Durability of asphalt mixture in different corrosion solution

Abstract

The corrosion to asphalt mixture under different kinds of corrosion solution, such as pH=2 solution, pH=12 solution, pH = 12 solution and 10% Na₂SO₄ solution, was studied. The performance attenuation of asphalt mixture was analyzed under the normal environment and the freeze-thaw environment, and the analysis was given on the sensitivity of the test results to the evaluation index. The experimental results show that the performance of asphalt mixture is attenuated faster under the acidic solution, alkaline solution and sulfate solution. Corrosion factor K _c, freeze-thaw corrosion factor K _f, and freeze-thaw effect factor K _fc are proposed to evaluate asphalt mixture resistance to corrosion in different kinds of corrosion solution. The values of K _c and K _fc decrease with the increasing of corrosion time. The change rule of K _f show that the rate of corrosion is decreased by the action of freeze-thaw in acidic solution and in alkaline solution, but is increased by the action of freeze-thaw in sulfate solution. The microscopic analysis indicates that acid solution reacts with aggregate of asphalt mixture, alkaline solution reacts with asphalt cement of asphalt mixture, the surface tension of sulfate solution and crystallization of sulfate are the main reasons which weak the performance of asphalt mixture.

Keywords

asphalt mixture / corrosion damage / corrosion mechanism / corrosion evaluation

References

[1] Gorkem C., Sengoz Burak. Predicting Stripping and Moisture Induced Damage of Asphalt Concrete Prepared with Polymer Modified Bitumen and Hydrated Lime [J]. Construction and Building Materials, 2009, 23(6): 2 227-2 236.

[2] Xiao F., Amirkhanian Serji N. Laboratory Investigation of Moisture Damage in Rubberised Asphalt Mmixtures Containing Reclaimed Asphalt Pavement[J]. International Journal of Pavement Engineering, 2009, 10(5): 319-328.

[3] Yang R., Liang X., Lai Yongman. Typical Causes and Countermeasures of Moisture Damage for Asphalt Pavement [J]. Journal of Tongji University (Natural Science), 2008, 6: 749-753.

[4] Kim Y.-R., Little D. N., Lytton R. L. Effect of Moisture Damage on Material Properties and Fatigue Resistance of Asphalt Mixtures[C]. 83rd Annual Meeting of the Transportaion-Research-Board, Washington DC, 2004, 1891: 48-54.

[5] Cho D.-W., Bahia Hussain U. New Parameter to Evaluate Moisture Damage of Asphalt-aggregate Bond in Using Dynamic Shear Rheometer [J]. Journal of Materials in Civil Engineering, 2010, 22(3): 267-276.

[6] Birgisson B., Roque R., Page G. C. Evaluation of Water Damage Using Hot Mix Asphalt Fracture Mechanics [C]. Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions, 2003, 72: 424-462.

[7] Cheng DingXin, Little Dallas N, Lytton Robert L. Moisture Damage Evaluation of Asphalt Mixtures by Considering Both Moisture Diffusion and Repeated-Load Conditions[C] In: 82rd Annual Meeting of the Transportaion-Research-Board, Washington DC, 2003, 1832: 42–49

[8] Wu S., Ye Q., Li Ning. Effects of Fibers on the Dynamic Properties of Asphalt Mixtures[J]. Journal Wuhan University of Technology-Materials Science Edition, 2007, 22(4): 733-736.

[9] James W, Shahin R. A Laboratory Examination of Pollutants Leached from four Different Pavements by Acid Rain [C]. In: Conference on Stormwater and Water Quality Management Modeling, Toronto Canada, 1997, 6(6):321–349

[10] Guo J., Liu Q., Li Mingyuan. The Effect of Alkali on Crude Oil/Water Interfacial Properties and the Stability of Crude Oil Emulsions [J]. Colloids and Surfaces, 2006, 273: 213-218.