本文選題：道路工程 + 溫拌瀝青混合料��； 參考：《重慶交通大學(xué)學(xué)報(bào)(自然科學(xué)版)》2016年06期

【摘要】：選取有機(jī)添加劑Sasobit和人工沸石兩種溫拌劑,采用東海70號(hào)瀝青配置溫拌瀝青,選取AC-13礦料級(jí)配拌制瀝青混合料。通過黏溫曲線和馬歇爾試件的體積指標(biāo)分別確定兩種溫拌劑各自的最佳摻量;在最佳摻量的條件下通過不同溫度下成型馬歇爾試件和旋轉(zhuǎn)壓實(shí)試件,觀察其空隙率的變化規(guī)律來研究?jī)煞N溫拌瀝青混合料的降溫效果。研究表明:兩種溫拌劑都可降低瀝青的高溫黏度,其黏度隨溫拌劑摻量的增加而減小;Sasobit最佳摻量為3%(與瀝青的比例),在馬歇爾擊實(shí)條件下,加入Sasobit的WMA的成型溫度比HMA的成型溫度降低了14℃;人工沸石的最佳摻量為0.3%(與混合料的比例),在馬歇爾擊實(shí)條件下,加入人工沸石的WMA成型溫度比HMA的成型溫度降低了20℃,在旋轉(zhuǎn)壓實(shí)的情況下兩者的溫度降低了接近30℃。
[Abstract]:The organic additives Sasobit and artificial zeolite were used to prepare the asphalt mixture. The East China Sea 70 # asphalt was used to mix the asphalt and AC-13 mineral aggregate was selected to mix the asphalt mixture. Through the visco-temperature curve and the volume index of the Marshall specimen, the optimum content of the two kinds of warm mixing agents are determined, and the Marshall specimen and the rotating compacted specimen are formed at different temperatures under the optimum content. To study the cooling effect of two kinds of warm-mixed asphalt mixture by observing the variation law of its voids. The results show that both kinds of warm mixing agents can reduce the viscosity of asphalt at high temperature, and its viscosity decreases with the increase of the content of warm mix agent. The optimum content of Sasobit is 3. (ratio of asphalt to asphalt, under Marshall compaction condition, The forming temperature of WMA added with Sasobit is 14 鈩，

本文編號(hào)：2015173