scholarly journals A conditioning method to evaluate moisture influence on the durability of asphalt mixture materials

2016 ◽  
Vol 43 (11) ◽  
pp. 943-948 ◽  
Author(s):  
A. Diab ◽  
C. Sangiorgi ◽  
M. Enieb ◽  
Z. You
Keyword(s):  
Asphalt Mixture ◽  
Moisture Influence

A Hybrid Model to Predict the Gyratory Compaction of Hot Mixed Asphalt

2019 ◽  
Author(s):  
Teng Man
Keyword(s):  
Hybrid Model ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Aggregate Size ◽  
Asphalt Mixtures ◽  
Compaction Process ◽  
Particle Rearrangement ◽  
Compaction Behavior ◽  
Grain Size Distributions ◽  
Gyratory Compaction

The compaction of asphalt mixture is crucial to the mechanical properties and the maintenance of the pavement. However, the mix design, which based on the compaction properties, remains largely on empirical data. We found difficulties to relate the aggregate size distribution and the asphalt binder properties to the compaction behavior in both the field and laboratory compaction of asphalt mixtures. In this paper, we would like to propose a simple hybrid model to predict the compaction of asphalt mixtures. In this model, we divided the compaction process into two mechanisms: (i) visco-plastic deformation of an ordered thickly-coated granular assembly, and (ii) the transition from an ordered system to a disordered system due to particle rearrangement. This model could take into account both the viscous properties of the asphalt binder and grain size distributions of the aggregates. Additionally, we suggest to use the discrete element method to understand the particle rearrangement during the compaction process. This model is calibrated based on the SuperPave gyratory compaction tests in the pavement lab. In the end, we compared the model results to experimental data to show that this model prediction had a good agreement with the experiments, thus, had great potentials to be implemented to improve the design of asphalt mixtures.

Using Asphalt Mixture Beams in the Bending Beam Rheometer

2011 ◽  
Vol 12 (2) ◽  
pp. 293-314 ◽  
Author(s):  
Chun-Hsing Ho ◽  
Pedro Romero
Keyword(s):  
Asphalt Mixture ◽  
Bending Beam Rheometer

scholarly journals Comparative Study on Asphalt Mixture with Nano Materials and Polymer

2021 ◽  
Vol 1112 (1) ◽  
pp. 012019
Author(s):  
Akhila Bobbili ◽  
Sai Krishna Kollipara ◽  
V. Mallikarjuna ◽  
Malathi Narra
Keyword(s):  
Comparative Study ◽  
Asphalt Mixture ◽  
Nano Materials

Experimental Study on Mix Ratio Design and Road Performance of Medium and Small Deformation Seamless Expansion Joints of Bridges

2021 ◽  
pp. 036119812098474
Author(s):  
Pengzhen Lu ◽  
Chenhao Zhou ◽  
Simin Huang ◽  
Yang Shen ◽  
Yilong Pan
Keyword(s):  
Traffic Safety ◽  
Performance Test ◽  
Asphalt Mixture ◽  
Small Deformation ◽  
Expansion Joint ◽  
Expansion Joints ◽  
Mixture Ratio ◽  
The Road ◽  
Marshall Test ◽  
Road Performance

Expansion joints are a weak and fragile part of bridge superstructure. The damage or failure of the expansion joint will lead to the decline of bridge durability and endanger the bridge structure and traffic safety. To improve the service life and performance of bridge expansion joints, the ideal method is to use seamless expansion joints. In this study, starting from the commonly used asphalt mixture gradation of seamless expansion joint, and taking into account the actual situation of bridge expansion joint structure and environment in China, the gradation and asphalt-aggregate ratio are preliminarily designed. Through a Marshall test, the corresponding asphalt mixture is evaluated and analyzed according to the stability, flow value, and void ratio, and the optimal gradation and asphalt-aggregate ratio are determined. Finally, the asphalt mixture is prepared with the mixture ratio design, and the test results of an immersion Marshall test, fatigue performance test, and full-scale test verify that the asphalt mixture meets the road performance requirements of seamless expansion joints. On the basis of the experimental data, the performance of large sample asphalt mixture is continuously tested, compared, and optimized. The results show that the asphalt mixture ratio designed is true and reliable, which can provide reference for the optimal design of seamless expansion joint filler.

scholarly journals Experimental Research on Crack Resistance of Fiber Asphalt Mixture in Cold Area

2021 ◽  
Vol 791 (1) ◽  
pp. 012072
Author(s):  
Bo Peng ◽  
Shuai Liu ◽  
Wenying Li ◽  
Jingwen Peng ◽  
Yilang Li ◽  
...  
Keyword(s):  
Crack Resistance ◽  
Experimental Research ◽  
Asphalt Mixture ◽  
Cold Area

Influence of ternary blended cementitious fillers in a cold mix asphalt mixture

2021 ◽  
pp. 128421
Author(s):  
Dong Lu ◽  
Yun Wang ◽  
Zhen Leng ◽  
Jing Zhong
Keyword(s):  
Asphalt Mixture
Sign in / Sign up

Export Citation Format

Share Document