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<p>This study proposes an environmentally friendly anti-freezing micro-surfacing technology to address ice accumulation on roads while reducing reliance on conventional de-icing chemicals. Six types of styrene-butadiene rubber (SBR) and four types of epoxy resin (ER) were selected as modifiers. The properties of emulsified asphalt prepared with these modifiers were evaluated by three major index tests, bond strength test and fluorescence microscope test. The results indicated that SBR latex primarily impacts the low-temperature performance of emulsified asphalt, and water-borne epoxy resin (WER) demonstrated better distribution than oil-borne epoxy resin (OER). The recommended dosage of SBR is 3% and for WER is 2–6%. The partially replacing mineral fillers with anti-freezing fillers in composite modified emulsified asphalt was investigated. Four different anti-freezing fillers replacement ratios, which include 0%, 35%, 70% and 100%, were adopted to assess the influence of anti-freezing fillers, and optimum anti-freezing fillers replacement ratio was proposed. MSCR test results demonstrated that anti-freezing fillers were detrimental to the high-temperature performance of emulsified asphalt. It is recommended that the proportion of anti-freezing fillers replacing mineral powder ranges from 35 to 70%. Based on the research results, specimens of anti-freezing micro-surfacing were prepared. The cohesion test, wet wheel abrasion test and ice melting test were employed to evaluate the molding speed, wear resistance and anti-freezing performance of the anti-freezing micro-surfacing. It was found that the anti-freezing micro-surfacing exhibits good wear resistance, with no aggregate peeling observed on its surface after long-term wear. Furthermore, the anti-freezing micro-surfacing can continuously and stably release active ingredients, fulfilling long-term ice melting requirements. This technology not only extends pavement service life but also reduces environmental risks associated with salt-based deicers, offering a dual solution for winter road safety and cleaner infrastructure maintenance.</p>

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Research and development of multi-component anti-freezing micro-surfacing for sustainable winter pavement maintenance

  • 期刊论文

  • 发表日期：

    2026年2月27日

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  • Yunze Pang,
  • Liyan Shan,
  • Guohua Liu,
  • Jiaxin Hu,
  • Yudong Yuan

摘要

This study proposes an environmentally friendly anti-freezing micro-surfacing technology to address ice accumulation on roads while reducing reliance on conventional de-icing chemicals. Six types of styrene-butadiene rubber (SBR) and four types of epoxy resin (ER) were selected as modifiers. The properties of emulsified asphalt prepared with these modifiers were evaluated by three major index tests, bond strength test and fluorescence microscope test. The results indicated that SBR latex primarily impacts the low-temperature performance of emulsified asphalt, and water-borne epoxy resin (WER) demonstrated better distribution than oil-borne epoxy resin (OER). The recommended dosage of SBR is 3% and for WER is 2–6%. The partially replacing mineral fillers with anti-freezing fillers in composite modified emulsified asphalt was investigated. Four different anti-freezing fillers replacement ratios, which include 0%, 35%, 70% and 100%, were adopted to assess the influence of anti-freezing fillers, and optimum anti-freezing fillers replacement ratio was proposed. MSCR test results demonstrated that anti-freezing fillers were detrimental to the high-temperature performance of emulsified asphalt. It is recommended that the proportion of anti-freezing fillers replacing mineral powder ranges from 35 to 70%. Based on the research results, specimens of anti-freezing micro-surfacing were prepared. The cohesion test, wet wheel abrasion test and ice melting test were employed to evaluate the molding speed, wear resistance and anti-freezing performance of the anti-freezing micro-surfacing. It was found that the anti-freezing micro-surfacing exhibits good wear resistance, with no aggregate peeling observed on its surface after long-term wear. Furthermore, the anti-freezing micro-surfacing can continuously and stably release active ingredients, fulfilling long-term ice melting requirements. This technology not only extends pavement service life but also reduces environmental risks associated with salt-based deicers, offering a dual solution for winter road safety and cleaner infrastructure maintenance.