Design Method and Study on Water Stability of Warm Mixing Regeneration Mixture Based on Interface Effect

Abstract:

The paper introduced the design procedure and design method of warm mixing regeneration mixture AC13. The water stability of warm mixing regeneration mixture was studied systematically with Evotherm warm mixing agent and self-prepared interface dispersant, the form change of old asphalt membrane and old aggregate in RAP was analyzed based on interface effect, and the optimum interface dispersant dosage was determined on this base. Results showed that: with the the interface dispersant dosage rising, significant changes of the TSR and splitting strength frozen-thawed before and after of warm mixing regeneration mixture occurred; when the interface dispersant dosage reached 2‰(based on RAP), both the TSR and splitting strength frozen-thawed before and after of warm mixing regeneration mixture were high,which verified the excellent water stability of warm mixing regeneration mixture; superfluous interface dispersant had negative effects on the water stability of warm mixing regeneration mixture.The exfoliation between old asphalt membrane and old aggregate and secondary coat were realized by interface effect.

• Periodical: Applied Mechanics and Materials (Volumes 713-715)
• Pages: 2640-2643
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.713-715.2640
• Online since: January 2015
• Authors: Hui Qiang Chen*
• Keywords: Interface-Effect, Warm Mixing Regeneration Design Method, Water Stability

References

[1] LIU Zhi-fei, WU Shao-peng. Status and Problems of Warm Mix Asphalt[J]. Journal of Wuhan University of Technology, 2009, vol31(4): 170-173.

[2] Li Zhen, Xu Shi-fa. Evaluation of Compaction Characteristics of Warm-Recycled Asphalt Mixture[J]. Journal of Beijing University of Civil Engineering and Architecture, 2010, vol26（1）：14~19.

[3] XIAO Qqing-Yi, XUE Hang. Mositure Damage Model of Asphalt Mixture Based on Surface and Interface Theory[J]. Journal of Wuhan University of Technology, 2007，vol29（5）：71~74.

[4] HE Juan，SU Dagen. Study on Interfacial Effects of Silane Coupling Between Asphalt with Granite and Cement Mortar[J]. Central South Highway Engineering, Vol 32（2）：23~26.

[5] Malliek R B，Bradley J E, Riehard L. Bradbury. Evaluation of Heated Reclaimed Asphalt Pavement Material and Wax-Modified Asphalt for Use in Recycled Hot-Mix AsPhalt[J]. Journal of the Transportation Research Board, 2007，2007(1998): 112~12.

DOI: 10.3141/1998-14

[6] Dr. Walaa S. Mogawer. Performance Characteristics of Thin Lift Overlay Mixtures Containing High RAP Content, RAS, and Warm Mix Asphalt Technology[C]. In：Proc. of the 89th Annual Meeting of the Transportation Research Board. Washington, D. C, (2011).

DOI: 10.3141/2208-03

[7] QIN Yong-chun, HUANG Song-chang. Performance of SMA Mixture Based on Evotherm-DAT Warm Mix Asphalt [J]. Technology. Journal of Building Materials, 2010, vol13(1)：32~35.