本文關(guān)鍵詞： 植物瀝青 摻配比例 高低溫性能 老化指標(biāo) 黏溫曲線　出處：《內(nèi)蒙古工業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著交通事業(yè)的高速發(fā)展,我國公路建設(shè)也突飛猛進(jìn),對(duì)路面材料的需求量也大幅度增加。然而由于石油資源的日益枯竭,使得現(xiàn)在路面鋪設(shè)大量運(yùn)用的石油瀝青價(jià)格不斷攀升,同時(shí)石油瀝青也不易降解,翻修所得廢舊瀝青利用率低,污染環(huán)境。這就需要尋求某種代替品或是一種可再生的環(huán)保瀝青,植物瀝青的規(guī)�；a(chǎn)為其提供了新的途徑。植物瀝青主要來源于植物基化工醇下游產(chǎn)品,即植物油煉制后的廢棄物,其不屬于多芳環(huán)復(fù)雜化合物,主要成分為脂肪酸及植物醇,因此具有低碳,環(huán)保,可再生的優(yōu)勢(shì)。若能利用植物瀝青代替部分石油瀝青,既能夠降低部分成本,又能減少污染,因此本課題擬將植物瀝青按不同摻配比例摻入基質(zhì)瀝青進(jìn)行對(duì)比研究,確定植物瀝青的摻入對(duì)基質(zhì)瀝青及其混合料各個(gè)方面性能的影響,從而判斷其應(yīng)用前景,為植物瀝青在道路工程中的應(yīng)用提供依據(jù)。實(shí)驗(yàn)主要分為三大部分,第一部分主要考察植物瀝青的摻入對(duì)基質(zhì)瀝青原材料的性能影響;第二部分主要利用SHRP相關(guān)實(shí)驗(yàn)考察植物瀝青對(duì)基質(zhì)瀝青低溫性能與黏度的影響;第三部分主要考察摻配植物瀝青對(duì)其混合料路用性能的影響。首先,對(duì)不同摻配比例的混合瀝青在不同溫度下進(jìn)行三大指標(biāo)實(shí)驗(yàn),實(shí)驗(yàn)認(rèn)為摻入植物瀝青后能夠明顯改善原基質(zhì)瀝青的高低溫性能,同時(shí)降低混合瀝青感溫性能。再對(duì)混合瀝青進(jìn)行老化實(shí)驗(yàn),根據(jù)殘留針入度比與軟化點(diǎn)升降數(shù)值可以看出,植物瀝青的摻配能夠改善90號(hào)基質(zhì)瀝青的抗老化性能,但長(zhǎng)期老化方面改善效果并不十分明顯。其次,對(duì)不同摻配比例的混合瀝青進(jìn)行低溫彎曲梁流變實(shí)驗(yàn),實(shí)驗(yàn)認(rèn)為植物瀝青使得90號(hào)基質(zhì)瀝青的應(yīng)力松弛性能更好,抗裂性能更佳。再利用布洛克菲爾德黏度計(jì)繪制黏溫曲線,所確定的混合瀝青壓實(shí)及拌合溫度隨植物瀝青摻配量的增加逐漸升高,且均符合規(guī)范規(guī)定。最后,利用已確定的拌合和壓實(shí)溫度,在相同油石比及礦料級(jí)配下對(duì)比混合料性能指標(biāo)變化趨勢(shì)。實(shí)驗(yàn)發(fā)現(xiàn),當(dāng)植物瀝青摻配達(dá)到10%以上時(shí),其馬歇爾試件性能有所下降,亦不滿足規(guī)范要求,就當(dāng)前5.1的油石比下,植物瀝青的摻量應(yīng)控制在10%以下,既有利于保證其性能發(fā)揮,又能保證經(jīng)濟(jì)效益。
[Abstract]:With the rapid development of the transportation industry, the highway construction in China is also advancing by leaps and bounds, and the demand for pavement materials is also increasing by a large margin. However, due to the increasingly depleted oil resources. It makes the price of petroleum asphalt which is used in a large number of pavement is rising, and it is not easy to degrade the petroleum asphalt, so the utilization ratio of waste asphalt is low. Pollution of the environment. This requires the search for some substitute or a renewable environmental protection asphalt, the large-scale production of plant asphalt provides a new way for it. The plant asphalt mainly comes from the downstream products of phytochemical alcohols. That is, plant oil after refining waste, it does not belong to polyaromatic complex compounds, the main components are fatty acids and plant alcohols, so it has low carbon, environmental protection. Renewable advantages. If plant asphalt can be used to replace some petroleum bitumen, it can not only reduce the cost but also reduce the pollution. Therefore, this paper intends to make a comparative study on the effect of plant asphalt on the performance of matrix asphalt and its mixture in different proportion, so as to judge its application prospect. The experiment is divided into three parts. The first part mainly studies the effect of plant asphalt on the performance of raw materials of asphalt matrix. In the second part, the effects of plant asphalt on the low temperature performance and viscosity of the base asphalt were investigated by SHRP experiments. The third part mainly studies the influence of mixed vegetable asphalt on its pavement performance. Firstly, three indexes of mixed asphalt with different blending ratio are tested at different temperatures. The experimental results show that the high and low temperature performance of the original asphalt can be improved and the temperature sensitivity of the mixed asphalt can be reduced by adding the plant asphalt. Then the aging test of the mixed asphalt is carried out. According to the residual penetration ratio and softening point value, it can be seen that the blending of vegetable asphalt can improve the aging resistance of 90 # matrix asphalt, but the effect of long-term aging improvement is not very obvious. Secondly. The rheological experiment of low temperature bending beam of mixed asphalt with different blending ratio shows that vegetable asphalt makes the stress relaxation performance of 90 # matrix asphalt better. The temperature of compaction and mixing of mixed asphalt increased gradually with the increase of plant asphalt admixture, and all of them were in accordance with the specification. Finally, it was found that the compaction temperature and mixing temperature of mixed asphalt increased with the increase of the blending amount of vegetable asphalt, and all of them were in accordance with the specifications. By using the determined mixing and compaction temperature, the change trend of mixture performance index is contrasted under the same oil stone ratio and ore gradation. It is found that when the blending of vegetable asphalt reaches more than 10%. The performance of the Marshall specimen has declined, and it does not meet the requirements of the specification. Under the current ratio of 5. 1 oil and stone, the content of vegetable asphalt should be controlled below 10%, which is beneficial to ensure the performance of the asphalt. It can also guarantee economic benefits.
【學(xué)位授予單位】：內(nèi)蒙古工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U414

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 耿九光;戴經(jīng)梁;;再生瀝青混合料最佳拌和溫度及壓實(shí)溫度研究[J];公路;2011年04期

2 趙延慶;潘友強(qiáng);候俊;;細(xì)集料毛體積相對(duì)密度測(cè)定方法分析[J];中外公路;2008年04期

3 李寧利;張彩利;肖慶一;李戶輝;;瀝青抗老化性能評(píng)價(jià)指標(biāo)[J];河北工業(yè)大學(xué)學(xué)報(bào);2013年02期

4 黃云鵬;;馬歇爾穩(wěn)定度儀的檢校驗(yàn)說明及標(biāo)定小結(jié)[J];計(jì)量與測(cè)試技術(shù);2012年02期

5 王曉輝;司南;葉愛英;姚成;;植物油腳的綜合利用[J];現(xiàn)代化工;2006年11期

，

本文編號(hào)：1445573