本文關鍵詞：復合型冷補瀝青混合料在道路養(yǎng)護中分析研究　出處：《長沙理工大學》2015年碩士論文　論文類型：學位論文

  更多相關文章： 道路工程 復合型冷補 耦聯(lián)劑—水泥乳化瀝青混合料 正交試驗 掃描電鏡 養(yǎng)護工程 現(xiàn)場攪拌設備

【摘要】：為了適應我國道路交通的大發(fā)展需要,養(yǎng)護工程領域的新材料和新的施工工藝需要更加深入的研究�；|瀝青通過乳化劑的作用形成乳化瀝青,乳化瀝青、水泥與集料在常溫下拌合得到水泥乳化瀝青混合料,可以用于道路養(yǎng)護修補。同時可以節(jié)約能源,減少對環(huán)境的污染。水泥保持了乳化瀝青混合料常溫拌合的特點,同時還將混合料強度形成時間大大縮短,減少了道路修復需要的通車等待時間。工程實際表明,運用到養(yǎng)護修補方面的水泥乳化瀝青混合料在新舊路面粘結方面還存在問題。因此,本文提出在水泥乳化瀝青混合料中添加耦聯(lián)劑以解決這個問題。本文在借鑒國內外相關研究的基礎上,通過理論與試驗相結合的方法對耦聯(lián)劑-水泥乳化瀝青混合料進行系統(tǒng)地研究。首先,對原材料進行篩選,特別是耦聯(lián)劑的篩選。運用修正后的馬歇爾試驗方法,通過正交試驗方法,分析耦聯(lián)劑用量、瀝青用量及水泥摻量對馬歇爾試件早期、后期馬歇爾力學指標以及旋轉壓實成型試件(常溫7天養(yǎng)生)的單軸抗壓強度的影響。對比馬歇爾試驗和單軸抗壓試驗結果,并考慮混合料性能要求和經(jīng)濟性,推薦原材料適宜摻量為:耦聯(lián)劑水溶液(耦聯(lián)劑:水=1:3)4%,乳化瀝青7-8%,水泥2-3%;各檔集料的比例為9.5~19mm:4.75~9.5mm:0~4.75mm=33:38:27:2。然后,通過CT和掃描電鏡試驗對混合料內部結構進行分析探討。最后為了驗證耦聯(lián)劑在瀝青路面修補中的多種用途,進行了新舊路面之間的層間粘結試驗。在實際施工中,為了避免運輸工程中的乳化瀝青破乳,特別研制了現(xiàn)場攪拌設備。復合型冷補耦聯(lián)劑—水泥乳化瀝青混合料在不降低乳化瀝青混合料性能基礎上,增強了混合料早期強度,大大縮短了通車時間,加強了新舊路面之間的層間粘結。在養(yǎng)護工程日益重要的今天,本文中所提出的耦聯(lián)劑—水泥乳化瀝青混合料和現(xiàn)場攪拌設備的結論都有較明顯的社會效益,值得廣泛的推廣引用。
[Abstract]:In order to meet the needs of the great development of road traffic in our country, the new materials and new construction technology in the field of maintenance engineering need to be studied more deeply. The matrix asphalt forms emulsified asphalt and emulsified asphalt through the action of emulsifier. Cement and aggregate are mixed at room temperature to obtain cement emulsified asphalt mixture, which can be used for road maintenance and repair, and can save energy at the same time. The cement keeps the characteristic of emulsified asphalt mixture mixing at room temperature and shortens the forming time of the mixture strength greatly. The engineering practice shows that the cement emulsified asphalt mixture used in maintenance and repair still has problems in new and old pavement bonding. This paper puts forward adding coupling agent to cement emulsified asphalt mixture to solve this problem. Through the combination of theory and experiment, the coupling agent-cement emulsified asphalt mixture is studied systematically. Firstly, the raw materials are screened. In particular, the selection of coupling agent. By using the modified Marshall test method, through the orthogonal test method, the amount of coupling agent, asphalt content and cement content in the early phase of Marshall specimen were analyzed. The effect of Marshall mechanical index and uniaxial compressive strength of rotating compaction forming specimen (7 days of health preservation at room temperature). The results of Marshall test and uniaxial compression test were compared, and the performance requirements and economy of mixture were considered. The suitable amount of raw materials is recommended as follows: coupling agent aqueous solution (coupling agent: water 1: 3), emulsified asphalt 7-810, cement 2-3; The ratio of aggregates in different grades is 9.5mm: 4.75mm: 9.75mm: 0 / 4.75mm / 33: 38: 272.Then. The internal structure of the mixture was analyzed and discussed by CT and SEM test. Finally, in order to verify the various uses of coupling agent in asphalt pavement repair. In order to avoid emulsified asphalt demulsification in actual construction, the interlayer bond test between new and old pavement is carried out. In particular, the field mixing equipment is developed. The composite cold coupling agent-cement emulsified asphalt mixture enhances the early strength of the mixture and greatly shortens the opening time on the basis of not reducing the performance of the emulsified asphalt mixture. The bond between the new and the old pavement is strengthened. The conclusion of the coupling agent-cement emulsified asphalt mixture and the field mixing equipment proposed in this paper has obvious social benefits today when the maintenance engineering is becoming more and more important. It is worth popularizing and quoting widely.
【學位授予單位】：長沙理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U414

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