Study on the Effect of Surfactant on the Performance of Diluted Asphalt and Normal Temperature Mixture
王黎明1, 刘君云1, 王慧博2
1. School of Civil Engineering, Northeast Forestry University, Harbin Heilongjiang 150040, China; 2. Harbin Municipal Engineering Design Institute, Harbin Heilongjiang 150040, China
Study on the Effect of Surfactant on the Performance of Diluted Asphalt and Normal Temperature Mixture
WANG Li-ming1, LIU Jun-yun1, WANG Hui-bo2
1. School of Civil Engineering, Northeast Forestry University, Harbin Heilongjiang 150040, China; 2. Harbin Municipal Engineering Design Institute, Harbin Heilongjiang 150040, China
摘要To explore the influence of surfactant on performance of diluted asphalt and its mixture, the mixture of heavy oil viscosity reducer AMS and Span80 is added to diluted asphalt, the influences of surfactant on the mixing and compaction of diluted asphalt mixture are investigated through the tests of viscosity-temperature relationship, surface contact angle, mixing adhesion rate and compaction characteristics. The experimental result shows that (1) The mixed oil-soluble surfactant can significantly reduce the surface tension of asphalt-aggregate interface and reduce the viscosity of the diluted asphalt, in which the influence on interface is dominant. The addition of the mixed surfactant can ensure the mixing effect of the mixture under the condition of reducing the diesel consumption. (2) The addition of the mixed surfactant can reduce the viscosity of diluted asphalt, and has significant effect on improving the construction workability of diluted asphalt. It can significantly change the liquid-solid interfacial tension between asphalt and aggregate, and make the asphalt mixture still achieve good construction performance under the condition of reducing the content of diluent. (3) The addition of the mixed surfactant can make asphalt spread better on aggregate surface, reduce resistance and is easier for paving. (4) During the compaction process, the addition of the mixed surfactant can play lubricating effect between asphalt and aggregate, make the final compactness of the diluted asphalt mixture greater, improve the wetting and paving ability of asphalt on the aggregate surface, improve the mixing uniformity of the mixture and make it easier for paving and compaction. (5) At the surfactant dosage of 1.0%-1.5%, the improvement of the paving and compaction characteristics of the diluted asphalt mixture can achieve the effect of adding 4%-6% diesel oil, the 1.0%-1.5% mixed surfactant can replace 4%-6% diesel diluent, so that the mixture can achieve the same mixing uniformity and compacting performance.
Abstract：To explore the influence of surfactant on performance of diluted asphalt and its mixture, the mixture of heavy oil viscosity reducer AMS and Span80 is added to diluted asphalt, the influences of surfactant on the mixing and compaction of diluted asphalt mixture are investigated through the tests of viscosity-temperature relationship, surface contact angle, mixing adhesion rate and compaction characteristics. The experimental result shows that (1) The mixed oil-soluble surfactant can significantly reduce the surface tension of asphalt-aggregate interface and reduce the viscosity of the diluted asphalt, in which the influence on interface is dominant. The addition of the mixed surfactant can ensure the mixing effect of the mixture under the condition of reducing the diesel consumption. (2) The addition of the mixed surfactant can reduce the viscosity of diluted asphalt, and has significant effect on improving the construction workability of diluted asphalt. It can significantly change the liquid-solid interfacial tension between asphalt and aggregate, and make the asphalt mixture still achieve good construction performance under the condition of reducing the content of diluent. (3) The addition of the mixed surfactant can make asphalt spread better on aggregate surface, reduce resistance and is easier for paving. (4) During the compaction process, the addition of the mixed surfactant can play lubricating effect between asphalt and aggregate, make the final compactness of the diluted asphalt mixture greater, improve the wetting and paving ability of asphalt on the aggregate surface, improve the mixing uniformity of the mixture and make it easier for paving and compaction. (5) At the surfactant dosage of 1.0%-1.5%, the improvement of the paving and compaction characteristics of the diluted asphalt mixture can achieve the effect of adding 4%-6% diesel oil, the 1.0%-1.5% mixed surfactant can replace 4%-6% diesel diluent, so that the mixture can achieve the same mixing uniformity and compacting performance.
基金资助:Supported by the Fundamental Research Funds for the Central Universities (Nos.2572014CB22, 2572018BJ16); the Science and Technology Project of Heilongjiang Provincial Department of Transportation (No.20210027)
通讯作者:
WANG Li-ming, LIU Jun-yun
引用本文:
王黎明, 刘君云, 王慧博. Study on the Effect of Surfactant on the Performance of Diluted Asphalt and Normal Temperature Mixture[J]. Journal of Highway and Transportation Research and Development, 2023, 17(2): 1-9.
WANG Li-ming, LIU Jun-yun, WANG Hui-bo. Study on the Effect of Surfactant on the Performance of Diluted Asphalt and Normal Temperature Mixture. Journal of Highway and Transportation Research and Development, 2023, 17(2): 1-9.
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