本文選題：瀝青路面 + 膠結(jié)料��； 參考：《中國礦業(yè)大學(xué)學(xué)報》2014年04期

【摘要】：基于實(shí)際工程選取10種SBS改性瀝青路面銑刨料,抽提回收得到舊瀝青膠結(jié)料,通過環(huán)球軟化點(diǎn)、布氏黏度、延度、針入度、動態(tài)剪切流變和簡支梁彎曲蠕變等試驗(yàn),對舊瀝青膠結(jié)料進(jìn)行了性狀分析與老化分級.結(jié)果表明:瀝青路面的使用年限是影響瀝青老化的主要因素,銑刨料結(jié)構(gòu)層瀝青類型及性質(zhì)影響舊料的老化試驗(yàn)結(jié)果;相對于軟化點(diǎn)、延度、蠕變勁度,135℃黏度、疲勞設(shè)計(jì)溫度、25℃針入度可更好地區(qū)分各類舊瀝青路面膠結(jié)料的老化程度;采用135℃黏度、25℃針入度2個指標(biāo)將舊瀝青路面膠結(jié)料劃分為6個等級,相對于現(xiàn)行規(guī)范采用單一針入度指標(biāo)分級更為合理.
[Abstract]:Based on the practical engineering, 10 kinds of SBS modified asphalt pavement milling and planing materials were selected, and the old asphalt binders were extracted and recovered. The tests of global softening point, Brinell viscosity, ductility, penetration, dynamic shear rheology and bending creep of simply supported beams were carried out. The property analysis and aging classification of old asphalt binder were carried out. The results show that the service life of asphalt pavement is the main factor affecting the aging of asphalt, the type and properties of asphalt in milling and planing structure layer affect the aging test results of old materials, and the viscosity of asphalt is 135 鈩，

本文編號：1811739