Effects of the morphological characteristics of mineral powder fillers on the rheological properties of asphalt mastics at high and medium temperatures

2019 ◽  
Vol 348 ◽  
pp. 33-42 ◽  
Author(s):  
Baodong Xing ◽  
Weiyu Fan ◽  
Chuanyi Zhuang ◽  
Chengduo Qian ◽  
Xiaobo Lv
Keyword(s):  
Rheological Properties ◽  
Morphological Characteristics ◽  
Asphalt Mastics ◽  
Mineral Powder

Effect of Filler Type and Content on the Rheological Properties of Asphalt Mastics

2021 ◽  
pp. 591-597
Author(s):  
Jayvant Choudhary ◽  
Brind Kumar ◽  
Ankit Gupta
Keyword(s):  
Rheological Properties ◽  
Asphalt Mastics

Influence of the Parameters of Formulation on the Fresh Properties of Cementing Materials with Admixtures

2012 ◽  
Vol 730-732 ◽  
pp. 456-461 ◽  
Author(s):  
Abdelaziz Boudchicha ◽  
Mustapha Cheikh Zouaoui ◽  
Jean Louis Gallias
Keyword(s):  
Rheological Properties ◽  
Morphological Characteristics ◽  
Experimental Methodology ◽  
Mineral Admixtures ◽  
Fresh Properties ◽  
Absolute Volume ◽  
Solid Phases ◽  
The Absolute ◽  
Volume Substitution

The use of mineral admixtures in cementing materials can generate significant modifications in the fresh and hardened mixes, which can depend on the parameters of formulation. To study the influence of the parameters of formulation on the rheological properties of cementing materials with admixtures, we used seven admixtures different by their mineralogical natures, their fineness, and their morphological characteristics, two types of cements and two types of superplasticizers. The experimental methodology used is based on the volume substitution of the cement by admixtures in mixtures whose the absolute volume of the solid phases and workability are preserved constant. The main results achieved showed that the rheological properties of the fresh mortars with admixtures are very influenced by the amount and the properties of admixtures, and the nature of the superplasticizer, but depended rather on the nature of the cement used.

High Temperature Rheological Characteristics of Brucite Fiber Modified Asphalt Mastics

2011 ◽  
Vol 250-253 ◽  
pp. 703-706
Author(s):  
Bo Wen Guan ◽  
Shuan Fa Chen ◽  
Rui Xiong ◽  
Yan Ping Sheng ◽  
Li Li Ma
Keyword(s):  
High Temperature ◽  
Rheological Properties ◽  
Newtonian Fluid ◽  
Rheological Characteristics ◽  
Modified Asphalt ◽  
Asphalt Mastics

The rheological properties of brucite fiber asphalt mastics are studied by the Brookfield viscosity test in this paper. The results show that at 105°C and 120°C, brucite fiber asphalt mastics shows the characteristics of non-Newtonian fluid. At 135°C and 150°C, it shows the characteristics of Newtonian fluid gradually. When the temperature is higher than 150°C, the asphalt mastics has fully manifested the characteristics of Newtonian fluid. The viscosity increases with the increasing of the dosage of brucite fiber. The value of ZSV increases with the increasing of the dosage of brucite fiber. According to the change law of ZSV, the anti-rutting performance of asphalt mastics is improved by the addition of brucite fiber.

The Changed of Behaviour of MR Fluid in MR Damper after a Long-Term Operation

2018 ◽  
Vol 775 ◽  
pp. 171-176 ◽  
Author(s):  
Dewi Utami ◽  
Saiful Amri Mazlan ◽  
Ubaidillah ◽  
Irfan Bahiuddin ◽  
Fitrian Imaduddin ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Operation Mode ◽  
Dynamic Test ◽  
Morphological Characteristics ◽  
Mr Damper ◽  
Test Machine ◽  
Mr Fluid ◽  
Term Operation ◽  
Valve Operation

Magnetorheological (MR) fluid devices are now applied in various applications. Although a lot of studies have been discussed in long-term implementation of MR devices, only few studies have concerned on MR fluid application in valve operation mode, such as at MR valve. The experiments were conducted on a dynamic test machine in a custom MR damper with meandering MR valve. The experiment test was applied at continuous-load in long term-operation with parameters of 20 mm length of stroke, 0.4 Hz of frequency, 0.5 A of applied current and 175,000 cycles. The rheological properties of MR fluid were characterized using rotational and oscillatory shear rheometer. The result showed that the rheological properties of MR fluid changed after applied in long-term operation. The changed of MR fluid also investigated through morphological characteristics using SEM and EDX.

scholarly journals Characteristics and Mechanisms of Asphalt–Filler Interactions from a Multi-Scale Perspective

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2744 ◽  
Author(s):  
Wenyi Xu ◽  
Xin Qiu ◽  
Shanglin Xiao ◽  
Haojue Hong ◽  
Feng Wang ◽  
...  
Keyword(s):  
Volume Fraction ◽  
Great Influence ◽  
Morphological Characteristics ◽  
Morphological Properties ◽  
Mineral Filler ◽  
Adsorption Effect ◽  
Asphalt Mastic ◽  
Interaction Behavior ◽  
Asphalt Mastics ◽  
Mineral Fillers

Asphalt mastic plays an important role in asphalt mixtures for pavement engineering. Understanding the asphalt–filler interaction behavior is essential to improve the pavement performance of asphalt mastics. The objective of this paper was to evaluate the asphalt–filler interaction ability based on macro-rheological measurements and to investigate the asphalt–filler interaction mechanism associated with microstructural characteristics of asphalt mastics. First, the asphalt–filler interaction was characterized using macro-rheological features of asphalt mastics based on dynamic shear rheometer (DSR) tests. Second, the physico-chemical interaction between the asphalt and filler was qualitatively evaluated using a Fourier transform infrared (FTIR) spectrometer. Third, the asphalt–filler interaction behavior was investigated in terms of the micro-morphological properties of mineral fillers and asphalt mastics by conducting scanning electron microscopy (SEM) and atomic force microscope (AFM) tests. Finally, the grey relational analysis (GRA) was employed to identify the correlation between the properties of mineral fillers and the macro–micro performances of asphalt mastics. The results show that a higher content of alkaline mineral filler within the critical volume fraction range produced a greater interaction ability between the asphalt and filler. The asphalt–filler interaction is mainly a physical action since no obvious new adsorption peaks appeared in the FTIR spectrum. The micro-morphological characteristics of asphalt mastic mainly depended on the adsorption effect of mineral fillers on polar fractions and the dispersion effect of mineral fillers on wax crystals in the asphalt binder. Based on the results of the GRA, the acidity and content of mineral fillers exhibited a great influence on the micro-morphological and macro-rheological characteristics of asphalt mastics, and the specific surface area of the mineral filler exerted a significant influence on the asphalt–filler interaction ability. Furthermore, the K-B- δ index was more appropriate for evaluating the asphalt–filler interaction ability.

scholarly journals Influence of Diatomite and Mineral Powder on Thermal Oxidative Ageing Properties of Asphalt

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Yongchun Cheng ◽  
Jinglin Tao ◽  
Yubo Jiao ◽  
Qinglin Guo ◽  
Chao Li
Keyword(s):  
Retention Rate ◽  
Asphalt Mixture ◽  
Deformation Energy ◽  
Creep Properties ◽  
Before And After ◽  
Asphalt Mastics ◽  
Mineral Powder ◽  
Low Temperature Creep ◽  
Oxidative Ageing ◽  
Better Than

Ageing of asphalt affects the performances of asphalt pavement significantly. Therefore, effects of diatomite and mineral powder on ageing properties of asphalt were investigated systematically in order to improve the antiageing property of mixture. Thin film oven test (TFOT) was used to conduct the short term ageing in laboratory. Softening points, penetrations, force ductility, low temperature creep properties, and viscosities of asphalt mastics were tested before and after TFOT, respectively. Results indicated that percent retained penetration (PRP) increased with the increasing of fillers. Increment of softening point (ΔT), ductility retention rate (DRR), deformation energy ageing index (JAI), and viscosity ageing index (VAI) of asphalt mastics nonlinearly decreased with the increasing of fillers. Ageing of asphalt was reduced by diatomite and mineral powder. And the antiageing effect of diatomite was better than that of mineral powder as a result of its porous structure. It is suggested that the mineral powder could be reasonably replaced by diatomite in order to reduce thermal oxidative ageing of asphalt mixture. The optimal content of diatomite 12.8% is also suggested for engineering.

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