scholarly journals Evaluation of High-Temperature Performance of Asphalt Mixtures Based on Climatic Conditions

Coatings ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 535
Author(s):  
Yan Mu ◽  
Zhen Fu ◽  
Jian Liu ◽  
Chen Li ◽  
Wenhao Dong ◽  
...  
Keyword(s):  
High Temperature ◽  
Dynamic Stability ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Climatic Conditions ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Long Duration ◽  
Different Temperatures ◽  
Modified Formula

The dynamic stability of a rutting test does not optimally reflect the high-temperature stability of asphalt mixtures. In this study, a rutting test was performed over a long duration (4 h) at different temperatures (40, 50, 60, 70 °C) for three asphalt mixtures, namely, matrix AC-16, SMA-16, and modified AC-16 asphalt mixtures. Subsequently, the temperature rutting rate was obtained after considering the annual temperature conditions of Guangdong and Beijing in China. Because the conditions of the rutting test were different from that of the actual pavement, the rut depth was calculated using a modified temperature rutting rate. This modification considered four factors: wheel trace distribution, temperature, pavement thickness, and loading rate. The calculation of the temperature rutting rate considered the climatic conditions and utilized the rutting deformation data from hour 1–4 of the rutting tests, during which the asphalt mixture was in a stable creep period. Thus, the high-temperature stability of the asphalt mixture was reflected more scientifically by the temperature rutting rate than the dynamic stability. The high-temperature rut-resistance of the asphalt mixture was found to improve significantly after the introduction of two additives (anti-rutting agent and lignin fiber). The modified formula for rut depth can realistically predict the annual rutting depth for three asphalt mixtures in a one-way driving pavement.

Research on the Paving Performance of Montmorillonite/SBS Modified Asphalt Mixtures

2012 ◽  
Vol 204-208 ◽  
pp. 4143-4146
Author(s):  
Zhong Guo He ◽  
Xin De Tang ◽  
Wen Jun Yin ◽  
Yi Fan Sun ◽  
Zhong Bo Liu
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Moisture Susceptibility ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt ◽  
Enhanced Stability

Montmorillonite/SBS composite modifed asphalts were prepared by mixing montmorillonite with SBS-modified asphalt, further the corresponding asphalt mixtures were obtained. The paving technical indexes of the mixture such as physical properties, moisture suscepyibility, and high temperature stability were tested, and compared with that of the corresponding SBS-modifed asphalt mixture and base asphalt mixture. The results demonstrate that the montmorillonite/SBS composite modifed asphalt mixture exhibites enhanced stability, improved flow value and moisture susceptibility, and increased high temperature stability.

scholarly journals Feasibility Evaluation of Preparing Asphalt Mixture with Low-Grade Aggregate, Rubber Asphalt and Desulphurization Gypsum Residues

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1481 ◽  
Author(s):  
Xiaoliang Zhang ◽  
Ben Zhang ◽  
Huaxin Chen ◽  
Dongliang Kuang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Crack Resistance ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Limestone Powder ◽  
Low Grade ◽  
High Temperature Stability ◽  
Temperature Crack

Road construction consumes great amounts of high-grade natural resources. Using low-grade natural rocks or some solid wastes as substitute materials is a hot topic. Considering this, the feasibility of using low-grade granite aggregate, solid waste-based filler (desulphurization gypsum residues, DGR) and binder (waste tire rubber modified asphalt, RMA) simultaneously in asphalt mixtures has been fully investigated in this research. The commonly used base asphalt and limestone powder (LP) filler were control groups. Material characteristics of raw materials mainly including micro-morphology, functional group, mineral phase, chemical composition and thermal stability were first evaluated in order to recognize them. Four asphalt mixtures (two asphalt binder and two filler) were then designed by standard Superpave method. Finally, a detailed investigation into the pavement performance of asphalt mixtures was carried out. The moisture damage resistance and low-temperature crack resistance were detected by the changing rules of stability, strength and fracture energy, and the high-temperature stability and fatigue performance were determined by wheel tracking test and indirect tensile (IDT) fatigue test, respectively. Results suggested that RMA and DGR both showed positive effects on the low-temperature crack resistance and fatigue property of the granite asphalt mixture. DGR also strengthened moisture stability. The contribution of RMA on high-temperature deformation resistance of the granite asphalt mixture was compelling. It can offset the insufficiency in high-temperature stability made by DGR. A conclusion can be made that asphalt mixture prepared with granite, DGR and RMA possesses satisfactory pavement performances.

scholarly journals Optimizing Gradation Design for Ultra-Thin Wearing Course Asphalt

Materials ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 189 ◽  
Author(s):  
Wentian Cui ◽  
Kuanghuai Wu ◽  
Xu Cai ◽  
Haizhu Tang ◽  
Wenke Huang
Keyword(s):  
High Temperature ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Wear Test ◽  
Asphalt Mixtures ◽  
Skid Resistance ◽  
High Temperature Stability ◽  
Functional Layer ◽  
Rutting Resistance ◽  
Road Surfaces

In recent years, ultra-thin wearing course asphalt mixture has been widely used in the reconstruction of old road surfaces and the functional layer of new road surfaces due to its good road performance. To improve the rutting resistance of ultra-thin wearing course asphalt mixture, this research presents an Ultra-thin Wearing Course-10 (UTWC-10) asphalt mixture with good high-temperature stability and skid resistance based on the Taylor system standard mesh specifications. The Course Aggregate Void Filling (CAVF) method is used to design the UTWC-10 asphalt mixture, which is compared with two other traditional ultra-thin wearing course asphalt mixtures on the basis of different laboratory performance tests. The high-temperature rutting test data shows that the rutting dynamic stability (DS) index of the UTWC-10 asphalt mixture is much higher than that of traditional wearing course asphalt mixtures, as it has better high-temperature stability. Moreover, anti-sliding performance attenuation tests are conducted by a coarse aggregate polishing machine. The wear test results show that the skid resistance of the UTWC-10 asphalt mixture is promising. The anti-sliding performance attenuation test can effectively reflect the skid resistance attenuation trend of asphalt pavement at the long-term vehicle load. It is verified that the designed UTWC-10 asphalt mixture shows excellent high-temperature rutting resistance and skid resistance, as well as better low temperature crack resistance and water stability than the traditional wearing course asphalt mixtures.

High Temperature Stability of Modified Asphalt Concrete

2013 ◽  
Vol 438-439 ◽  
pp. 391-394 ◽  
Author(s):  
Yuan Zhao Chen ◽  
Zhen Xia Li
Keyword(s):  
High Temperature ◽  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Weak Stability ◽  
Modified Asphalt ◽  
Longitudinal Slope

According to high temperature weak stability of common asphalt mixture, rutting tests of diatomite modified asphalt mixture, modified lake asphalt mixture, modified rock asphalt mixture and common asphalt mixture are carried out. Changes of dynamic stability for common asphalt mixture compared with modified asphalt mixtures are comparatively analysed. The results show that compared with common asphalt mixture, rutting resistances of diatomite modified asphalt mixture, modified lake asphalt mixture and modified rock asphalt mixture are greatly improved. It is proposed that those kinds of modified asphalt mixture are adopted in asphalt pavement of large longitudinal slope section.

Research of Asphalt Mixtures High Temperature Stability

2013 ◽  
Vol 405-408 ◽  
pp. 1871-1874
Author(s):  
Gen Chuan Luo
Keyword(s):  
High Temperature ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Influence Factors ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Air Voids ◽  
Asphalt Content ◽  
The Stability

Rutting is one of the most hazardous damage form of asphalt pavement.But,owing to itself inherent in the viscoelastic characteristics of asphalt mixture,the diversity of factors influencing the high temperature of asphalt pavement anti-rutting performance and the complexity of rut formation,this three reasons make ruts become a worldwide problem.Starting from the mixture.This article analyzed the influence factors of the rutting resistance of asphalt mixture at high temperature.For asphalt mixture, through the experimental data, the research status at home and abroad, from the type of asphalt, asphalt content, grading of aggregates and air voids four aspects analysis and study the influence factors of the stability of asphalt mixture at high temperature.

Relationship of High-Temperature Performance and Aggregate Gradation of Asphalt Mixtures Based on Fractal Theory

2012 ◽  
Vol 204-208 ◽  
pp. 3795-3798 ◽  
Author(s):  
Jing Bo Huang ◽  
Xun Yu
Keyword(s):  
Fractal Dimension ◽  
High Temperature ◽  
Fractal Theory ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
High Temperature Stability ◽  
Aggregate Gradation ◽  
Fractal Characteristics ◽  
Relationship Of

Fractal theory was introduced to study the asphalt mixture aggregate gradation which shows visible fractal characteristics, and the fractal dimension of seven different gradations of ATB-25 were calculated quantitatively. Then the rutting test was carried out, and the results show that the fractal dimension of aggregate gradation has a good correlation with the dynamic stability of asphalt mixture. Finally, the paper proposes a multiple linear regression formula which may more accurately predict the high-temperature stability of the asphalt mixture with different gradations.

Study on High Temperature Stability Index of Asphalt Mixture

2014 ◽  
Vol 513-517 ◽  
pp. 336-339
Author(s):  
Fu Ming Liu
Keyword(s):  
High Temperature ◽  
Dynamic Stability ◽  
Asphalt Pavement ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Stability Index ◽  
High Temperature Stability

High temperature stability of asphalt mixture is one of asphalt pavement major performance which concerns the permanent deformation of the pavement. Four different gradations were used to detect the mixture high temperature stability, dynamic stability or short for rut distortion for regress time was obtained from regression for the data of rutting test, and the test indicates that either of these two indexes can better characterize high temperature stability of asphalt mixture.

Stability of Asphalt Binder and Asphalt Mixture Modified by Polyacrylonitrile Fibers

2011 ◽  
Vol 228-229 ◽  
pp. 242-247 ◽  
Author(s):  
Li Yang Yao ◽  
Yun Peng Hu ◽  
Qin Ma ◽  
Xian Wei Ma
Keyword(s):  
High Temperature ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Methyl Cellulose ◽  
Temperature Stability ◽  
Asphalt Mixtures ◽  
Pavement Performance ◽  
Polyacrylonitrile Fiber ◽  
High Temperature Stability ◽  
Temperature Crack

The research was conducted to evaluate pavement properties of polyacrylonitrile fiber asphalt binder and asphalt mixtures, including high temperature stability of binder and mixture, low temperature crack resistance and water stability of mixture. Moreover, polyacrylonitrile fibers were compared with methyl cellulose in the asphalt binder and asphalt mixtures. The result indicates that polyacrylonitrile fibers may improve clearly the high temperature stability of asphalt binder, and pavement performance of mixtures is enhanced obviously. Also polyacrylonitrile fiber binder and mixtures have better performance than methyl cellulose.

Experimental Study of Typical Graded Asphalt Mixture about Dynamic Stability at High Temperature

2016 ◽  
Vol 858 ◽  
pp. 300-304
Author(s):  
Zhen Fu Chen ◽  
Dan Wu ◽  
Qiu Wang Tao ◽  
Yuan Chu Gan
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
High Temperature ◽  
Asphalt Mixture ◽  
Temperature Stability ◽  
Specimen Thickness ◽  
High Temperature Stability ◽  
Change Trend ◽  
Comparison And Analysis ◽  
The Stability

The high temperature stability of AC-16, AC-13, AC-20 under specimen thickness of 5cm and 6cm is studied through indoor asphalt mixture high rutting test, Through comparison and analysis about experimental data, it is found that the stability of AC-16, AC-13, AC-20 asphalt mixture at high- temperature decreases in turn. It is shown that thickness changes did not affect the change trend of the high temperature stability under gradation change, and the stability of AC-16 at high-temperature is the best, the AC-13 is second and the AC-20 is less.

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