發(fā)布時間：2018-04-13 12:22

  本文選題：疏水涂層 + 疏水封層　； 參考：《長安大學(xué)》2017年碩士論文

【摘要】：道路行車安全是當(dāng)今全球各個國家普遍關(guān)注的最為主要的問題之一。冬季道路表面積雪結(jié)冰會對車輛行駛安全構(gòu)成嚴重威脅,如果不能得及時有效清除道路表面冰層,不但會影響道路行車,并且會給人民生命財產(chǎn)帶來重大損失。因此,研究經(jīng)濟、有效、無害的道路防結(jié)冰技術(shù),保證道路的行車安全及抗滑性能,具有極其重要意義。本文在研究分析國內(nèi)外已有路面防結(jié)冰技術(shù)及其優(yōu)缺點基礎(chǔ)上,提出了疏水防冰抗滑路面技術(shù)構(gòu)想。論文采用基于疏水原理的抗凝冰方法,從影響冰雪-路面的粘附力影響因素分析,通過在室內(nèi)試驗、試驗段實施、觀測,研究出具有良好疏水防覆冰性能的瀝青路面技術(shù)。本文根據(jù)浸潤性理論,分析了疏水路面的構(gòu)筑理論,通過在試驗室內(nèi)制備疏水抗凝冰乳化瀝青,并對其疏水性、防覆冰性及相關(guān)路用性能進行深入分析,同時探討疏水涂層抗凝冰效果的評價方法和指標,并對疏水乳化瀝青與各類不同性質(zhì)集料的粘附性進行分析與改善。進一步將疏水乳化瀝青應(yīng)用于微表處混合料中,形成具有疏水功能的封層,并對其界面適應(yīng)性、耐久性及施工工藝等進行了分析與總結(jié)。通過試驗研究,選擇了與乳化瀝青配伍性良好的疏水劑;借助接觸角檢測儀對影響疏水效果的疏水劑細度、摻量及摻入方法等因素進行研究分析,結(jié)果表明,疏水劑細度、摻入量及摻入方法等因素對疏水乳化瀝青的疏水性能影響顯著,但當(dāng)細度、摻入量到達一定程度后,疏水性增幅逐漸減小;通過層間剪切試驗及室內(nèi)防覆冰試驗表明,在推薦疏水乳化瀝青0.3kg/m2灑布量下,疏水瀝青路面能夠降低路面與冰雪的粘結(jié)強度,使冰層更容易被破碎清除,粘附力降低達40%左右;疏水涂層會略微降低路面抗滑性,但仍滿足規(guī)范要求;界面劑的摻入,能夠顯著改善乳化瀝青與集料的粘附性,能夠使疏水涂層及疏水封層更好地適應(yīng)不同路面狀況,且增強其耐久性;疏水防冰封層對于界面的適應(yīng)性較強,能夠適應(yīng)較不利界面條件。疏水防冰封層表現(xiàn)出良好的路用性能與基材粘結(jié)性能優(yōu)于普通微表處混合料;且經(jīng)過磨耗后,疏水封層依然保持較好的疏水性。研究結(jié)果表明,由涂層或封層形成的疏水防冰抗滑瀝青路面具有良好的疏水性、防覆冰性、耐久性以及抗?jié)B透性等特點,有助于降低道路表面與冰層的粘結(jié)強度,從而使道路表面的冰雪更易于清除,無論在室內(nèi)還是實體工程中,都表明該疏水防冰路面具有較好的疏水防覆冰效果。
[Abstract]:Road traffic safety is one of the most important problems in the world.Snow icing on the road surface in winter will pose a serious threat to the driving safety of the vehicle. If the ice layer on the road surface cannot be cleared in time and effectively, it will not only affect the road driving, but also bring great loss of life and property to the people.Therefore, it is of great significance to study the economical, effective and harmless anti-icing technology to ensure the road safety and anti-skid performance.Based on the research and analysis of the existing pavement anti-icing technology at home and abroad and its advantages and disadvantages, the technical conception of hydrophobic anti-ice anti-skid pavement is put forward in this paper.Based on the hydrophobic principle of anticoagulant ice, the paper analyzes the influencing factors of the adhesion between ice and snow pavement, and studies the asphalt pavement technology with good hydrophobic anti-icing performance through indoor test and test section.Based on the theory of wettability, the construction theory of hydrophobic pavement is analyzed in this paper. The hydrophobic anticoagulant ice emulsified asphalt is prepared in the laboratory, and its hydrophobicity, anti-icing property and related road performance are deeply analyzed.At the same time, the evaluation method and index of anticoagulant ice effect of hydrophobic coating were discussed, and the adhesion of hydrophobic emulsified asphalt to various kinds of aggregates with different properties was analyzed and improved.Further, the hydrophobic emulsified asphalt was applied to the micro-surface mixture to form the sealing layer with hydrophobic function, and its interface adaptability, durability and construction technology were analyzed and summarized.The hydrophobic agent with good compatibility with emulsified asphalt was selected through the experimental study, and the hydrophobic fineness, the amount of the hydrophobic agent and the method of mixing were analyzed with the help of contact angle tester. The results showed that the fineness of the hydrophobic agent was obtained.The hydrophobicity of hydrophobic emulsified asphalt is affected by the factors such as mixing amount and mixing method, but the increase of hydrophobicity decreases gradually when the fineness and dosage reach a certain degree, and the results of interlaminar shear test and indoor anti-icing test show that the hydrophobicity of hydrophobic emulsified asphalt decreases gradually.Under the recommended amount of hydrophobic emulsified asphalt 0.3kg/m2 sprinkler, hydrophobic asphalt pavement can reduce the bond strength between pavement and ice, make the ice layer easier to be broken and clear, and reduce the adhesion force to about 40%, and the hydrophobic coating will slightly reduce the road surface skid resistance.The adhesion of emulsified asphalt to aggregate can be improved obviously, the hydrophobic coating and hydrophobic seal layer can adapt to different pavement conditions, and its durability can be enhanced.The hydrophobic ice seal layer is more adaptable to the interface and can adapt to the unfavorable interface conditions.The hydrophobic ice seal layer shows better road performance and better bonding performance than the ordinary micro-surfacing mixture, and after wear, the hydrophobic seal layer still keeps good hydrophobic.The results show that the hydrophobic anti-ice anti-skid asphalt pavement formed by coating or sealing layer has good hydrophobicity, ice resistance, durability and permeability resistance, which is helpful to reduce the bond strength between the road surface and the ice layer.Therefore, the ice and snow on the road surface can be cleared more easily, both in indoor and in the solid engineering, it shows that the hydrophobic anti-icing pavement has better hydrophobic anti-icing effect.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U416.217

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本文編號：1744469