High and low temperature performance of warm-mixed flame retardant asphalt based on rheological property
1. College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu 210098， China; 2. Guangxi Transportation Science and Technology Group Co., Ltd., Nanning, Guangxi 530007, China; 3. China Design Group Co., Ltd., Nanjing, Jiangsu 210014, China
Abstract：To explore the rheological properties of warm-mixed flame retardant asphalt, warm agents (Sasobit), aluminum hydroxide and organic montmorillonite were added respectively into the 70# matrix asphalt and SBS modified asphalt to prepare two types of modified asphalt. The influence of flame retardant content on the high and low temperature performance of the warm-mixed flame retardant asphalt was analyzed by the dynamic shear rheometer test, bending beam rheometer test and multi-stress creep recovery test. The results show that with the increasing of flame retardant content, complex modulus, rutting factor， strain variation percent recovery and stiffness modulus value are increased gradually， while non-recoverable creep compliance and creep rate value are decreased. The flame retardant can improve the high temperature performance and impair the low temperature performance of the asphalt. Through comprehensive evaluation of high and low temperature rheological properties and economy, the optimal proportion of compound flame retardant is recommended to be 8%.
林钰1， 刘圣洁1， 黄慧2， 史文宇1， 李梦然3. 基于流变特性的温拌阻燃沥青的高、低温性能[J]. 江苏大学学报（自然科学版）, 2023, 44(4): 483-489.
LIN Yu1， LIU Shengjie1， HUANG Hui2， SHI Wenyu1， LI Mengran3. High and low temperature performance of warm-mixed flame retardant asphalt based on rheological property[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2023, 44(4): 483-489.
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2023, Vol. 44 
