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1Research and Development Center of Transport Industry of Technologies, Materials and Equipments of Highway Construction and Maintenance, Shijiazhuang, China
2Hebei Provincial Communications Planning, Design and Research Institute CO. LTD, Shijiazhuang, China
3China Construction Port Group CO. LTD, Qingdao, China
Warm mix asphalt has special viscosity characteristics, and the compaction mechanism is different from that of hot mix asphalt. It is necessary to investigate the compaction characteristics of warm mix asphalt by laboratory test. The compaction characteristics of surface active warm mix SMA mixture were determined by viscosive-temperature curve, rotational compaction and Marshall compaction. The experimental results show that the surface active warm mix has little effect on the viscosity of asphalt, it changes the interface characteristics between asphalt and aggregate, and makes the mixture more easily compacted. The viscosity-temperature curve is not suitable for determining the mixing and rolling temperature of surface active warm mix asphalt mixture; In the process of Marshall compaction, the relative movement between aggregates was limited, and the test itself could not fully reflect the cooling effect of surface active warm mix. The forming temperature can not be determined according to the cooling experience of warm mixing agent in engineering application. It should be shaped according to the temperature of the hot mix; Using rotary compaction molding SMA mixture, under the condition of 140°C~155°C, 120 times of rotary compaction can ensure that the mixture can achieve a better compacting state, surface active warm mixing agent can reduce the molding temperature by 10~20°C.
Surface Activity, Warm Mix, Compaction Characteristics, Viscosity Curve, Compaction Temperature
Xiaosen Wang, Gang Li, Jie Li. (2022). Study on the Compaction Temperature of Warm Mix Asphalt Mixture Based on Different Test Equipment. World Journal of Applied Physics, 7(3), 43-47. https://doi.org/10.11648/j.wjap.20220703.12
Copyright © 2022 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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