本文選題：乳化瀝青再生 + 配合比設(shè)計(jì)��； 參考：《重慶交通大學(xué)》2015年碩士論文

【摘要】：隨著社會(huì)經(jīng)濟(jì)的快速發(fā)展、交通量和車輛載重的增加,導(dǎo)致路面病害越來越多,在90年代以后陸續(xù)建成的高速公路已進(jìn)入大、中修期,目前的高速公路維修方式多為挖除或覆蓋,重新鋪筑新路面。而挖除的材料基本被廢棄,其中瀝青發(fā)生部分老化外,砂石等材料的功能依然存在。大量的翻挖、銑刨瀝青混合料被廢棄造成環(huán)境污染;另一方面,能源危機(jī)成為世界各國發(fā)展面臨的一個(gè)重要問題。在此背景下,瀝青路面重復(fù)再生利用,顯得尤為重要。瀝青路面冷再生技術(shù)是在20世紀(jì)80年代后期,路面冷銑刨工藝的基礎(chǔ)上迅速發(fā)展起來的一種新技術(shù),目前已成為世界各國道路維修改造的方法之一。本文首先對(duì)可回收瀝青路面材料(RAP)中的瀝青進(jìn)行了回收和測定,通過篩分,確定了舊料的級(jí)配曲線和石料的各項(xiàng)性能。同時(shí),對(duì)試驗(yàn)中所用的乳化瀝青、水泥以及集料的性能進(jìn)行了測定。然后,采用修正的馬歇爾試驗(yàn)方法進(jìn)行配合比設(shè)計(jì),以劈裂強(qiáng)度、馬歇爾穩(wěn)定度、流值、抗壓強(qiáng)度和孔隙率作為評(píng)價(jià)指標(biāo),綜合考慮混合料的水泥用量、乳化瀝青用量、舊料摻量和總用水量,確定最佳配合比。為研究各因素對(duì)劈裂強(qiáng)度的影響,以乳化瀝青、水泥和水這三因素進(jìn)行正交試驗(yàn)設(shè)計(jì),分析各因素對(duì)乳化瀝青冷再生混合料劈裂強(qiáng)度影響的顯著性。采用SPSS軟件對(duì)試驗(yàn)結(jié)果進(jìn)行方差檢驗(yàn),確定各影響因素的顯著水平和各水平的作用大小。在試驗(yàn)溫度為5℃、15℃和20℃的條件下,進(jìn)行再生混合料間接拉伸疲勞試驗(yàn),分析不同含量的乳化瀝青、水泥這兩因素對(duì)間接拉伸疲勞試驗(yàn)結(jié)果的影響。利用統(tǒng)計(jì)學(xué)原理對(duì)間接拉伸疲勞試驗(yàn)進(jìn)行分析,提出疲勞壽命方程和瀝青再生混合料疲勞性能預(yù)估模型。最后綜合考慮各種影響因素,對(duì)室內(nèi)疲勞試驗(yàn)預(yù)估方程進(jìn)行科學(xué)合理的修正,轉(zhuǎn)化為實(shí)際路面疲勞壽命情況,同時(shí)得出了再生混合料的抗拉強(qiáng)度結(jié)構(gòu)系數(shù)。
[Abstract]:With the rapid development of social economy and the increase of traffic volume and vehicle load, more and more pavement diseases have been caused. The current highway maintenance mode is to excavate or cover, rebuild the new road surface. The excavated materials are basically abandoned. Besides the partial aging of asphalt, the functions of sand and stone still exist. A large number of overturning, milling and planing asphalt mixture waste caused environmental pollution; on the other hand, the energy crisis has become an important problem facing the development of countries in the world. In this context, the recycling of asphalt pavement is particularly important. The cold recycling technology of asphalt pavement is a new technology developed rapidly on the basis of cold milling and planing technology in the late 1980s. It has become one of the methods of road maintenance and reconstruction in the world. In this paper, the asphalt in recycled asphalt pavement material (rap) is first recovered and measured. Through screening, the gradation curve of the old material and the properties of the stone are determined. At the same time, the properties of emulsified asphalt, cement and aggregate used in the test were measured. Then, the modified Marshall test method is used to design the mixture ratio. The splitting strength, Marshall stability, flow value, compressive strength and porosity are taken as evaluation indexes, and the cement content and emulsified asphalt content of the mixture are considered synthetically. The best mix ratio is determined by adding the used materials and the total water consumption. In order to study the effect of various factors on the splitting strength, the orthogonal experimental design was carried out with the three factors of emulsified asphalt, cement and water, and the significance of each factor on the splitting strength of cold recycled asphalt mixture was analyzed. SPSS software was used to test the variance of the test results to determine the significant level of each factor and the effect of each level. The indirect tensile fatigue test of recycled mixture was carried out at 5 鈩，

本文編號(hào)：1956743