NANOMODIFIERS IN PRODUCING HIGHER QUALITY PAVING ASPHALT

2021 ◽  
Vol 2 (3) ◽  
pp. 68-76
Author(s):  
G.V. Provatorova
Keyword(s):  
Paving Asphalt

Influence of Air-Blowing on the Performance-Related Properties of Paving Asphalt

1996 ◽  
Vol 1535 (1) ◽  
pp. 29-35
Author(s):  
Kevin P. G allagher ◽  
Hussain U. Bahia ◽  
Jason D. Guerra ◽  
Jay Keating
Keyword(s):  
Asphalt Binders ◽  
Wide Range ◽  
Paving Asphalt ◽  
Air Blowing ◽  
Better Than

A comprehensive experiment was designed to compare the performance-related properties of a wide range of air-blown asphalt binders with those of straight run asphalt binders of similar viscosity grades. The binders were evaluated using the concepts of the Superpave binder specifications. In contrast to the prevailing perception in the industry, all performance-related properties of the air-blown binders were found to be as good as or better than conventional straight run asphalt binders.

Research on the Temperature Stress Field of Interface End between Asphalt Concrete Overlay and Concrete Pavement

2010 ◽  
Vol 160-162 ◽  
pp. 1704-1711
Author(s):  
Yu Wei Zhang ◽  
Qing Guo Yang ◽  
Zhi Zhong Tu
Keyword(s):  
Elastic Modulus ◽  
Stress Field ◽  
Asphalt Concrete ◽  
Interface Design ◽  
Concrete Pavement ◽  
Crack Tip Field ◽  
Initial Stress Field ◽  
Asphalt Overlay ◽  
Paving Asphalt ◽  
Cement Concrete Pavement

For the interface end formed after paving asphalt overlay on cement concrete pavement, the stress field of interface end is very important for both structural analysis and interface design when the temperature drops. The stress field of interface end can be gotten with the crack-tip field theory that consider displacement continuation and stress equality on each side of interface, but it needs further verification to prove whether the initial stress field can satisfy far field boundary condition when temperature dropping. In conditions of different material properties, different plane dimension and different thickness of asphalt overlay the stress field is calculated with the finite element method (FEM), and the results show that the forms of theoretical solution can exactly describe stress field of the interface end when temperature dropping. The stress field of interface end indicates that when the elastic modulus of asphalt overlay becomes lager, the stress singularity’s degree of interface end will reduce. As for the interface end formed after paving asphalt concrete overlay on the concrete pavement, improving the elastic modulus of asphalt overlay is beneficial.

Modification of FCC slurry oil and deoiled asphalt for making high-grade paving asphalt

2021 ◽  
Author(s):  
Lingrui Cui ◽  
Jun Xu ◽  
Mannian Ren ◽  
Tao Li ◽  
Dianhua Liu ◽  
...  
Keyword(s):  
High Grade ◽  
Paving Asphalt

scholarly journals Performance Evaluation of Warm- and Hot-Mix Asphalt Mixtures Based on Laboratory and Accelerated Pavement Tests

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Yongjoo Kim ◽  
Jaejun Lee ◽  
Cheolmin Baek ◽  
Sunglin Yang ◽  
Sooahn Kwon ◽  
...  
Keyword(s):  
Asphalt Mixture ◽  
Warm Mix Asphalt ◽  
Strength Test ◽  
Asphalt Mixtures ◽  
Limited Data ◽  
Tensile Strength Test ◽  
Paving Asphalt ◽  
Dynamic Modulus Test ◽  
Indirect Tensile ◽  
Lower Temperature

A number of warm-mix asphalt (WMA) technologies are used to reduce the temperature at which the asphalt mixtures are produced and compacted, apparently without compromising the performance of the pavement. The main objective of this study is to determine whether the use of an innovative wax-based LEADCAP WMA additive influences the performance of the asphalt mixture, which is produced and compacted at significantly low temperatures. The WMA pavement using LEADCAP additive (WMA-LEADCAP) along with a control HMA pavement was evaluated with respect to their performances of rutting resistance, crack resistance, and viscoelastic property based on the laboratory dynamic modulus test, indirect tensile strength test, and in-door accelerated pavement test (APT) results. With the limited data carried out, the LEADCAP additive is effective in producing and paving asphalt mixture at approximately 30°C lower temperature than a control HMA mixture, and the performances of WMA-LEADCAP pavement are comparable to a control HMA pavement.

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