Towards the potential usage of eggshell powder as bio-modifier for asphalt binder and mixture: workability and mechanical properties

2021 ◽  
pp. 1-13
Author(s):  
Jiandong Huang ◽  
G. Shiva Kumar ◽  
Jiaolong Ren ◽  
Yuantian Sun ◽  
Yijiang Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Asphalt Binder

Experimental Study on Epoxy Asphalt Binder

2010 ◽  
Vol 168-170 ◽  
pp. 916-919
Author(s):  
Ke Fei Liu
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Asphalt Binder ◽  
Physical And Mechanical Properties ◽  
Technical Requirement ◽  
Basic Requirement ◽  
Application Process ◽  
Epoxy Asphalt ◽  
Steel Deck ◽  
Thermosetting Epoxy

Epoxy asphalt has fundamentally changed the thermoplastic of asphalt and endowed the asphalt with excellent physical and mechanical properties. This paper analyses the developing technical requirement of thermosetting epoxy asphalt and points out its main problems during preparation and application process. Aiming at the steel deck paving characteristics, the author has independently developed epoxy asphalt binder and tested its performances, the results have showed that this binder can meet the basic requirement of various pavings, and its further research are in process.

scholarly journals A Comprehensive Evaluation of Rejuvenator on Mechanical Properties, Durability, and Dynamic Characteristics of Artificially Aged Asphalt Mixture

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1554 ◽  
Author(s):  
Pan Pan ◽  
Yi Kuang ◽  
Xiaodi Hu ◽  
Xiao Zhang
Keyword(s):  
Mechanical Properties ◽  
Dynamic Characteristics ◽  
Comprehensive Evaluation ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Physical Property ◽  
Fatigue Property ◽  
Physical Test ◽  
Aged Asphalt

In this study, the aged asphalt binder and mixture were laboratory prepared through short-term ageing testing and long-term ageing testing. Firstly, the effect of rejuvenator on physical properties of aged asphalt binders was investigated. In addition, a series of laboratory tests were performed to evaluate the influence of ageing and rejuvenator content on the mechanical properties, durability and dynamic characteristics of asphalt mixtures. Physical test results of asphalt binder testified that rejuvenator used can efficiently recover the aged asphalt binder. However, the effect of ageing and rejuvenator content exhibits different trends depending on the physical property tests conducted. Moreover, artificially aged asphalt mixture with rejuvenator has better ability to resist moisture damage and ravelling. In addition, the ITSR value is more suitable to evaluate the moisture susceptibility for asphalt recycling. Although rejuvenator improves the thermal cracking resistance and fatigue property of aged asphalt mixture, rejuvenated mixture shows greater modulus and inferior ability to resist reflective cracking than the unaged mixture. Moreover, rejuvenated mixture shows less dependence on frequency at high temperature regions and stronger dependence at low temperature regions compared to unaged and long-term aged mixtures.

scholarly journals Value-Added Application of Waste Rubber and Waste Plastic in Asphalt Binder as a Multifunctional Additive

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1280 ◽  
Author(s):  
Tianqing Ling ◽  
Ya Lu ◽  
Zeyu Zhang ◽  
Chuanqiang Li ◽  
Markus Oeser
Keyword(s):  
Mechanical Properties ◽  
Fatigue Life ◽  
Waste Treatment ◽  
Treatment Approach ◽  
Asphalt Binder ◽  
Value Added ◽  
Scanning Calorimetry ◽  
Multifunctional Additive ◽  
Waste Plastic ◽  
Waste Rubber

The feasibility and effectivity of recycling waste rubber and waste plastic (WRP) into asphalt binder as a waste treatment approach has been documented. However, directly blending WRP with asphalt binder brings secondary environmental pollution. Recent research has shown that the addition of WRP into asphalt binder may potentially improve the workability of asphalt binder without significantly compromising its mechanical properties. This study evaluates the feasibility of using the additives derived from WRP as a multifunctional additive which improves both the workability and mechanical properties of asphalt binder. For this purpose, WRP-derived additives were prepared in laboratory. Then, three empirical characteristics—viscosity, rutting factor, fatigue life were analyzed. Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) were employed to evaluate the effect of WRP-derived additive on the workability and chemical and mechanical properties of base binder. The dispersity of WRP-derived additive inside asphalt binder was also characterized using fluorescence microscope (FM). Results from this study showed that adding WRP-derived additive increases the workability of base binder. The WRP-derived additive appears positive on the high- and low- temperature performance as well as the fatigue life of base binder. The distribution of the WRP-derived additive inside base binder was uniform. In addition, the modification mechanism of WRP-derived additive was also proposed in this paper.

scholarly journals Kinetic Viscoelasticity of Crosslinking Epoxy Asphalt

2019 ◽  
Vol 2673 (3) ◽  
pp. 551-560 ◽  
Author(s):  
Panos Apostolidis ◽  
Xueyan Liu ◽  
Martin van de Ven ◽  
Sandra Erkens ◽  
Tom Scarpas
Keyword(s):  
Mechanical Properties ◽  
Asphalt Binder ◽  
Crosslinking Density ◽  
Asphalt Binders ◽  
Experimental Program ◽  
Model Parameters ◽  
Epoxy Asphalt ◽  
Pavement Structures ◽  
Chemical Hardening ◽  
Modified Binder

Epoxy modification of asphalt binders has been recognized as a very effective technology to alter the chemistry of asphaltic materials in such a way that long-lasting pavement structures can be designed. However, the phenomena that are involved to build up the physico-mechanical properties of epoxy asphalt systems are still unknown. The focus of this paper is on understanding the link between chemistry and the mechanical properties of epoxy asphalt binders during the thermo-irreversible process of chemical hardening. For this purpose, a constitutive model for predicting the evolution of cure-induced stresses in epoxy asphalt binders is proposed, and an experimental program was developed to determine the model parameters. The cure dependency of physico-mechanical parameters of modified binder was obtained and imported into the model to simulate the build-up of material properties during (non-)isothermal hardening of epoxy asphalt binder. The model is implemented in a commercially finite element tool by coupling the chemical, thermal, and mechanical phenomena with multi-physics strategies, and the results are analyzed to identify the influence of different heating conditions on the crosslinking density and subsequently on stress build-up. It was found that the amount of stress build-up during curing was strongly dependent on the heating conditions, and a higher rate of stress build-up was observed at higher applied temperatures. In other words, the processing conditions during in-plant material production or in-field manufacturing of structures made by epoxy asphalt systems affect the material hardening and subsequently the desired functionalities of pavement structures.

scholarly journals Thermo-mechanical properties improvement of asphalt binder by using methylmethacrylate/ethylene glycol dimethacrylate

2016 ◽  
Vol 25 (3) ◽  
pp. 397-407 ◽  
Author(s):  
A.A. Ragab ◽  
Reem K. Farag ◽  
Usama F. Kandil ◽  
M. El-Shafie ◽  
A.M.M. Saleh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ethylene Glycol ◽  
Asphalt Binder ◽  
Ethylene Glycol Dimethacrylate ◽  
Glycol Dimethacrylate

scholarly journals Influence of Different Types of Emulsifiers on Properties of Emulsified Asphalt Binder and Its Evaporation Residue by Molecular Dynamics Simulation

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Ying-feng Wu ◽  
Xin Qu
Keyword(s):  
Mechanical Properties ◽  
Asphalt Binder ◽  
Evaporation Residue ◽  
Dynamics Simulation ◽  
Asphalt Binders ◽  
Adhesion Behavior ◽  
Effective Role ◽  
Dodecyl Benzene Sulfonate ◽  
Emulsified Asphalt ◽  
Evaporation Residues

There is an important role in the properties of emulsified asphalt binder and its evaporation residue about emulsifier, which has been confirmed by experiment and chemical tests. However, there is little research about the emulsifier at microperspective. Therefore, the influence of two kinds of emulsifiers, a typical cationic emulsifier (dodecyl benzene sulfonate) and a typical anionic emulsifier (dodecyl primary amine), on technical properties of emulsified asphalt binder and its evaporation residues such as store stability, workability, breaking behavior, and mechanical properties are investigated using a microapproach. Results show that there is an effective role in the storage stability, workability, and demulsification of emulsified asphalt binder about cationic emulsifier compared with anionic emulsifier. The anionic emulsifier makes the density of evaporation residue larger. However, the mechanical properties of anionic emulsified asphalt evaporation residue are conversely smaller compared with the cationic emulsified asphalt evaporation residue. The adhesion behavior results have confirmed that the anionic emulsified asphalt evaporation residue has a negative adhesion with aggregate due to its anion. The mechanism of the different emulsifiers on asphalt binders and their evaporation residue is explored at a microscale to help us to understand emulsified asphalt binder and its evaporation residue more in depth.

scholarly journals Mechanical Properties of the Interfacial Bond between Asphalt-Binder and Aggregates under Different Aging Conditions

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1221
Author(s):  
Xiaorui Zhang ◽  
Juntian Wang ◽  
Xinxing Zhou ◽  
Zhuqiu Zhang ◽  
Xiaobing Chen
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Asphalt Binder ◽  
Adhesive Force ◽  
Asphalt Mixtures ◽  
Interfacial Bond ◽  
Adhesive Properties ◽  
Study Results ◽  
Aging Conditions ◽  
Detrimental Impact

Aging has a detrimental impact on the interfacial interaction and bonding between asphalt-binder and aggregates, which influence ultimately on the performance of asphalt mixtures and pavements. Evaluation of the mechanical properties of the interface between the asphalt-binder and aggregates has thus become a hot research topic, particularly as a function of aging. In this study, the interfacial tensile strength, compressive strength, elastic modulus, and interfacial recovery energy were measured and quantified using molecular dynamic simulation. Whilst the free volume of the asphalt mixtures exhibited sensitivity to aging, the interfacial tensile strength decreased with an increase in the degree of aging. In general, the mechanical properties of the asphalt-binder-aggregate interface were found to be significantly dependent on the aggregate type. Furthermore, the study results indicated that interfacial recovery energy is a key characteristic property for characterizing the interfacial adhesive force within asphalt mixtures. Overall, the study of mechanical properties of the asphalt-binder and aggregate interface, as presented in this paper, contributes to quantifying the adhesive properties and improving the performance of asphalt mixtures.

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