本文關(guān)鍵詞： 瀝青老化 定量分析 納米形態(tài) 粘附力 官能團(tuán)　出處：《蘇州科技大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：瀝青混合料路面在施工期間和使用過程中由于受到雨水、日照和荷載等因素的作用,容易發(fā)生老化,影響瀝青路面的使用壽命,尤其是OGFC-13瀝青混合料路面。本文對不同老化程度的基質(zhì)瀝青、SBS改性瀝青和OGFC-13瀝青混合料抽提出的瀝青,進(jìn)行微觀特性(納米形貌、粘附力和官能團(tuán)等)分析和定量表征,探究其內(nèi)在聯(lián)系和老化機(jī)理。對不同老化程度的基質(zhì)瀝青、SBS改性瀝青和OGFC-13瀝青混合料抽提出的瀝青,進(jìn)行原子力顯微鏡和紅外光譜等測試,定量表征瀝青微觀形態(tài)(“蜂狀結(jié)構(gòu)”的數(shù)量、平均面積、最大面積、波長、波峰和高度圖均方根粗糙度等)、相、粘附力、羰基指數(shù)、亞砜基指數(shù)和丁二烯基指數(shù)。同時,對瀝青分子量的老化機(jī)理進(jìn)行定量分析。結(jié)果表明:(1)瀝青“蜂狀結(jié)構(gòu)”形態(tài)特征由波峰和波谷構(gòu)成,瀝青老化后,單個“蜂狀結(jié)構(gòu)”波長、半峰寬、波峰(波谷)高度和面積等尺寸均有不同程度的增加;(2)老化影響瀝青的納米力學(xué)性能,瀝青表面不同的微區(qū)可能具有不同的粘附力,其中“蜂狀結(jié)構(gòu)”粘附力最低;(3)老化引起瀝青羰基和亞砜基等含氧官能團(tuán)含量增加,并促使SBS改性劑老化降解;(4)OGFC-13瀝青混合料所用的礦粉和木質(zhì)素纖維在1030cm-1附近均出現(xiàn)了明顯的特征峰,而波數(shù)在1700cm-1附近和966cm-1附近均沒有明顯的特征峰出現(xiàn);(5)瀝青官能團(tuán)的化學(xué)特性變化與微觀形態(tài)等變化有良好關(guān)系;(6)OGFC-13瀝青混合料老化后,瀝青中的大分子粒徑比例增加,小分子粒徑比例減小,瀝青中的大分子粒徑比例和小分子粒徑比例與官能團(tuán)化學(xué)特性及微觀形態(tài)等因子之間具有良好關(guān)系。
[Abstract]:Due to the effect of Rain Water, sunshine and load on asphalt mixture pavement during construction and use, it is easy to aging and affect the service life of asphalt pavement. Especially for OGFC-13 asphalt mixture pavement. In this paper, the microcosmic properties (nano-morphology, adhesion and functional groups) of the bitumen extracted from the asphalt mixture of OGFC-13 modified asphalt and OGFC-13 asphalt mixture with different aging degree were analyzed and quantitatively characterized. The internal relation and aging mechanism were studied. The bitumen extracted from the asphalt mixture of OGFC-13 and OGFC-13 was tested by atomic force microscope (AFM) and infrared spectroscopy (FT-IR). Quantitative characterization of the number, average area, maximum area, wavelength, peak and height map RMS roughness, phase, adhesion, carbonyl index, sulfoxide index and butadienyl index of bitumen ("bee like structure"). The aging mechanism of asphalt molecular weight is quantitatively analyzed. The results show that the "bee structure" of asphalt is composed of wave peaks and troughs. After asphalt aging, the single "bee structure" wavelength and the half peak width are obtained. Wave peak (trough) height and area are increased in different degrees) aging affects the nano-mechanical properties of asphalt, and different micro-areas on the surface of asphalt may have different adhesion. The content of oxygen-containing functional groups such as carbonyl group and sulfoxide group increased due to the aging of "bee like structure". The results show that the mineral powder and lignin fiber used in the SBS modifier can degrade the mineral powder and lignin fiber in 1030cm ~ (-1), and the characteristic peaks appear in the vicinity of 1030cm ~ (-1). However, there is no obvious characteristic peak in the vicinity of 1700cm-1 and 966cm-1. There is a good relationship between the changes of the chemical properties of the functional groups and the changes of the microscopic morphology. After aging, the particle size ratio of the macromolecules in the asphalt increases. The particle size ratio of small molecule decreases, and the ratio of macromolecule diameter and small molecule particle size in asphalt has a good relationship with the chemical properties of functional groups and micromorphology.
【學(xué)位授予單位】：蘇州科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U414

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張正宇;代震;劉奔;石鵬程;沈菊男;;基于納米形態(tài)的瀝青老化微觀機(jī)理探討[J];華東公路;2016年05期

2 劉奔;沈菊男;石鵬程;;老化瀝青納米尺度微觀特性及其官能團(tuán)性能[J];公路交通科技;2016年02期

3 楊軍;王瀟婷;龔明輝;陳先華;焦麗亞;;瀝青原子力顯微鏡微觀圖像的特征分析[J];石油學(xué)報(石油加工);2015年05期

4 楊軍;龔明輝;PAULI Troy;魏建明;王瀟婷;;基于原子力顯微鏡的瀝青微觀結(jié)構(gòu)研究[J];石油學(xué)報(石油加工);2015年04期

5 李寧利;趙新坡;孫吉書;肖慶一;;橡膠瀝青老化機(jī)理研究[J];公路交通科技;2015年07期

6 盧寶忠;;基于原子力顯微鏡技術(shù)的瀝青微觀力學(xué)特性研究[J];交通建設(shè)與管理;2015年08期

7 張碧琴;趙高揚(yáng);李堅強(qiáng);張富強(qiáng);;基質(zhì)瀝青老化過程中基本指標(biāo)和組分變化的研究[J];筑路機(jī)械與施工機(jī)械化;2015年01期

8 馬峰;傅珍;欒媛媛;;基于凝膠滲透色譜分析的天然瀝青高溫性能機(jī)理[J];功能材料;2014年23期

9 胡建榮;;瀝青老化預(yù)估方程研究[J];公路工程;2013年01期

10 張紅梅;邊開磊;劉圣潔;徐東;;基于灰色突變理論的瀝青老化行為分析[J];鄭州大學(xué)學(xué)報(工學(xué)版);2013年01期

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本文編號：1500965