Effect of Portland Cement on Moisture Resistance of Gneiss Based HMA

Abstract:

The rapid development of expressway construction has imposed huge pressure on the supply of superior aggregates in China. Gneiss rarely gets applied in pavement construction due to its weak adhesion with asphalt binder. Adhesion strength is directly related to moisture resistance of asphalt mixture. Therefore the main objective of this research was to estimate the effect of composite filler, consist of limestone powder and Portland cement with different proportions, on moisture resistance of gneiss based hot mix asphalt mixture (HMA). X-ray fluorescence (XRF) was applied to determine average chemical composition of raw materials. The effects of composite fillers on moisture resistance were carried out by immerged Marshall test and tensile strength ratio test. Results show that Portland cement significantly improves moisture resistance of gneiss based HMA.

• Periodical: Key Engineering Materials (Volume 599)
• Pages: 120-124
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.599.120
• Online since: February 2014
• Authors: Zong Wu Chen*, Peng Wang, Xin Xing Zhou, Shao Peng Wu
• Keywords: Gneiss Based HMA, Moisture Resistance, Portland Cement

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