Influence of aggregate chemical composition on the demulsification rate of emulsified asphalt

Efficient demulsification is vital for the application of emulsified asphalt in road construction. In this paper, the effects of the main chemical components of the aggregates (CaCO3, MgO, Fe2O3, SiO2, Al2O3) on the demulsification process of emulsified asphalt were studied by experiment and simulation using a Gompertz model. The findings indicate that the surface energy, specific surface area, and pH of the chemical components of the aggregates are the most important factors influencing the demulsification speed of the emulsified asphalt. The choice of the aggregate’s main chemical components can accelerate demulsification speed, with the acceleration effect of Al2O3 on anionic (SDBS) emulsified asphalt and MgO on cationic (STAC) emulsified asphalt both reaching 60%. The fit between the Gompertz model and the experimental viscosity curve is greater than 0.93, which verifies the utility of using the Gompertz approach for studying emulsified asphalt-aggregate mortar viscosity changes. A demulsification evaluation function φ ( t ) of emulsified asphalt is proposed based on the parameters of the Gompertz model. When φ ( t ) is close to 1, the emulsified asphalt-aggregate mortar is fully demulsified, and setting φ ( t ) = 1 allows the demulsification time of the emulsified asphalt-aggregate mortar to be calculated from the Gompertz model parameters.

[1]  A. M. Savel’ev,et al.  Mechanism of Electric Charging of Aluminum Oxide Particles When Burning Solid Fuels , 2022, Journal of Propulsion and Power.

[2]  Minhao Xiao,et al.  Characterizing Surface Porosity of Porous Membranes via Contact Angle Measurements , 2022, Journal of Membrane Science Letters.

[3]  Rong Luo,et al.  Investigation on the relationship between the surface texture index and the surface free energy of aggregate , 2022, Construction and Building Materials.

[4]  Rong Luo,et al.  Evaluation of interaction between emulsified asphalt and mineral powder using rheology , 2022, Construction and Building Materials.

[5]  Selinah Busang,et al.  Influence of aggregates properties on microstructural properties and mechanical performance of asphalt mixtures , 2022, Construction and Building Materials.

[6]  M. Singh,et al.  Contact angle and surface wettability measurement , 2022, Characterization of Polymers and Fibres.

[7]  E. Macau,et al.  Gompertz model in COVID-19 spreading simulation , 2021, Chaos, Solitons & Fractals.

[8]  Alime Çıtak,et al.  Using contact angle measurement technique for determination of the surface free energy of B-SBA-15-x materials , 2021, International Journal of Adhesion and Adhesives.

[9]  Zhenjun Wang,et al.  Strength improvement of cement emulsified asphalt mixture through aggregate gradation design , 2021 .

[10]  Kuanghuai Wu,et al.  Study on the influence of aggregate strength and shape on the performance of asphalt mixture , 2021 .

[11]  T. Zheng,et al.  Preparation and Characterization of a New Negatively Charged PTFE Fiber Membrane for Separating Oil-in-water Emulsions Containing Cationic Emulsifiers , 2021, Fibers and Polymers.

[12]  L. Sheng,et al.  Study on clogging mechanisms of constructed wetlands from the perspective of wastewater electrical conductivity change under different substrate conditions. , 2021, Journal of environmental management.

[13]  Hong Wu,et al.  Factors influencing the performance of cement emulsified asphalt mortar – A review , 2021 .

[14]  A. Shen,et al.  Effect of different coarse aggregate surface morphologies on cement emulsified asphalt adhesion , 2020 .

[15]  Zhenjun Wang,et al.  Quantitative evaluation of cement emulsified asphalt mortar and aggregate adhesion performance with dynamic mechanical analysis , 2020 .

[16]  Yue Zhongqi,et al.  Research status and analysis of stabilization mechanisms and demulsification methods of heavy oil emulsions , 2020, Energy Science & Engineering.

[17]  M. Vigneshkumar,et al.  Multi-objective optimization of process parameters in dry sliding wear characteristics of Al/sic composites using Taguchi grey relation analysis , 2020 .

[18]  Baoju Liu,et al.  Factors influencing the demulsification time of asphalt emulsion in fresh cement emulsified asphalt composite binder , 2020, Road Materials and Pavement Design.

[19]  N. Harshavardhana,et al.  Multi response optimization of setting input variables for getting better cylindrical cups in sheet metal spinning of Al 6061 – T6 by Grey relation analysis , 2020 .

[20]  Yan Li,et al.  Experimental study on demulsification speed of emulsified asphalt based on equivalent surface area principle , 2020, E3S Web of Conferences.

[21]  Zhenjun Wang,et al.  Effect of cement and emulsified asphalt contents on the performance of cement-emulsified asphalt mixture , 2019, Construction and Building Materials.

[22]  S. Caro,et al.  Impact of the chemical composition of aggregates on the adhesion quality and durability of asphalt-aggregate systems , 2019, Construction and Building Materials.

[23]  K. Appaiah,et al.  A conditional justification for the determination of surface energy of solids using contact angle methods , 2019, Materials Chemistry and Physics.

[24]  Sang-Gil Ryu,et al.  Optimum design of a large area, flexure based XYθ mask alignment stage for a 12-inch wafer using grey relation analysis , 2019, Robotics Comput. Integr. Manuf..

[25]  D. Satoh,et al.  Monotonic decrease of upper limit estimated with Gompertz model for data described using logistic model , 2018, Japan Journal of Industrial and Applied Mathematics.

[26]  Tao Ma,et al.  Study on the Effect of Demulsification Speed of Emulsified Asphalt based on Surface Characteristics of Aggregates , 2018, Materials.

[27]  Zhanping You,et al.  Effect of tack coat dosage and temperature on the interface shear properties of asphalt layers bonded with emulsified asphalt binders , 2017 .

[28]  Zhenjun Wang,et al.  Effects of aggregate gradations and binder contents on engineering properties of cement emulsified asphalt mixtures , 2017 .

[29]  Shaopeng Wu,et al.  Effect of Material Composition and Environmental Condition on Thermal Characteristics of Conductive Asphalt Concrete , 2017, Materials.

[30]  A. Raposeiras,et al.  Development of an estimative model for the optimal tack coat dosage based on aggregate gradation of hot mix asphalt pavements , 2016 .

[31]  A. Sha,et al.  Greenhouse Gas Emissions from Asphalt Pavement Construction: A Case Study in China , 2016, International journal of environmental research and public health.

[32]  Shenwen Fang,et al.  Effect of Rheology Properties of Oil/Water Interface on Demulsification of Crude Oil Emulsions , 2015 .

[33]  Zhang Jiu-pen.  Evaluation of asphalt demulsification and viscosity of modified asphalt emulsion mortar based on Gompertz model , 2015 .

[34]  Yue-yue Li,et al.  Effect of Emulsified Asphalt Content on Mechanical Property of Cement and Emulsified Asphalt Mortar , 2014 .

[35]  Surong Jin,et al.  Synthesis and Application Research of op-10/ Cationic Surfactant Composite Asphalt Emulsifier , 2013 .

[36]  John C. Berg,et al.  An Introduction to Interfaces & Colloids: The Bridge to Nanoscience , 2009 .

[37]  Oskar Esping,et al.  Effect of limestone filler BET(H2O)-area on the fresh and hardened properties of self-compacting concrete , 2008 .

[38]  Deng Ju-Long,et al.  Control problems of grey systems , 1982 .

[39]  E. W. Washburn.  The Dynamics of Capillary Flow , 1921 .