Anti-Fatigue Performance Of Warm-Mixed Rubber Powder Modified Asphalt Mixture Based On The Dic Technique

2022 ◽  
Author(s):  
Jiangsan HU ◽  
Lan WANG ◽  
Xin LUO
Keyword(s):  
Asphalt Mixture ◽  
Fatigue Performance ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
Dic Technique

scholarly journals Road performance of tourmaline/rubber powder modified asphalt mixture

2019 ◽  
Vol 304 ◽  
pp. 052129
Author(s):  
Hao Fu ◽  
Qian Chen ◽  
Zhi Song ◽  
Xudang Xiao ◽  
Zhentong Fan
Keyword(s):  
Asphalt Mixture ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
Road Performance

scholarly journals Rutting and Fatigue Performance Evaluation of Qingchuan Rock Modified Asphalt Mixture

2016 ◽  
Vol 10 (1) ◽  
pp. 511-523 ◽  
Author(s):  
Li Limin ◽  
He Zhaoyi ◽  
Liu Weidong ◽  
Hu Cheng ◽  
Liu Yang
Keyword(s):  
Fatigue Damage ◽  
Resilient Modulus ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Fatigue Performance ◽  
Raw Material ◽  
Loading Test ◽  
Modified Asphalt ◽  
Tensile Fatigue ◽  
Dynamic Creep

To solve the problem of rutting and fatigue damage to asphalt pavement, rutting and fatigue performances of Qingchuan rock asphalt modified asphalt were studied, based on the dynamic shear rheometer test, the dynamic creep test, the rutting test, the indirect tensile fatigue test, the small-sized acceleration loading test, the compressive resilient modulus test, the BISAR3.0 Program and the rutting calculation method based on dynamic finite element method. The results indicate that Qingchuan rock asphalt modifier can obviously improve the anti-fatigue performance and anti-rutting performance of asphalt pavement. Taking the anti-rutting performance and the raw-material price of asphalt into consideration, a rock asphalt optimum content ranging from 5% to 8% is suggested. Qingchuan rock asphalt is a good modifier to solve the rutting and the fatigue damage of asphalt pavement.

scholarly journals Research on the Influence of Nanocarbon/Copolymer SBS/Rubber Powder Composite Modification on the Properties of Asphalt and Mixtures

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Wenhui Zhao ◽  
Xiangbing Xie ◽  
Guanghui Li ◽  
Jiuguang Geng ◽  
Meng Bao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Powder Composite ◽  
High Temperature Stability ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
Modification Process ◽  
Low Temperature Cracking ◽  
Surface Modified

To expand the application range of modified asphalt and mixtures and effectively reduce the aggregation of nanomaterials in asphalt, nanocarbon/styrene butadiene styrene (SBS)/rubber powder composite-modified asphalt is proposed. This paper presents a laboratory study on the performance of nanocarbon/copolymer SBS/rubber powder composite-modified asphalt, and nanocarbon particles modified by titanate coupling agents as modifiers are selected. The nanocarbon/copolymer SBS/rubber powder composite-modified asphalt was prepared by a high-speed shearing method. The physical properties and rheological performance were assessed using ductility tests, softening point tests, penetration tests, dynamic shear rheometer (DSR) tests, and bending beam rheometer (BBR) tests. Furthermore, the mixture properties, including the high-temperature stability, low-temperature cracking resistance, moisture stability, and freeze-thaw splitting, were evaluated in the laboratory. The micromorphology of the base asphalt and composite-modified asphalt was examined by scanning electron microscopy (SEM), and the reactions between the modifiers and AH-70 base asphalt were studied by Fourier transform infrared spectroscopy (FTIR). The results reveal that the surface-modified nanocarbon and rubber powder additives substantially increased the softening point and penetration index of the base asphalt, with little obvious influence on the low-temperature performance. In addition, when nanocarbon/copolymer SBS/rubber powder composite-modified asphalt was used, the high-temperature stability and low-temperature cracking resistance of the nanocarbon/copolymer SBS/rubber powder composite-modified asphalt mixture were approximately 1.3 times those of the nanocarbon/rubber powder asphalt mixture. In terms of the micromorphology and reaction, the addition of the nanocarbon can increase the compatibility between the base asphalt and rubber powder, and then the addition of copolymer SBS can improve the structure of nanocarbon (after surface modification)/rubber powder-modified asphalt to form a stable network. Moreover, the physical reaction plays the dominant role in the modification process for the rubber powder and base asphalt, and chemical reactions occur in the modification process for the surface-modified nanocarbon and base asphalt.

scholarly journals Laboratory Study on the Fatigue Resistance of Asphaltic Concrete Containing Titanium Dioxide

2018 ◽  
Vol 34 ◽  
pp. 01021
Author(s):  
Rosnawati Buhari ◽  
Mohd Ezree Abdullah ◽  
Mohd Khairul Ahmad ◽  
Saiful Azhar Tajudin ◽  
Siti Khatijah Abu Bakar
Keyword(s):  
Titanium Dioxide ◽  
Asphalt Mixture ◽  
Performance Testing ◽  
Fatigue Performance ◽  
Fatigue Properties ◽  
Modified Asphalt ◽  
Tensile Fatigue ◽  
Asphalt Mix ◽  
Rotational Viscosity ◽  
Indirect Tensile

This study aims to evaluate the fatigue performance of modified asphalt mixture using Indirect Tensile Fatigue Test. Titanium Dioxide (TiO2) powder in a form of rutile was used for producing asphalt concrete with lower mixing and compaction temperature compared to conventional hot mix asphalt without reducing its physical and mechanical also resistance to fatigue. The characteristic of the asphalt and modified asphalt was evaluated using penetration test, softening test and rotational viscosity test. Titanium dioxide of 2%, 4%, 6%, 8% and 10% by weight of asphalt has been incorporated into unaged 80/100 asphalt mix in order to improvise its performance and to fulfill the objectives of this experimental study. As a result, TiO2 as an additive is potential to decrease the penetration and increasing the softening point of the asphalt. In terms of fatigue performance testing, addition TiO2 additive does help in improving the fatigue properties as it shows greater result than the control asphalt. In conclusion, TiO2 is great in improving fatigue properties.

Road Performance Study on Gap-Graded and Dense-Graded of Rubber Powder Particles Modified Asphalt Mixture

2014 ◽  
Vol 900 ◽  
pp. 499-504
Author(s):  
Yu Mao ◽  
Yang Liu ◽  
Pei Wen Hao ◽  
Hai Nian Wang
Keyword(s):  
Process Parameters ◽  
Performance Indicators ◽  
Asphalt Mixture ◽  
Performance Study ◽  
Airborne Dust ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
The Road ◽  
Powder Particles ◽  
Road Performance

A new type of rubber powder particle modifier can be produced by adding some performance improvement additives into the normal 40-60 mesh rubber powder and re-granulation, it proved to have better performances and less airborne dust, mixing well with base asphalt. Researching the performance indicators of rubber powder particles modified asphalt under different process parameters through the adjustment of shear temperature, shear rate, shear time and dosage of rubber powder in the process of producing rubber powder particles modified asphalt, the optimal process parameters was determined, and the road performance indicators of the modified asphalt mixture has been verified.

scholarly journals Effect of Weather Aging on Viscoelasticity and Fatigue Performance of Asphalt Mastic

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6163
Author(s):  
Gang Xu ◽  
Yixin Zhou ◽  
Yu Zhu ◽  
Rui Wang ◽  
Xianhua Chen
Keyword(s):  
Fatigue Life ◽  
High Strain ◽  
Asphalt Mixture ◽  
Strain Level ◽  
Fatigue Performance ◽  
Modified Asphalt ◽  
Asphalt Mastic ◽  
Sbs Modified Asphalt ◽  
The Impact

The long-term effect of climate factors, such as sunlight, oxygen, and water, leads to the performance degradation of the asphalt mastic, which is the binding part in the asphalt mixture. It is not conducive to satisfy the long-term performance requirements of long-life asphalt pavement. In this study, five kinds of base asphalt mastic and styrene-butadiene-styrene (SBS) modified asphalt mastic were prepared with the filler-asphalt ratio of 0.6, 0.8, 1.0, 1.2, and 1.4. The indoor simulated weather aging tests were carried out considering multi-factors including sunlight, oxygen, and water. The master curves of the complex shear modulus and phase angle of the asphalt mastic with different aging degrees were obtained by the frequency sweep test. The curves of fatigue damage characteristics and fatigue life were fitted based on the viscoelastic continuum damage (VECD) model. The influence of weather aging on the viscoelasticity and fatigue performance of asphalt mastic were analyzed. Results indicated that the effect of weather aging increases the elastic component and decreases the viscous component. The fatigue performance of SBS modified asphalt mastic was better than that of base asphalt mastic. As the aging degree deepens, the brittle failure characteristics of asphalt mastic with a higher filler–asphalt ratio were more obvious. The base asphalt mastic becomes more sensitive to the strain level due to weather aging, and its fatigue life increased under the low strain loading and decreased under the high strain loading. The fatigue performance of SBS modified asphalt mastic was less sensitive to the strain level. The fatigue life reduced after aging under low and high strain load. Taking the impact of weather aging on the fatigue performance into consideration, the optimal filler–asphalt ratios of the base asphalt mastic SBS modified asphalt mastic are 1.0 and 1.2, respectively.

scholarly journals Microstructure and Meso-Mechanical Properties of Asphalt Mixture Modified by Rubber Powder under a Multi-Scale Effect

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1321
Author(s):  
Sanqiang Yang ◽  
Shuang Sun ◽  
Lusheng Qin ◽  
Qian Li
Keyword(s):  
Dynamic Modulus ◽  
Viscoelastic Properties ◽  
Testing Machine ◽  
Asphalt Mixture ◽  
Economic Benefits ◽  
Structural Performance ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
Multi Scale ◽  
Macro Scale

The applications of rubber-modified asphalt and its mixtures have received widespread attention due to the environmental and economic benefits of such materials. However, studies on the structural performance of rubber-powder-modified asphalt pavement are only concentrated on a certain scale, leading to research on the structural performance of pavement mostly focusing on mechanical responses at a macro scale. Therefore, the present study adopts the concept of multi-scale research to analyze the viscoelasticity of high-dosage-modified asphalt and its mixtures at a microscopic scale from the perspective of meso-mechanical analysis. In this paper, to ensure the overall durability of a structure, the effective asphalt film thickness and coarse aggregate angularity index of the test material were measured first. The viscoelasticity of asphalt modified with rubber powder was then analyzed using a Brinell viscosity test, scanning electron microscopy (SEM), and a dynamic shear rheometer (DSR). We determined the optimal amount of rubber powder to be 30%. A universal testing machine was used to study the influence of different temperatures and loading frequencies on the viscoelastic properties of different asphalt mixtures. Research on the dynamic modulus found that the incorporation of rubber powder increases the elastic properties of the mixture such that the rubber-powder-modified asphalt mixture had a higher dynamic modulus. At the same time, the high-dosage-modified asphalt mixture was found to be closer to an elastomer under a low temperature and high frequency. At a high temperature and low frequency, the asphalt mixture changed into a viscoelastic body whose viscous properties were mainly affected by the asphalt binder. The addition of rubber powder changed the temperature sensitivity of the asphalt and then affected the viscoelastic properties of the asphalt mixture.

Study on Performance of Rubber Powder Modified Asphalt Mixture

2014 ◽  
Vol 599 ◽  
pp. 252-256 ◽  
Author(s):  
Yan Shuang Zhang ◽  
Quan Liang Li ◽  
Jian Zhong Dong ◽  
Qing Hu Zhang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Key Words ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Performance Study ◽  
High Temperature Stability ◽  
Rubber Powder ◽  
Modified Asphalt ◽  
Asphalt Performance

Through the asphalt performance experiment, obtains the best proportion of rubber powder. Through the contrast test of asphalt mixture, the water sensibility, high temperature stability and low temperature stability of asphalt mixture have been studied. Key words: rubber powder modified asphalt asphalt mixture performance study

Sign in / Sign up

Export Citation Format

Share Document