瀝青路面就地?zé)嵩偕鸀r青配伍性研究
本文關(guān)鍵詞：瀝青路面就地?zé)嵩偕鸀r青配伍性研究 出處：《南京林業(yè)大學(xué)》2014年碩士論文 論文類型：學(xué)位論文
更多相關(guān)文章： 就地?zé)嵩偕?/b> 配伍性 再生瀝青 紅外光譜 路用性能
【摘要】：隨著我國(guó)公路事業(yè)的快速發(fā)展，公路大規(guī)模建設(shè)帶來了繁重的養(yǎng)護(hù)維修任務(wù)，瀝青路面再生技術(shù)在公路養(yǎng)護(hù)維修中越來越被關(guān)注。再生瀝青混合料通常由新瀝青、新集料、舊瀝青、再生劑、舊集料按照不同比例設(shè)計(jì)后組成，，舊瀝青、再生劑、新瀝青三者之間的配伍性直接關(guān)系到再生瀝青混合料的路用性能。本文結(jié)合依托工程項(xiàng)目，對(duì)瀝青路面就地?zé)嵩偕鸀r青配伍性進(jìn)行研究，為合理選用再生劑和新瀝青提供科學(xué)的依據(jù)。 首先對(duì)回收的舊路面材料進(jìn)行評(píng)價(jià)分析，根據(jù)瀝青的老化和再生機(jī)理，選配A型再生劑、B型再生劑、C型再生劑按照3%，5%，7%，10%的摻配比例與舊瀝青進(jìn)行配伍性試驗(yàn)，測(cè)定相關(guān)性能試驗(yàn)指標(biāo)，綜合分析確定摻配6%配伍性最優(yōu)的A型再生劑對(duì)舊瀝青進(jìn)行再生。 其次將摻配6%A型再生劑的再生瀝青分別與SK-70#瀝青、中海-70#瀝青按照10%，20%，30%，40%的摻配比例進(jìn)行配伍性試驗(yàn)，測(cè)定相關(guān)性能試驗(yàn)指標(biāo)，綜合分析優(yōu)選配伍性較好的SK-70#瀝青摻配，確定新瀝青的摻量范圍為30%～40%。 然后對(duì)回收的老化瀝青、摻配6%A型再生劑的再生瀝青、摻配30%SK-70#瀝青的混合瀝青進(jìn)行紅外光譜分析，紅外光譜分析結(jié)果表明羰基（C=O）的出現(xiàn)是瀝青老化的一個(gè)重要特征，瀝青老化后亞砜基（S=O）數(shù)量增加。由于物理共融作用，再生劑的組分引起再生瀝青的組分發(fā)生變化，新瀝青的組分引起混合瀝青的組分發(fā)生變化。再生瀝青和混合瀝青中均以-CH2-的吸收峰最強(qiáng)。 最后對(duì)摻配不同比例新瀝青混合料的復(fù)拌就地?zé)嵩偕鸀r青混合料的路用性能展開了研究，結(jié)合新瀝青混合料不同摻配比例下路用性能試驗(yàn)數(shù)據(jù)，參考不同新料摻配比例下實(shí)際添加瀝青與再生瀝青配伍性試驗(yàn)結(jié)果，考慮到依托工程項(xiàng)目所在地理位置、氣候條件等因素對(duì)復(fù)拌就地?zé)嵩偕鸀r青混合料路用性能的要求，從經(jīng)濟(jì)效益及滿足路面使用性能方面，綜合分析擬定添加20%新瀝青混合料。
[Abstract]:With the rapid development of highway industry in China, large-scale highway construction has brought heavy maintenance and maintenance tasks. The recycled asphalt mixture is usually composed of new asphalt, new aggregate, old asphalt, recycled agent and old aggregate according to different proportion design. The compatibility of recycled asphalt and new asphalt is directly related to the pavement performance of recycled asphalt mixture. It provides a scientific basis for the rational selection of regenerating agent and new asphalt. Firstly, the recycled old pavement materials are evaluated and analyzed. According to the aging and regeneration mechanism of asphalt, a type of regenerative agent, type A, type B, and type B, type C, are selected according to the ratio of 3% to 5%. The compatibility test of 10% admixture ratio with old asphalt was carried out, and the related performance test indexes were measured, and the comprehensive analysis was made to determine that the type A regenerative agent with the best compatibility of 6% was used to regenerate the old asphalt. Secondly, the recycled asphalt mixed with 6 / A regenerative agent and SK-70# asphalt respectively, and Zhonghai -70# asphalt were tested according to the proportion of 10 ~ 20 ~ 30 ~ 40% mixed with each other. The relative performance test index was measured and the blending of SK-70# asphalt with good compatibility was analyzed synthetically and the range of new asphalt was determined to be 30% 40%. Then, the recycled asphalt, the recycled asphalt mixed with 6A regenerative agent and the mixed asphalt mixed with 30SK-70# asphalt were analyzed by infrared spectroscopy. The results of infrared spectrum analysis show that the appearance of carbonyl Con O) is an important feature of asphalt aging, and the number of sulfoxyl Schio) increases after asphalt aging, due to physical co-melting. The component of recycled asphalt changed and the component of new asphalt changed. The absorption peak of -CH2- was the strongest in recycled asphalt and mixed asphalt. Finally, the remixing of new asphalt mixture with different proportions is studied on the road performance of geothermal recycled asphalt mixture, combined with the new asphalt mixture mixed with different proportion of road performance test data. According to the experimental results of compatibility of asphalt and recycled asphalt with different blending ratio of new materials, the geographical location of the project is considered. From the aspects of economic benefit and pavement performance, this paper comprehensively analyzes the requirements of road performance of remix and remix recycled asphalt mixture, and proposes the addition of 20% new asphalt mixture.
【學(xué)位授予單位】：南京林業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U414
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