کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6747905 | 1429555 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multi-parametric characterization of mode I fracture toughness of asphalt concrete: Influence of void and RA contents, binder and aggregate types
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study aims to evaluate the fracture toughness (KIc) in mode I cracking using semi-circular bending test (SCB). Experiment has been performed to investigate the influence of bitumen grade (using P15/25 and P50/70 bitumens), reclaimed asphalt (RA) content (using 0%, 20% and 40% RA contents) and temperature (using â20â¯Â°C, â5â¯Â°C, 10â¯Â°C test temperatures), through ANOVA. Additional investigations have been performed: (i) to evaluate the effect of the use of polymer modified bitumen (PMB), (ii) to evaluate the effect compactness using 5% and 8% air void contents, (iii) to evaluate the effect of aggregate type using siliceous-limestone and porphyry aggregates. The results show an important decrease in KIc when temperature increases from â5â¯Â°C to 10â¯Â°C and a slight decrease between â20â¯Â°C and â5â¯Â°C. The results also show that increasing RA content increases slightly the KIc. It was found from the ANOVA that the influent parameters can be ranked as follows: temperature, RA content and binder grade. The investigations show that PMB increases the KIc value than pure bitumens. Porphyry aggregates increase the KIc by about 16% than silica-limestone aggregates at low temperatures between â20â¯Â°C and â5â¯Â°C. However, this ranking is slightly inverted at 10â¯Â°C. In addition, KIc decreases by about 12% at 10â¯Â°C with an increase in air voids (by 5% to 8%). Void content effect is more significant at â5â¯Â°C and 10â¯Â°C, and negligible at â20â¯Â°C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pavement Research and Technology - Volume 11, Issue 3, May 2018, Pages 274-284
Journal: International Journal of Pavement Research and Technology - Volume 11, Issue 3, May 2018, Pages 274-284
نویسندگان
Saannibe Ciryle Somé, Montassar Abdhelack Fredj, Mai-Lan Nguyen, Arnaud Feeser, Alexandre Pavoine,