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Zheng C.,Jilin University | Zhao D.,Jilin University | Chen C.,Jilin University | Song Z.,Shenzhen Municipal Design and Research Institute Co. | Zheng S.,Jilin Provincial Communication Scientific Research Institute
Construction and Building Materials | Year: 2013

Quantitative test technology on the mesoscopic strength parameters of the mineral aggregate contact surface of bituminous-stabilized macadam was studied. On the basis of the failure mechanism of the mineral aggregate contact surface, the HC-40 hydraulic force measurement device and the self-designed test die were used to apply tensile load on the contact surface of the mineral aggregate. The total tensile strength Rt of the mineral aggregate contact surface was calculated. The total tensile strength Rt was compared with the splitting strength RT of the AM-20 Semi-Open-Graded bituminous-stabilized macadam mixture under different conditions. A corresponding calculation method was used to determine the adhesion strength Ra between the aggregates and bitumen, as well as the cohesion strength Rc of the bitumen binder itself. The results show that despite the small difference in numerical value between the total tensile strength Rt of the mineral aggregate contact surface and the splitting strength RT of the mixture, the variation law is consistent. The method of calculation adopted in the present study can provide the quantitative test for the adhesion strength Ra and the cohesion strength Rc at different states. The mesoscopic parameters of the mineral aggregate contact surface can directly affect the macroscopic strength parameters of the mixture. The test can promote the study on crack resistance and raveling resistance abilities of bituminous-stabilized macadam mixtures. Crown Copyright © 2012 Published by Elsevier Ltd. All rights reserved.


Yiqiu T.,Harbin Institute of Technology | Xiaolin L.,Harbin Institute of Technology | Jiantao W.,Jilin Provincial Communication Scientific Research Institute
Journal of Materials in Civil Engineering | Year: 2012

The interaction parameter K.Ziegel-B was used as an evaluation index to characterize asphalt-aggregate filler interactions. In this study of asphalt-aggregate filler interactions, the rheological properties of asphalt mastics using two kinds of asphalts and four kinds of aggregate powder under different filler concentrations were measured by a dynamic shear rheometer, the internal influence factors of asphalt-aggregate filler interactions were analyzed, and the significance of influence factors were sorted by using the variance analysis method. The research shows that filler concentration, asphalt components, silica content, and particle size of aggregate powder all have a certain regularity effect on asphalt-aggregate filler interactions. The variance analysis method reveals the contribution order of various influence factors on interactions, the contribution order from high to low are colloid and asphaltene, particle size of aggregate, silica content and filler concentration. © 2012 American Society of Civil Engineers.


Li W.,Harbin Institute of Technology | Wang Z.,Harbin Institute of Technology | Sun D.,Jilin Provincial Communication Scientific Research Institute
Applied Mechanics and Materials | Year: 2012

The objective of this study is to introduce a dynamic assessment method about simple-supported girder bridge. This paper introduces the dynamic test contents, test methods, test results and the assessment index. The dynamic tests included ambient vibration tests which were used to identify the bridge modal parameters and forced vibration tests based on controlled traffic loads which were used to obtain the and vibratory response. The analytical results showed that the dynamic performance was in good condition and the bridge had great potential of carrying capacity. This method provided effective means for the assessment of the existing simple-supported girder bridge. © (2012) Trans Tech Publications.


Tan Y.,Harbin Institute of Technology | Li X.,Harbin Institute of Technology | Wu J.,Jilin Provincial Communication Scientific Research Institute
Journal Wuhan University of Technology, Materials Science Edition | Year: 2012

In order to find a parameter as the evaluation index that can capture the effect of the interaction between asphalt and aggregate, the rheological properties of asphalt mastics using two kinds of asphalts and four kinds of aggregates under different filler-asphalt ratios were measured by a dynamic shear rheometer(DSR). Moreover, four rheological parameters of K.Ziegel-B, Luis Ibrarra-A, complex shear modulus δG* and complex viscosity δη* for evaluating the interaction ability were studied. Results indicate that all the four parameters can characterize the interaction ability of asphalt and aggregate correctly and feasibly. Through the comparison of sensitivities and physical meanings of the four parameters, K.Ziegel-B with high sensitivity and exact physical meaning is finally selected as the evaluation index for interaction ability of asphalt and aggregate. © Wuhan University of Technology and Springer Verlag Berlin Heidelberg 2012.


Tan Y.-Q.,Harbin Institute of Technology | Li X.-L.,Harbin Institute of Technology | Wu J.-T.,Jilin Provincial Communication Scientific Research Institute | Luo D.-S.,China Academy of Transportation Science | Cao L.-P.,Harbin Institute of Technology
Zhongguo Gonglu Xuebao/China Journal of Highway and Transport | Year: 2012

The parameter B was used as the evaluation index for the asphalt-aggregate interaction ability. The rheological properties of asphalt mastics using two kinds of asphalts and four kinds of aggregates under different filler-asphalt ratios were measured with a dynamic shear rheometer. The interaction ability of asphalt and aggregate changing with temperature and loading frequency was analyzed, and the external conditions for evaluation of asphalt-aggregate interaction ability were determined. The results show that with the temperature increasing, the interaction ability of asphalt and aggregate is small at first and large at last, while the influence of loading frequency on interaction ability of asphalt and aggregate is opposite under both high temperature and low temperature.

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