本文選題：泡沫瀝青　切入點(diǎn)：發(fā)泡效果　出處：《同濟(jì)大學(xué)》2008年碩士論文　論文類型：學(xué)位論文

【摘要】： 本文通過資料調(diào)研、室內(nèi)試驗(yàn)、理論分析及工程經(jīng)驗(yàn)總結(jié),對(duì)泡沫瀝青冷再生技術(shù)的瀝青發(fā)泡特性和評(píng)價(jià)方法、混合料性質(zhì)及關(guān)聯(lián)因素、材料特征及級(jí)配要求、配合比設(shè)計(jì)過程及工程應(yīng)用經(jīng)驗(yàn)進(jìn)行研究探討,對(duì)該技術(shù)進(jìn)行總結(jié)完善,并力求形成完整的理論體系,以指導(dǎo)今后的室內(nèi)材料設(shè)計(jì)和工程應(yīng)用過程。 通過室內(nèi)瀝青發(fā)泡試驗(yàn),研究瀝青發(fā)泡特性及其影響因素,并探討瀝青發(fā)泡效果和泡沫瀝青再生混合料性能之間的相關(guān)性。試驗(yàn)結(jié)果顯示:瀝青種類、發(fā)泡用水量和發(fā)泡用水溫度顯著影響發(fā)泡效果,而瀝青溫度對(duì)發(fā)泡效果的影響不大;在發(fā)泡用水量增加過程中,5%發(fā)泡用水量前后的發(fā)泡指標(biāo)變化規(guī)律發(fā)生改變;瀝青發(fā)泡效果和泡沫瀝青再生混合料的性能相關(guān)性不顯著。在上述結(jié)論的基礎(chǔ)上,進(jìn)而分析了“最佳發(fā)泡條件”的缺陷,認(rèn)為應(yīng)當(dāng)以“合適發(fā)泡范圍”代替“最佳發(fā)泡條件”,用以指導(dǎo)實(shí)際的工程應(yīng)用。 探討了泡沫瀝青再生混合料的材料特征、級(jí)配設(shè)計(jì)原則與粉料通過百分率標(biāo)準(zhǔn)。從顆粒外觀狀態(tài)入手,分析了銑刨料的分類標(biāo)準(zhǔn)和級(jí)配影響因素。在室內(nèi)數(shù)據(jù)、強(qiáng)度形成機(jī)理和工程經(jīng)驗(yàn)的基礎(chǔ)上,提出了應(yīng)當(dāng)以銑刨料級(jí)配指導(dǎo)泡沫瀝青冷再生的現(xiàn)場(chǎng)施工和級(jí)配設(shè)計(jì)。并針對(duì)粉料目標(biāo)通過率普遍無法達(dá)標(biāo)的我國(guó)工程現(xiàn)狀,設(shè)計(jì)室內(nèi)試驗(yàn)。最終發(fā)現(xiàn)3%的粉料通過率即可獲得性能優(yōu)良的泡沫瀝青再生混合料,因此建議將0.3mm以下篩孔的目標(biāo)通過百分率下限適當(dāng)降低。 本文還優(yōu)化了泡沫瀝青再生混合料的配合比設(shè)計(jì)過程。通過引入正交試驗(yàn)方法,對(duì)現(xiàn)有的單向簡(jiǎn)單的配合比設(shè)計(jì)過程進(jìn)行調(diào)整,使得在配合比設(shè)計(jì)過程中,能夠充分考慮泡沫瀝青用量、拌和用水量、級(jí)配方案等主要設(shè)計(jì)內(nèi)容的相互影響和各種組合,最終同時(shí)確定最佳拌和用水量、最佳級(jí)配方案、最佳瀝青用量等關(guān)鍵設(shè)計(jì)指標(biāo)。
[Abstract]:Based on data investigation, laboratory test, theoretical analysis and engineering experience, the foaming characteristics and evaluation methods, mixture properties and related factors, material characteristics and grading requirements of foamed asphalt cold recycling technology are studied in this paper. In order to guide the design and engineering application of indoor materials in the future, the proportion design process and engineering application experience are studied and discussed, the technology is summarized and perfected, and a complete theoretical system is formed to guide the interior material design and engineering application process in the future. Through the indoor asphalt foaming test, the foaming characteristics of asphalt and its influencing factors are studied, and the correlation between the asphalt foaming effect and the performance of foamed asphalt recycled mixture is discussed. The foaming effect was significantly affected by foaming water consumption and water temperature, but not by bitumen temperature, and the change of foaming index was changed during the process of increasing water consumption by 5%. The correlation between asphalt foaming effect and performance of foamed asphalt recycled mixture is not significant. On the basis of the above conclusion, the defects of "optimum foaming condition" are analyzed. It is suggested that "suitable foaming range" should be replaced by "optimum foaming condition" to guide practical engineering application. This paper discusses the material characteristics, grading design principles and percentage standard of foamed asphalt recycled mixture. Starting with the appearance state of particles, the classification criteria and gradation influencing factors of milling and planing materials are analyzed, and the indoor data are analyzed. On the basis of strength forming mechanism and engineering experience, it is proposed that milling gradation should be used to guide the field construction and grading design of cold regeneration of foamed asphalt. In the design room test, it is found that the fine foamed asphalt recycled mixture can be obtained with the passing rate of 3% powder. Therefore, it is suggested that the target of the sieve hole below 0.3 mm should be reduced properly through the lower limit of the percentage. This paper also optimizes the mix ratio design process of foamed asphalt recycled mixture. By introducing the orthogonal test method, the existing one-way simple mix ratio design process is adjusted, so that in the mix proportion design process, It can fully consider the interaction and combination of the main design contents, such as the amount of foamed asphalt, mixing water consumption, gradation scheme and so on. Finally, the key design indexes such as the best mixing water consumption, the best gradation scheme and the optimum asphalt content can be determined at the same time.
【學(xué)位授予單位】：同濟(jì)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2008
【分類號(hào)】：U414

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