conducted a detailed study on the effect of aggregate internal structure and mixture ...

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Discrete Element Simulation of the Internal Structures of ...

This study investigated the effects of internal structure on the anisotropic creep behavior of asphalt mixture based on user-defined three-dimensional (3-D) micromechanical discrete element method ...

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Investigation on the designing method of asphalt emulsion ...

Mar 01, 2021  Research on hot mix asphalt mixture showed that the lower the air void of the mixture, the denser the material and the better the durability of the mixture (Liu, P. et al., 2019; Liu, Y. et al., 2019). Second, According to Chinese specifications [4], the air void should be less than 10% before the upper hot-mixed asphalt mixture is paved and ...

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Investigation on aggregate particles migration ...

May 20, 2020  As a typical mixture with a skeleton-void structure, the performance of PAC is greatly affected by the compaction mechanism and internal structure of asphalt mixtures. This study tries to investigate compaction characteristics and migration trends of aggregate particles in porous asphalt mixtures prepared by a vertical vibration compaction ...

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Zhanping You Research Group ASCE

Selected Publications. Investigation of asphalt mixture internal structure consistency in accelerated discrete element models, Zhou, S Chen, D Ge, D Jin, Z You, Construction and Building Materials 244, 118272, 2020; Using discrete element models to track movement of coarse aggregates during compaction of asphalt mixture, F Gong, X Zhou, Z You, Y Liu, S Chen, Construction and Building

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Investigation of Energy-Based Crack Initiation Threshold ...

May 26, 2016  Investigation of Energy-Based Crack Initiation Threshold from Meso-Scale Asphalt Concrete Response ... is used to acquire the internal structure of an asphalt concrete mixture while Digital Image Processing (DIP) techniques is used to segment and analyze the different phases present in the mixture. ... this study also shows the potential of the ...

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High-temperature failure of porous asphalt mixture under ...

Aug 20, 2020  1. Introduction. Asphalt mixture is a composite consisting of aggregates, binder and air voids, which causes complex mechanism characteristics and strains/stress distribution in its internal structure .So investigation of the microstructure characteristic is important to understand the performance of macroscopic behavior of asphalt mixtures, such as rutting resistance .

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A study on fatigue damage of asphalt mixture under ...

Jun 24, 2017  The aim of this paper is investigating the microstructural characteristics of asphalt mixture under different compaction powers. In order to achieve this aim, a test track was built to provide asphalt mixture specimens and X-ray computed tomography (XCT) device was used to scan the internal structure. The aggregate particles and air-voids were extracted using Digital Image

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Investigation of Permanent Deformation Behavior of Steel ...

May 27, 2021  Previous studies have indicated that steel slag can be used as a substitute for natural aggregates in asphalt mixture, while little attention has been paid to systematic investigation of the influences of various external environmental factors on deformation resistance of steel slag asphalt mixture. In order to understand the service behavior of steel slag asphalt mixture, its permanent ...

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‪Siyu Chen‬ - ‪Google Scholar‬

Investigation of asphalt mixture internal structure consistency in accelerated discrete element models X Zhou, S Chen, D Ge, D Jin, Z You Construction and Building Materials 244, 118272 , 2020

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- Assessing the Variation in Asphalt Mix Properties at Non ...

do not necessarily reflect the views of UKDiss. Share this: Facebook Twitter Reddit LinkedIn WhatsApp Abstract This dissertation specifically focused on assessing the variation in asphalt mix properties at non-standard test temperatures using standard and modified bitumen’s. How asphalt concrete pavement performs in adverse climates has been cause for concern for decades. Polymer ...

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Internal Structure Features of Asphalt Mixture for Field ...

Internal Structure, Core Samples, Contact Points. 1. Introduction A review of the literature on this subject indicates that the investigations of hot mix asphalt (HMA) have mainly concentrated on the macroscopic behavior of the material based on the assumption that the mixture is homogeneous. This assumption is mainly as

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(PDF) Investigation of asphalt mixture permanent ...

Investigation of asphalt mixture permanent deformation based on three-dimensional discrete element method ... of aggregate properties and internal structure on fracture in asphalt mixtures, J ...

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Discrete Element Simulation of the Internal Structures of ...

This study investigated the effects of internal structure on the anisotropic creep behavior of asphalt mixture based on user-defined three-dimensional (3-D) micromechanical discrete element method ...

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A Micro-Scale Investigation on the Behaviors of Asphalt ...

A Micro-Scale Investigation on the Behaviors of Asphalt Mixtures under Freeze-Thaw Cycles Using ... such as the alternation of freezing and thawing cycles may alter the internal structure and may consequently result in the initial damage of asphalt pavement [3,4]. Therefore, to study the distress ... Asphalt Mixture Preparation and Experimental ...

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Investigation of Low Temperature Cracking in Asphalt

Investigation of Low Temperature Cracking in Asphalt Pavements ... of pavements and proposes a method for estimating the coefficient based on the thermo-volumetric properties of the asphalt binder and the internal structure of the mixture. ... The research team conducted a detailed study on the effect of aggregate internal structure and mixture ...

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Investigation of Low Temperature Properties of Asphalt ...

average size distribution of aggregates for the 17 asphalt mixtures investigated were found to be very similar despite of the varying amount of recycled material contained. Detailed information on the internal structure of asphalt mixture was investigated by estimating the

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Investigation of Energy-Based Crack Initiation Threshold ...

May 26, 2016  Investigation of Energy-Based Crack Initiation Threshold from Meso-Scale Asphalt Concrete Response ... is used to acquire the internal structure of an asphalt concrete mixture while Digital Image Processing (DIP) techniques is used to segment and analyze the different phases present in the mixture. ... this study also shows the potential of the ...

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A study on fatigue damage of asphalt mixture under ...

Jun 24, 2017  The aim of this paper is investigating the microstructural characteristics of asphalt mixture under different compaction powers. In order to achieve this aim, a test track was built to provide asphalt mixture specimens and X-ray computed tomography (XCT) device was used to scan the internal structure. The aggregate particles and air-voids were extracted using Digital Image

Get Price

Discrete Element Analysis of the Influences of Aggregate ...

Jan 01, 2010  Increased loads on hot-mix asphalt (HMA) pavements have necessitated the development of new-generation asphalt mixture designs that rely on stone-on-stone contact among coarse aggregates in resisting and distributing applied loads. These stone-on-stone contacts, however, promote localized internal stresses that could cause aggregate fracture.

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Characterization of Air Void in Porous Asphalt Mixture ...

Jul 12, 2021  In characterizing the internal structure of asphalt concretes, the nondestructive techniques based on X-ray computed tomography (CT) and image analysis provided insight into the internal structure characteristics of asphalt mixture, such as the reconstruction of asphalt concrete [29, 30], AV content and distribution [7, 31–33], and damage ...

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Effects of Internal Structure on Anisotropic Creep ...

May 10, 2018  Moreover, applying the load in the long-axis direction of void orientation could result in relatively small creep strain. It is necessary to take into full consideration the effects of internal structures on the anisotropic creep behavior of asphalt mixtures during material design and field construction to improve the pavement performance.

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Effect of Freeze-Thaw Cycles on the Internal Structure and ...

Jul 19, 2017  In this study, we investigate the spatial distributions of the internal structures in semirigid base materials (SRBMs) and explore their effect on the service performance of the SRBMs. X-ray computed tomography (X-ray CT) was used to conduct a spatial voids structure analysis. Three variates were selected to study the factors influencing the spatial distributions of the internal structures ...

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Discrete Element Method (DEM) Analyses of Hot-Mix Asphalt ...

Asphalt mixture compaction is an important procedure of asphalt mixture construction and can significantly affect the performance of asphalt pavement. In this paper, an open source DEM code was applied to simulate the compaction of hot-mix asphalt (HMA) with the Superpave gyratory compactor. The asphalt mixture compaction process, air voids distribution, internal coarse aggregate structure ...

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Investigation on Deicing Property of Steel Wool Fiber ...

In order to effectively solve the traffic safety problem caused by snow and ice covering the pavement in winter, steel wool fibers with different length and content were adopted in asphalt mixture to investigate its deicing performance. The deicing principle of steel wool fiber asphalt mixture by induction heating was expounded. Effects of different ice thicknesses, output currents, and ...

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