本文選題：瀝青混合料　切入點：紫外線老化　出處：《西安建筑科技大學》2015年碩士論文

【摘要】：我國青藏高原、內(nèi)蒙古高原、陜甘黃土高原地區(qū)海拔高氣壓低、太陽年輻射時數(shù)長,因強紫外線輻射引起的瀝青路面老化現(xiàn)象日趨嚴重,瀝青混合料的紫外線老化問題越來越受到人們的關注。分析瀝青混合料紫外線老化影響因素,認識不同因素對瀝青混合料紫外線老化的影響規(guī)律,對深入研究瀝青混合料紫外線老化現(xiàn)象及老化機理具有重要的意義。論文首先對太陽紫外輻射光譜及瀝青紫外老化機理做了簡要分析,確定使用與太陽紫外輻射光譜相似的紫外高壓汞燈作為光源,構建室內(nèi)紫外線老化環(huán)境箱,然后從紫外線輻射強度及輻射時長、瀝青性質(zhì)、礦料級配、油石比四個方面,通過室內(nèi)紫外線老化試驗,以動穩(wěn)定度和低溫劈裂強度作為高低溫性能的評價指標,對瀝青混合料紫外線老化影響因素進行了詳細研究,給出了各因素對瀝青混合料高低溫性能紫外線老化的影響規(guī)律,最后運用灰色關聯(lián)分析方法對瀝青混合料紫外線老化影響因素進行分析,明確了動穩(wěn)定度及低溫劈裂強度紫外線老化影響因素的排序,為強紫外線輻射地區(qū)瀝青路面的設計工作提供理論依據(jù)。外部環(huán)境因素,尤其是紫外線輻射強度是影響瀝青混合料高低溫性能紫外線老化的最主要因素。從關鍵篩孔通過率及瀝青性能指標的排序來看,礦料級配對瀝青混合料高低溫性能紫外線老化的影響程度大于瀝青結合料。在級配組成中,0.075mm篩孔通過率對動穩(wěn)定度紫外線老化的影響最大,而4.75mm篩孔通過率對低溫劈裂強度紫外線老化的影響最大;在瀝青性能指標中,軟化點對動穩(wěn)定度紫外線老化的影響較大,而針入度對低溫劈裂強度紫外線老化的影響較大。
[Abstract]:In China, the Qinghai-Tibet Plateau, the Inner Mongolia Plateau and the Shaanxi-Gansu Loess Plateau area have high air pressure, long annual solar radiation hours, and the aging phenomenon of asphalt pavement caused by strong ultraviolet radiation is becoming more and more serious. People pay more and more attention to the problem of ultraviolet aging of asphalt mixture. This paper analyzes the influencing factors of ultraviolet aging of asphalt mixture, and recognizes the influence law of different factors on ultraviolet aging of asphalt mixture. It is of great significance to study the ultraviolet aging phenomenon and aging mechanism of asphalt mixture. Firstly, the ultraviolet radiation spectrum of the sun and the ultraviolet aging mechanism of asphalt are briefly analyzed in this paper. The ultraviolet high-pressure mercury lamp, which is similar to the ultraviolet radiation spectrum of the sun, is used as the light source to construct the indoor ultraviolet aging environment box. Then the ultraviolet radiation intensity and radiation duration, the asphalt property, the gradation of the mineral aggregate and the ratio of oil and stone are four aspects. Taking dynamic stability and low temperature splitting strength as the evaluation index of high and low temperature performance, the influence factors of ultraviolet aging of asphalt mixture were studied in detail through ultraviolet aging test. The influence of various factors on the ultraviolet aging of asphalt mixture at high and low temperature is given. Finally, the influence factors of ultraviolet aging of asphalt mixture are analyzed by using grey relation analysis method. The order of influence factors of dynamic stability and low temperature splitting strength on ultraviolet aging is determined, which provides theoretical basis for the design of asphalt pavement in the area of strong ultraviolet radiation. In particular, the ultraviolet radiation intensity is the most important factor that affects the high and low temperature performance of asphalt mixture. The influence of mineral gradation on the UV aging of asphalt mixture at high and low temperature is greater than that on bituminous binder. In the gradation composition, the passing rate of 0.075mm sieve hole has the greatest influence on the dynamic stability of UV aging. However, the pass rate of 4.75mm sieve hole has the greatest effect on the UV aging of low temperature splitting strength, and the softening point has a great effect on the dynamic stability ultraviolet aging, while the penetration on the low temperature splitting strength UV aging.
【學位授予單位】：西安建筑科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U414

【參考文獻】

相關期刊論文 前10條

1 吳歡;梁乃興;;SBR改性瀝青混合料紫外光照老化分析[J];重慶交通學院學報;2007年02期

2 李學全;灰色關聯(lián)度量化模型的進一步研究[J];系統(tǒng)工程;1995年06期

3 朱洪洲,黃曉明;瀝青混合料高溫穩(wěn)定性影響因素分析[J];公路交通科技;2004年04期

4 趙艷林,韋樹英,梅占馨;灰色歐幾里德關聯(lián)度[J];廣西大學學報(自然科學版);1998年01期

5 賈逸勤;;機場瀝青道面用基質(zhì)瀝青紫外光老化特性[J];中外公路;2013年05期

6 何文華;郭韋韋;楊群;;氙燈加速老化對瀝青混合料性能的影響[J];華東交通大學學報;2012年02期

7 胡行俊;合成材料的大氣老化[J];合成材料老化與應用;2005年02期

8 徐鷗明;韓森;李洪軍;;克拉瑪依重交通90~#及其SBS改性瀝青紫外線老化研究[J];武漢理工大學學報(交通科學與工程版);2007年01期

9 李立寒,曹林濤,羅芳艷,郭亞兵;瀝青混合料劈裂抗拉強度影響因素的研究[J];建筑材料學報;2004年01期

10 范凱,吳皓瑩;灰色系統(tǒng)關聯(lián)度中一種新的分辨系數(shù)確定方法[J];武漢理工大學學報;2002年07期

相關博士學位論文 前1條

1 龐凌;瀝青紫外光老化特性研究[D];武漢理工大學;2008年

，

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