Assessing the Ageing Impact on Fatigue-Life of Asphalt Concrete

作     者：Saad Issa Sarsam 

作者机构：Sarsam and Associates Consult Bureau SACB.BaghdadIraq 

出 版 物：《Journal of Building Material Science》 (建筑材料科学（英文）)

年 卷 期：2020年第2卷第2期

页      面：9-15页

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Fatigue life Asphalt concrete Flexure strain Ageing Temperature Strain level 

摘      要：The fatigue-life of asphalt concrete is often related to environmental condition,loading condition,ageing,material composition and *** work investigates the influence of short and long term ageing of laboratory beam specimens,asphalt percent,and testing temperature on fatigue life of asphalt concrete wearing *** samples of(30 × 40 × 6)cm have been prepared,beam specimens of(40 × 5 × 6)cm were extracted from the asphalt concrete slab samples and tested for fatigue-life under the impact of three levels of micro strain(250,400,and[3]750)at(5,20,and 30)℃ before and after practicing long-term *** was observed that the fatigue-life decreased by(85 and 97)%,(87.5 and 97.4)%,(71.4 and 95.2)%after increasing the applied microstrain from(250 to 400 and 750)μƐfor control mixture and for mixtures subjected to shortand long-term ageing processes *** fatigue-life increased by(142.8 and 257.1)%,(34.4 and 57.8)%and(10 and 30)%when the asphalt content increased from(4.4 to 4.9 and 5.4)%for specimens practicing the applied microstrain of(250,400 and 750)μƐ*** can be concluded that the fatigue life increases by a range of(two to fifteen)folds when the testing temperature increases from(5 to 20 and 30)℃ respectively.