Influences and Mechanisms of Ordinary Portland Cement on Properties of Asphalt Emulsion Composites

Abstract:

Asphalt emulsion composites are energy-saving, ecologically safe materials because they do not need any heating processes which can emit gas and fire hazard in their use. Their use for highway structural layers has attracted relatively little attention largely in China because of the problems associated with the time taken for full strength to be achieved after paving and the susceptibility to early life damage by rainfall. This research work aims at studying influences of using ordinary Portland cement to asphalt emulsion composites. The asphalt emulsion composites were prepared using a three step; road properties were studied and mechanisms were analyzed with Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Analysis (EDXA). The results indicate that ordinary Portland cement addition improves road properties of the composites, such as Marshall stability, compressive strength, dynamic stability and ratio of splitting strength after freezing-thawing cycles. Splitting strength at low temperature of the composites increases with the cement increase, but if the cement dosage surpasses 3.0%, the composites become brittle. So optimal cement dosage is 3.0% in aggregate mass. There is much hydrated calcium silicate(C-S-H) gel in the composites with the cement, which can increase mass and atom percentage of Ca element and Si element, decrease proportions of free asphalt and make mastics in the composites more dense. Road properties of asphalt emulsion composites can be improved.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 235-240
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.235
• Online since: November 2010
• Authors: Zhen Jun Wang, Rui Wang
• Keywords: Asphalt Emulsion Composite, Influence, Mechanism, Ordinary Portland Cement, Property Analysis

References

[1] Gransberg Douglas D. and Zaman Musharraf: Journal of Transportation Engineering Vol. 131 (2005), pp.229-238.

[2] J.A. Shen: Road Performance of Asphalt and Asphalt mixtures (People's Communications Press, China 2001).

[3] L.Q. Hu and A.M. Sha: Journal of Chang'an University: Natural Science Edition Vol. 27 (2004), pp.12-16.

[4] Q.G. Li, Y. Zhao and S. S. Pang: Cement and Concrete Research Vol. 28 (1998), pp.635-641.

[5] P.H. Xu, Z.Y. Song and A. M. Sha: China Journal of Highway and Transport Vol. 15 (2002), pp.7-11.

[6] A.L. Yao and R.Y. Fang: Journal of Xi'an Highway University Vol. 21 (2001), pp.17-20.

[7] X.X. Wang, A.M. Sha, L.Q. Hu: Journal of Highway and Transportation Research and Development Vol. 22 (2005), pp.57-60.

[8] Q.G. Li, Y. Zhao and S. S. Pang: Transportation Research Record Vol. 1652 (1999), pp.210-214.

[9] B.S. Huang, X. Shu and G.Q. Li: Cement and Concrete Research Vol. 35 (2005), p.2008-(2013).

[10] Miró Recasens R., Pérez Jiménez F.E., Castillo Aguilar S.: Materials and Structures Vol. 33 (2000), pp.324-330.

[11] Pouliot N., Marchand J. and Pigeon M.: Journal of Materials in Civil Engineering Vol. 15 (2003), pp.54-59.

[12] Cheng-Tsung Lu, Ming-Feng Kuo and Der-Hsien Shen: Construction and Building Materials Vol. 23 (2009), pp.2580-2585.

[13] S. Oruc, F. Celik and M.V. Akpinar: Journal of Materials Engineering and Performance Vol. 16 (2007), pp.578-583.

[14] Al-Qadi I.L., Gouru H. and Weyers R.E.: Journal of Transportation Engineering Vol. 12 (1994), pp.94-108.

[15] Y. Niazi and M. Jalili: Construction and Building Materials Vol. 23 (2009), pp.1338-1343.