The Research of Bituminous Mixture Water Stability Based on Aggregate Cleanness

Abstract:

Water stability of bituminous mixture, whose sediment concentration of coarse and fine aggregate are respectively in 1%, 2%, 3%, 4%, is tested and analyzed; meanwhile, under the condition of vacuum saturation, the water uptake and the residual water of bituminous mixture, whose sediment concentration of coarse and fine aggregate are respectively in 0%, 2%, 4%, are also tested. Based on the test, the tensile splitting strengths are analyzed, in correspondence to different water rates. Results show that the water stability of bituminous mixture reduces as the aggregate sediment concentration increases, and its influence on the cleanness to the fine aggregate is more sensitive than on the coarse aggregate; the ability of water uptake increases as the aggregate sediment concentration increases; residual water approaches to stability with the extension of time. However, the higher the sediment concentration is, the higher residual water ratio will be as it approaching to stability. For clean aggregate, when the ratio of the residual water reaches 50%, its splitting strength appears to be the lowest; but for the unclean aggregate, when its splitting strength is in the lowest, the rate of residual water would rise to above 75%.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 3297-3301
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.3297
• Online since: May 2011
• Authors: Xue Dong Guo, Chun Mei Gao, Hao Wang, Ming Liang Zhang
• Keywords: Aggregate Cleanness, Bituminous Mixture, Rate of Residual Water, Road Works, Water Stability

References

[1] Dengliang Zhang: Engineering Handbook of Asphalt Pavements (China Communications Press, Beijing 2003), in Chinese.

[2] Zhigang Zhang: Hunan Communication Science and Technology (2006), pp.25-26, in Chinese.

[3] Xiaoguang Zheng, Qun Yang and Weimin Lu: Central South Highway Engineering (2006), pp.96-98, in Chinese.

[4] Wanjie Yuan, Zhongda Chen and Hongjun Wang: Central South Highway Engineering (2006), pp.114-117, in Chinese.

[5] Tuanjie Chen and Runping Jia: Journal of Highway and Transportation Research and Development (2005), pp.21-23, in Chinese.

[6] Shunwei Chen, Ke Xue and Guizhong Liu: Journal of Hebei University of Technology (2006), pp.92-95, in Chinese.

[7] Shunfu Chen, Dongping Han and Xili Yan: Concrete Foreign Pavement (2000), pp.49-52, in Chinese.

[8] Prithvi S.Kandhai and Cynthia Y. Lynn Tests for Plastic Fines in Aggregates Related to Stripping in AsphaltPavingMixturesProceedings of the Association of Asphalt Paving Technologists, Volume 67, 1998.

[9] Jiaji Yan: Road Construction Materials (China Communications Press, Beijing 2004), in Chinese.