Prof. Yong Ma Profile

Prof. Yong Ma

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Proceedings Article | 10 November 2021 Paper

Research and application of post-doped fire-retardant epoxy asphalt tunnel pavement

Yong Ma, Yanbin Zhao, Linyan Zhang, Yinqing Zhao, Guangxue Yuan, Yongjun Wang, Jiliang Feng

Proceedings Volume 12050, 120504G (2021) https://doi.org/10.1117/12.2614179

KEYWORDS: Epoxies, Resistance, Roads, Combustion, Corrosion, Safety, Manufacturing, Bridges, Particles, Water

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The rate of traffic accident is typically very high in tunnels due to the relatively closed environment, small space and poor internal light, particularly in mountainous areas that the pavement in long tunnels. Normal asphalt concrete pavement performs poorly in terms of resisting both fire and water damage. There is a strong need to propose a novel asphalt concrete for tunnel paving to achieve better fire resistance and long-lasting pavement. A new fire-resistant epoxy asphalt material containing a low resin content of 6-11% was developed in this study. Consequently, a novel post-doped construction technology is proposed to meet the harsh requirement of construction timing of epoxy asphalt. The properties of the epoxy asphalt concrete under different temperature conditions were evaluated for water stability, kerosene immersion, and fire resistance test, as well as accelerated loading test in water at temperature of 60℃. The epoxy asphalt was successfully used to construct a 3cm-thick pavement by the post-doped constructing method in a highway tunnel in Yunnan province, China. The results of this study provide an alternative asphalt concrete mixture and construction method for tunnel paving with the features of fire-resistant and long-lasting.

Proceedings Article | 10 November 2021 Paper

Study on the sliding resistance and mechanical properties of two-component epoxy resin anti-sliding thin layer

Zhoucong Xu, Quanlei Wang, Haonan Zhou, Yong Ma, Xinrong Fan, Yanbin Zhao

Proceedings Volume 12050, 120503Z (2021) https://doi.org/10.1117/12.2613953

KEYWORDS: Epoxies, Resistance, Roads, Communication engineering

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To study the anti-sliding performance of the two-component epoxy resin thin layer, a combination of accelerated loading test and mechanical test was used to focus on the influence of different aggregate types on its anti-sliding performance. SMA-10 and modified emulsified asphalt micro-surface were selected as a control group, accelerated loading test were carried out, the law of BPN value, TD value, and aggregate wear mass loss rate with wear time were analyzed; and the logarithmic formula was used to make a fitting regression of the attenuation law of anti-sliding performance. Through shear test and pull-out test, the influence of different aggregate types and asphalt on its mechanical properties was analyzed. The test results showed that the anti-sliding performance of the two-component epoxy resin anti-sliding layer was better than that of SMA-10 and the modified emulsified asphalt micro-surface; within 3h after the start of the accelerated loading test, the anti-sliding performance decayed rapidly, and the later decay rate was slow and showed a slow decreasing trend. Besides, the relationship between the TD value and the BPN value with abrasion time had a good correlation with the logarithmic formula. In addition, the shear strength and bonding strength between the anti-sliding thin layer and the asphalt concrete base surface are strong, and the failure surfaces of the specimens all appear inside the asphalt layer.

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