本文關(guān)鍵詞： 橡膠瀝青 參數(shù)組合 配合比設(shè)計(jì) 路用性能 施工工藝　出處：《長(zhǎng)安大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：科技部“十一五”重點(diǎn)研究項(xiàng)目中對(duì)于中國(guó)將著力建設(shè)資源節(jié)約型、環(huán)境友好型，深入貫徹節(jié)約資源和保護(hù)環(huán)境的基本國(guó)策做了重大指示。橡膠粉作為基質(zhì)瀝青的改性劑不僅能改善基質(zhì)瀝青的使用性能，提高路面服務(wù)質(zhì)量，延長(zhǎng)使用壽命，同時(shí)還可以無(wú)公害，資源化的充分利用了大量的廢舊輪胎，對(duì)我國(guó)走可持續(xù)發(fā)展道路，緩解廢舊輪胎帶來(lái)的環(huán)境壓力具有重大意義。 本文主要首先通過(guò)室內(nèi)試驗(yàn)，重點(diǎn)分析膠粉摻量、膠粉目數(shù)、攪拌溫度和攪拌時(shí)間對(duì)橡膠瀝青性能的影響，通過(guò)極差分析確定制備橡膠瀝青最佳改性參數(shù)組合；其次通過(guò)馬歇爾試驗(yàn)法，分別對(duì)連續(xù)級(jí)配、間斷級(jí)配和斷級(jí)配的橡膠瀝青混合料進(jìn)行配合比設(shè)計(jì)，基于高溫車(chē)轍試驗(yàn)、低溫彎曲試驗(yàn)、凍融劈裂試驗(yàn)和疲勞試驗(yàn)對(duì)不同級(jí)配混合料性能進(jìn)行檢驗(yàn)；最后通過(guò)試驗(yàn)路的鋪筑，檢驗(yàn)了斷級(jí)配橡膠瀝青混合料的施工質(zhì)量，總結(jié)橡膠瀝青混合料的施工工藝。 試驗(yàn)結(jié)果表明：不同參數(shù)組合下橡膠瀝青性能不同，膠粉摻量是影響橡膠瀝青性能的最顯著因素，膠粉目數(shù)影響程度次之，推薦橡膠瀝青最佳參數(shù)組合為膠粉摻量22%，膠粉目數(shù)為80目，攪拌時(shí)間60min，攪拌溫度200℃；不同級(jí)配間橡膠瀝青最佳用量存在較大的區(qū)別，間斷級(jí)配和斷級(jí)配最佳瀝青用量較大，較連續(xù)級(jí)配分別增加了32.1%和39.3%，最佳瀝青用量下不同級(jí)配橡膠瀝青混合料均表現(xiàn)出較好的體積指標(biāo)。橡膠瀝青混合料高溫穩(wěn)定性、低溫抗裂性、水穩(wěn)定性和疲勞性能較基質(zhì)瀝青均有較大的提高，表明添加膠粉有助于改善混合料的各項(xiàng)性能。對(duì)于不同級(jí)配的橡膠瀝青混合料，間斷級(jí)配的高溫穩(wěn)定性和低溫抗裂性要優(yōu)于連續(xù)級(jí)配和斷級(jí)配，，但在水穩(wěn)定性能略低于斷級(jí)配，對(duì)不同級(jí)配橡膠瀝青混合料的性能分析，確定橡膠瀝青更適合于間斷級(jí)配SMA；原材料和施工過(guò)程是影響橡膠瀝青施工質(zhì)量的最重要因素，應(yīng)嚴(yán)格控制相應(yīng)的技術(shù)指標(biāo)和要求，重點(diǎn)對(duì)拌和、運(yùn)輸、攤鋪和碾壓幾個(gè)階段的溫度進(jìn)行控制，進(jìn)而保證橡膠瀝青混合料質(zhì)量符合規(guī)范要求。
[Abstract]:In the key research projects of the 11th Five-Year Plan of the Ministry of Science and Technology, China will focus on building resource-saving and environment-friendly projects. The basic state policy of saving resources and protecting the environment has been carried out in depth. Rubber powder as the modifier of asphalt can not only improve the performance of asphalt, improve the service quality of pavement, but also prolong the service life. At the same time, it can also make full use of a large number of waste tires, which is of great significance for our country to take the road of sustainable development and alleviate the environmental pressure brought by waste tires. In this paper, the effects of rubber powder content, rubber powder mesh number, stirring temperature and stirring time on the performance of rubber asphalt were analyzed. The optimum modification parameters of rubber asphalt were determined by range analysis. Secondly, through Marshall test method, mix ratio design of rubber asphalt mixture with continuous gradation, discontinuous gradation and broken gradation is carried out, based on high temperature rutting test and low temperature bending test. Freeze-thaw splitting test and fatigue test are used to test the performance of different gradation mixture. Finally, the construction quality of rubber asphalt mixture is tested by paving test road, and the construction technology of rubber asphalt mixture is summarized. The test results show that the rubber asphalt performance is different under different parameters, the content of rubber powder is the most significant factor affecting the rubber asphalt performance, and the rubber powder mesh number affects the degree of rubber asphalt performance. It is recommended that the best parameter combination of rubber asphalt is 22% rubber powder, 80 mesh rubber powder, 60 min agitation time and 200 鈩

本文編號(hào)：1553099