發(fā)布時間：2018-01-24 17:55

  本文關(guān)鍵詞： 道路工程 橡膠瀝青 正交試驗 評價指標 加工因素　出處：《公路交通科技》2017年02期 　論文類型：期刊論文

【摘要】：為提高橡膠瀝青的性能,依托河北廊滄高速公路建設(shè)工程,針對當?shù)貧夂蛱卣骷安牧闲誀?借助正交試驗優(yōu)選橡膠瀝青的9種正交組合,并研究了膠粉摻量、膠粉目數(shù)、瀝青型號對橡膠瀝青3大指標的規(guī)律性影響。此外,采用老化試驗和布氏黏度試驗,評價了拌和時間以及拌和溫度對橡膠瀝青老化前后性能的影響程度。研究結(jié)果表明:橡膠瀝青正交試驗各因素的顯著性順序為:膠粉摻量基質(zhì)瀝青型號膠粉目數(shù);拌和時間和拌和溫度對橡膠瀝青老化性能影響顯著,因此在制備橡膠瀝青的過程中需合理控制時間和溫度;選取90#、60目、膠粉含量為20%的橡膠瀝青,在190℃的環(huán)境下拌和60 min,能使橡膠瀝青達到最佳性能;建議橡膠瀝青的性能評價指標以5℃延度和180℃黏度為主,針入度和軟化點為輔。
[Abstract]:In order to improve the performance of rubber asphalt, based on the construction project of Hebei Langcang expressway, according to the local climate characteristics and material properties, 9 orthogonal combinations of rubber asphalt were selected by orthogonal test, and the content of rubber powder was studied. In addition, aging test and Brinell viscosity test were used. The effects of mixing time and mixing temperature on the properties of rubber asphalt before and after aging were evaluated. Rubber powder content matrix asphalt type rubber powder number; The effect of mixing time and mixing temperature on the aging performance of rubber asphalt is significant, so it is necessary to control the time and temperature reasonably in the process of preparing rubber asphalt. The rubber asphalt with 90 mesh and 20% rubber powder was mixed at 190 鈩，

本文編號：1460637